View MAX9517_2272732.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the MAX9517/max9524 are low-power video amplifiers with integrated reconstruction filters. specially suited for standard-definition video signals, such as composite and luma, these devices are ideal for a wide range of appli- cations such as cell phones and security/cctv cameras. video signals should be dc-coupled into the MAX9517 input and ac-coupled into the max9524 input. the MAX9517/max9524 have two single-pole, single- throw (spst) analog switches that can be used to route stereo audio, video, or digital signals. the reconstruc- tion filter typically has ?db passband flatness at 9mhz and 52db attenuation at 27mhz. the amplifiers have a gain of 2v/v, and the outputs can be dc-coupled to a load of 75 , which is equivalent to two video loads. the outputs can be ac-coupled to a load of 150 , which is equivalent to one video load. the MAX9517/max9524 operate from a 2.7v to 3.6v single supply and are specified over the -40? to +125? automotive temperature range. the MAX9517/ max9524 are available in a small 12-pin tqfn (3mm x 3mm) package. features ? integrated reconstruction filter for standard- definition video ? 9mhz, ?db passband ? 52db attenuation at 27mhz ? dual spst switches ? fixed gain of 2v/v ? dc- or ac-coupled output ? 2.7v to 3.6v single-supply operation MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ________________________________________________________________ maxim integrated products 1 19-0867; rev 0; 9/07 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. evaluation kit available ordering information part input type pin-package pkg code top mark MAX9517 atc+ dc bias 12 tqfn-ep* t1233+4 abf max9524 atc+ ac clamp 12 tqfn-ep* t1233+4 abe note: all devices are specified over the -40? to +125? operating temperature range. + denotes a lead-free package. * ep = exposed pad. pin configuration appears at end of data sheet. 0 to 50mv 300mv to 400mv vidin lpf buffer no1 com1 no2 com2 in1 in2 shdn vidout a v = 2v/v MAX9517 unknown bias 300mv vidin lpf no1 com1 no2 com2 in1 in2 shdn vidout a v = 2v/v max9524 clamp functional diagrams applications security/cctv cameras mobile phones/cell phones digital still cameras (dsc) camcorders (dvc) portable media players (pmp)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v dd = shdn = 3.3v, gnd = 0v, no load, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v dd to gnd ..............................................................-0.3v to +4v vidin to gnd ...........................................................-0.3v to +4v com_, no_ to gnd ...................................-0.3v to (v dd + 0.3v) shdn , in_ to gnd ...................................................-0.3v to +4v vidout short-circuit duration to v dd , gnd .............continuous continuous input current vidin, in_, shdn ..........................................................?0ma com_, no_ .................................................................?00ma peak current com_, no_ (pulsed at 1ms, 10% duty cycle) ............?00ma continuous power dissipation (t a = +70?) 12-pin tqfn (derate 14.7mw/? above +70?) ........1177mw operating temperature range .........................-40? to +125? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering 10s) ..................................+300? parameter symbol conditions min typ max units supply voltage range v dd guaranteed by psrr 2.7 3.6 v MAX9517 3.5 7 supply current i dd max9524 4.25 8 ma shutdown supply current i shdn v shdn = gnd 1 a video dc buffer inputs (MAX9517) v dd = 2.7v 0 1.05 input voltage range v in guaranteed by output- voltage swing v dd = 3v 0 1.2 v input current i in v in = 0v 3.5 10 ? input resistance r in 300 k v dd = 2.7v, 0 v in 1.05v 1.95 2.00 2.04 dc voltage gain a v r l = 150 to gnd v dd = 3v, 0 v in 1.2v 1.95 2.00 2.04 v/v output level measured at v out , vidin = 0.1? to gnd, r l = 150 to gnd 200 300 410 mv measured at output, v dd = 2.7v, 0 v in 1.05v, r l = 150 to -0.2v 2.1 measured at output, v dd = 2.7v, 0 v in 1.05v, r l = 150 to v dd /2 2.1 measured at output, v dd = 3v, 0 v in 1.2v, r l = 150 to -0.2v 2.4 measured at output, v dd = 3v, 0 v in 1.2v, r l = 150 to v dd /2 2.4 output-voltage swing measured at output, v dd = 3.135v, 0 v in 1.05v, r l = 75 to -0.2v 2.1 v p-p sync-tip clamp input (max9524) sync-tip clamp level v clp sync-tip clamp 0.23 0.39 v v dd = 2.7v to 3.6v 1.05 input voltage range v dd = 3v to 3.6v 1.2 v p-p sync crush sync-tip clamp, percentage reduction in sync pulse (0.3v p-p ), guaranteed by input clamping current measurement 2%
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches _______________________________________________________________________________________ 3 parameter symbol conditions min typ max units input clamping current sync-tip clamp 1 2 ? maximum input source resistance 300 v dd = 2.7v, 0 v in 1.05v 1.95 2.00 2.04 dc voltage gain (note 2) a v r l = 150 to gnd v dd = 3v, 0 v in 1.2v 1.95 2.00 2.04 v/v output level measured at v out , vidin = 0.1? to gnd, r l = 150 to gnd 0.21 0.30 0.39 v measured at output, v dd = 2.7v, v in = v clp to (v clp +1.05v), r l = 150 to -0.2v 2.1 measured at output, v dd = 2.7v, v in = v clp to (v clp +1.05v), r l = 150 to v dd /2 2.1 measured at output, v dd = 3v, v in = v clp to (v clp +1.2v), r l = 150 to -0.2v 2.4 measured at output, v dd = 3v, v in = v clp to (v clp +1.2v), r l = 150 to v dd /2 2.4 output-voltage swing measured at output, v dd = 3.135v, v in = v clp to (v clp +1.05v), r l = 75 to -0.2v 2.1 v p-p short to gnd (sourcing) 140 output short-circuit current short to v cc (sinking) 70 ma output resistance r out v out = 1.5v, -10ma i load +10ma 0.2 output leakage current shdn = gnd 1 a power-supply rejection ratio 2.7v v dd 3.6v 48 db ?db passband flatness 9 mhz f = 5.5mhz +0.15 f = 10mhz -3 standard-definition reconstruction filter v vidout = 2v p-p , reference frequency is 100khz f = 27mhz -52 db differential gain dg 5-step modulated staircase of 129mv step size and 286mv p-p subcarrier amplitude; f = 4.43mhz 1% differential phase dp 5-step modulated staircase of 129mv step size and 286mv p-p subcarrier amplitude; f = 4.43mhz 0.4 degrees 2t pulse-to-bar k rating bar time is 18?, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2t = 200ns 0.6 k% 2t pulse response 2t = 200ns 0.2 k% 2t bar response bar time is 18?, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2t = 200ns 0.2 k% electrical characteristics (continued) (v dd = shdn = 3.3v, gnd = 0v, no load, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 4 _______________________________________________________________________________________ parameter symbol conditions min typ max units nonlinearity 5-step staircase, f = 4.43mhz 0.5 % group delay distortion 100khz f 5.5mhz, outputs are 2v p-p 12 ns peak signal to rms noise 100khz f 5.5mhz 71 db power-supply rejection ratio f = 1mhz, 100mv p-p 29 db output impedance f = 5.5mhz 4.8 all-hostile crosstalk f = 4.43mhz -64 db analog switches analog signal range v com_ , v no_ 0v dd v on-resistance (note 3) r on v dd = 2.7v, i com_ = 10ma, v no_ = 1.5v 1.7 5.0 on-resistance match between channels (notes 3, 4) r on v dd = 2.7v, i com_ = 10ma, v no_ = 1.5v 0.4 on-resistance flatness (note 5) r flat ( on ) v dd = 2.7v, i com_ = 10ma, v no_ = 1.0v, 1.5v, 2.0v 0.5 1.5 no_ off-leakage current (note 3) i no_ ( off ) v dd = 3.6v, v com_ = 0.3v, 3.3v; v no_ = 3.3v, 0.3v -2 +2 na com_ on-leakage current (note 3) i com_ ( on ) v dd = 3.6v, v com_ = 0.3v, 3.3v; v no_ = 0.3v, 3.3v, or unconnected -2.5 +2.5 na turn-on time t on v no_ = 1.5v; r l = 300 , c l = 35pf, v ih = 1.5v, v il = 0v 100 ns turn-off time t off v no_ = 1.5v; r l = 300 , c l = 35pf, v ih = 1.5v, v il = 0v 100 ns skew (note 3) t skew r s = 39 , c l = 50pf 2 ns charge injection q v gen = 1.5v, r gen = 0 , c l = 1nf 10 pc f = 10mhz; v no_ = 1v p-p ; r l = 50 , c l = 5pf -55 off-isolation v iso f = 1m h z; v n o_ = 1v p - p ; r l = 50 , c l = 5p f -80 db on-channel -3db bandwidth bw signal = 0dbm, r l = 50 , c l = 5pf 300 mhz total harmonic distortion thd v com_ = 2v p-p , r l = 600 0.03 % no_ off-capacitance c no_ ( off ) f = 1mhz 20 pf switch on-capacitance c (on) f = 1mhz 50 pf f = 10mhz; v no_ = 1v p-p , r l = 50 , c l = 5pf -80 switch-to-switch v ct f = 1mhz; v no_ = 1v p-p , r l = 50 , c l = 5pf -110 db f = 10mhz; v no_ = 1v p-p -55 no_-to-vidout video circuit is on, switches are open f = 1mhz; v no_ = 1v p-p -80 db electrical characteristics (continued) (v dd = shdn = 3.3v, gnd = 0v, no load, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches _______________________________________________________________________________________ 5 electrical characteristics (continued) (v dd = shdn = 3.3v, gnd = 0v, no load, t a = t min to t max , unless otherwise noted. typical values are at t a = +25?.) (note 1) parameter symbol conditions min typ max units crosstalk vidout-to-no_ video circuit is on, f = 20khz, vidout = 2v p-p , r l = 50 , c l = 5pf 90 db vidin-to-com video circuit is shutdown, f = 20khz, 0.25v p-p at vidin, r l = 600 100 db vidout-to-com video circuit is on, f = 20khz, vidout = 2v p-p , r l = 50 , c l = 5pf 90 db logic signal (in1 and in2) logic-low threshold v il 0.5 v logic-high threshold v ih 1.4 v logic-input current i in 10 ? logic signal ( shdn ) logic-low threshold v il 0.3 x v dd v logic-high threshold v ih 0.7 x v dd v logic-input current i in 10 ? note 1: all devices are 100% production tested at t a = +25?. specifications over temperature limits are guaranteed by design. note 2: voltage gain (a v ) is a two-point measurement in which the output-voltage swing is divided by the input-voltage swing. note 3: guaranteed by design. note 4: r on = r on(max) - r on(min) . note 5: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. small-signal gain vs. frequency MAX9517/24 toc01 frequency (hz) gain (db) 10m 1m -70 -60 -50 -40 -30 -20 -10 0 10 -80 100k 100m v out = 100mv p-p small-signal gain flatness vs. frequency MAX9517/24 toc02 frequency (hz) gain (db) 10m -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 -4.0 1m 100m v out = 100mv p-p large-signal gain vs. frequency MAX9517/24 toc03 frequency (hz) gain (db) 10m 1m -60 -50 -40 -30 -20 -10 0 10 -70 100k 100m v out = 2v p-p typical operating characteristics (v dd = shdn = 3.3v. video outputs have r l = 150 connected to gnd. t a = +25?, unless otherwise noted.)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 6 _______________________________________________________________________________________ typical operating characteristics (continued) (v dd = shdn = 3.3v. video outputs have r l = 150 connected to gnd. t a = +25?, unless otherwise noted.) large-signal gain flatness vs. frequency MAX9517/24 toc04 frequency (hz) gain flatness (db) 10m -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 -4.0 1m 100m v out = 2v p-p group delay vs. frequency MAX9517/24 toc05 frequency (hz) group delay (ns) 10m 1m 20 40 60 80 100 120 0 100k 100m v out = 2v p-p power-supply rejection ratio vs. frequency MAX9517/24 toc06 frequency (hz) psrr (db) 10m 1m 100k -70 -60 -50 -40 -30 -20 -10 0 -80 10k 100m quiescent supply current vs. temperature MAX9517/24 toc07 temperature ( c) quiescent supply current (ma) 100 75 25 50 0 -25 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 2.0 -50 125 voltage gain vs. temperature MAX9517/24 toc08 temperature ( c) voltage gain (v/v) 100 75 25 50 0 -25 1.96 1.97 1.98 1.99 2.00 2.01 2.02 2.03 2.04 1.95 -50 125 -0.5 0.5 0 1.5 1.0 3.0 2.5 2.0 3.5 -0.3 0.3 0 0.6 0.9 1.2 1.5 1.8 output voltage vs. input voltage (MAX9517) MAX9517/24 toc09 input voltage (v) output voltage (v) differential gain and phase MAX9517/24 toc10 differential phase (deg) 13 245 6 7 13 245 6 7 0.6 0.8 0.4 0.2 0 -0.2 -0.4 differential gain (%) 0 0.1 -0.1 -0.2 -0.3 -0.4 f = 4.43mhz f = 4.43mhz 100ns/div 2t response vidin 200mv/div vidout 400mv/div MAX9517/24 toc11
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches _______________________________________________________________________________________ 7 10 s/div pal color bars vidin 500mv/div vidout 1v/div MAX9517/24 toc15 2ms/div field square-wave response vidin 500mv/div vidout 1v/div MAX9517/24 toc16 10 s/div ntc-7 video test signal vidin 500mv/div vidout 1v/div MAX9517/24 toc13 10 s/div pal multiburst response vidin 500mv/div vidout 1v/div MAX9517/24 toc14 switch input-to-input crosstalk vs. frequency MAX9517/24 toc17 frequency (hz) gain (db) 10m 1m -100 -80 -60 -40 -20 0 -120 100k 100m 400ns/div 12.5t response vidin 200mv/div vidout 400mv/div MAX9517/24 toc12 typical operating characteristics (continued) (v dd = shdn = 3.3v. video outputs have r l = 150 connected to gnd. t a = +25?, unless otherwise noted.) switch output-to-output crosstalk vs. frequency MAX9517/24 toc18 frequency (hz) gain (db) 10m 1m -100 -80 -60 -40 -20 0 -120 100k 100m output impedance vs. frequency MAX9517/24 toc19 frequency (hz) output impedance ( ) 1m 0.1 1 10 100 0.01 100k 10m
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 8 _______________________________________________________________________________________ 8 _______________________________________________________________________________________ pin description pin name function 1 n.c. no connection. not internally connected. 2 com1 analog switch 1 common terminal 3 com2 analog switch 2 common terminal 4 vidout video output 5 gnd ground 6 vidin video input 7 no2 analog switch 2 normally open terminal 8 no1 analog switch 1 normally open terminal 9 shdn active-low shutdown input. connect to gnd to place device in shutdown. 10 in1 analog switch 1 digital control input 11 in2 analog switch 2 digital control input 12 v dd positive power supply. bypass to gnd with a 0.1? capacitor. ep exposed paddle. connect ep to gnd. ep is also internally connected to gnd. typical operating characteristics (continued) (v dd = shdn = 3.3v. video outputs have r l = 150 connected to gnd. t a = +25?, unless otherwise noted.) MAX9517 disable response MAX9517/24 toc22 10ns/div output 1v/div shdn 1v/div v in = 1v max9524 disable response MAX9517/24 toc23 10ns/div output 250mv/div shdn 1v/div v in = 0.1 f to gnd MAX9517 enable response MAX9517/24 toc20 4ms/div output 1v/div shdn 1v/div v in = 1v max9524 enable response MAX9517/24 toc21 4ms/div output 250mv/div shdn 1v/div v in = 0.1 f to gnd
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches _______________________________________________________________________________________ 9 detailed description the MAX9517/max9524 consist of a lowpass filter and an output amplifier capable of driving a standard 150 video load to ground. the MAX9517 has an input buffer and the max9524 has an input sync-tip clamp. the MAX9517/max9524 both have two spst analog switches that can be used to route audio, video, or digi- tal signals. the output amplifiers provide a fixed gain of 2v/v. the MAX9517/max9524 filter and amplify the video dac output. external video signals, in which the dc bias is usually not known, can be ac-coupled to the max9524. input with dc buffer (MAX9517) the input of the MAX9517 can be directly connected to the video source if the signal is approximately between ground and 1v. this specification is commonly found at the output of most video dacs. dc-coupling requires that the input signals are ground referenced so that the sync tip of composite or luma signals is within 50mv of ground. input with sync-tip clamp (max9524) when the bias of the incoming video signal is either unknown or not between ground and 1v (such as an external video source), use the max9524 to connect the video source through a 0.1? capacitor. the vidin input of the max9524 can only handle sig- nals with a sync pulse, such as composite video and luma. an internal sync-tip clamp sets the internal dc level of the video signal. video filter the filter passband (?db) is typically 9mhz to make the device suitable for standard-definition video signals from all sources (including broadcast video and dvd). broadcast video signals are channel limited: ntsc sig- nals have 4.2mhz bandwidth, and pal signals have 5mhz bandwidth. video signals from a dvd player, however, are not channel limited; therefore, the band- width of dvd video signals can approach the nyquist limit of 6.75mhz (recommendation itu-r bt.601-5 specifies 13.5mhz as the sampling rate for standard- definition video). therefore, the maximum bandwidth of the signal is 6.75mhz. to ease the filtering require- ments, most modern video systems oversample by two times, clocking the video current dac at 27mhz. outputs the video output amplifiers can both source and sink load current, allowing output loads to be dc- or ac- coupled. the amplifier output stage needs around 300mv of headroom from either supply rail. the parts have an internal level shift circuit that positions the sync tip at approximately 300mv at the output. if the supply voltage is greater than 3.135v (5% below a 3.3v supply), each amplifier can drive two dc-cou- pled video loads to ground. if the supply is less than 3.135v, each amplifier can drive only one dc-coupled or ac-coupled video load. shutdown the MAX9517/max9524 draw less than 1? supply current when shdn is low. in shutdown, the amplifier output becomes high impedance. applications information reducing power consumption in the video dacs the MAX9517/max9524 have high-impedance input buffers that can work with source resistances as high as 300 . to reduce power dissipation in the video dacs, the dac output resistor can be scaled up in value. the reference resistor that sets the reference current inside the video dacs must also be similarly scaled up. for instance, if the output resistor is 37.5 , the dac must source 26.7ma when the output is 1v. if the output resistor is increased to 300 , the dac only needs to source 3.33ma when the output is 1v. there is parasitic capacitance from the dac output to ground. that capacitance in parallel with the dac out- put resistor forms a pole that can potentially roll off the frequency response of the video signal. for example, 300 in parallel with 50pf creates a pole at 10.6mhz. to minimize this capacitance, reduce the area of the signal trace attached to the dac output as much as possible, and place the MAX9517/max9524 as close as possible to the video dac outputs. _______________________________________________________________________________________ 9 in_ switch state 0 off 1on table 1. logic for analog switches spst analog switches
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 10 ______________________________________________________________________________________ ac-coupling the outputs the outputs can be ac-coupled because the output stage can source and sink current as shown in figure 1. coupling capacitors should be 220? or greater to keep the highpass filter formed by the 150 equivalent resis- tance of the video transmission line to a corner frequen- cy of 4.8hz or below. the frame rate of pal systems is 25hz, and the frame rate of ntsc systems is 30hz. the corner frequency should be well below the frame rate. changing between video output and microphone input on a single connector a single pole on a mobile phone jack can be used for transmitting a video signal to a television or receiving the signal from the microphone of a headset. figure 2 shows how the MAX9517 can transmit a video signal. figure 3 shows how the MAX9517 can receive and pass on the signal from a microphone. switching between video and digital signals the dual spst analog switches and the high-imped- ance output of the video amplifier enable video trans- mission, digital transmission, and digital reception all on a single pole of a connector. figures 4, 5, and 6 show the different configurations of the MAX9517. selecting between two video sources the analog switches can multiplex between two video sources. for example, a mobile phone might have an application processor with an integrated video encoder and a mobile graphics processor with an integrated video encoder, each creating a composite video signal that is between 0 and 1v. figure 7 shows this application in which the MAX9517 chooses between two internal video sources. the two analog switches can be used as a 2:1 multiplexer to select which video dac output is actually filtered, amplified, and then driven out to the connector. close switch 1 to select the video from the application processor. close switch 2 to select the video from the mobile graphics processor. figure 8 shows the application in which the max9524 chooses between two external video sources with unknown dc bias. y/c mixer with chroma mute if the video application processor has two current out- put digital-to-analog converters (dacs) for luma (y) and chroma (c), respectively, then the signals can be mixed together to create a composite video signal by summing the currents into a single resistor, as shown in figure 9. the composite video signal should be ac- coupled into the max9524 because the composite video signal has a positive dc level shift. the sync-tip clamp of the max9524 will re-establish the dc bias level of the signal inside the chip. the chroma current is connected to essentially a sin- gle-pole, double-throw (spdt) switch. in one position, the switch routes the chroma current into the resistor. in the other position, the switch routes the chroma current into ground. for the y/c mixer to work properly, the chroma current must be routed through analog switch 1 into the resistor. if the chroma signal needs to be muted, then the chroma current is shunted to ground through analog switch 2. analog switch 1 stays open. see figure 10. no1 com1 no2 com2 in1 in2 microcontroller dac cvbs 75 cvbs gnd +3.3v +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 220 f vidout figure 1. ac-coupled outputs
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 11 no1 com1 no2 com2 in1 in2 dac cvbs 75 to jack gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 vidout +3.3v baseband ic mic bias v cc v cc off mic amp off figure 2. video output configuration no1 com1 no2 com2 in1 in2 dac cvbs 75 to jack gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 vidout baseband ic mic bias v cc v cc mic amp off off off off figure 3. microphone input configuration
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 12 ______________________________________________________________________________________ no1 com1 no2 com2 in1 in2 dac cvbs 75 to jack gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 vidout +3.3v baseband ic v cc v cc off off figure 4. video output configuration no1 com1 no2 com2 in1 in2 dac cvbs 75 to jack gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 vidout baseband ic v cc v cc off off off off off figure 5. digital output configuration
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 13 no1 com1 no2 com2 in1 in2 dac cvbs 75 to jack gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 vidout baseband ic v cc v cc off off off off off figure 6. digital input configuration no1 com1 no2 com2 in1 in2 lpf buffer a v = 2v/v vidin shdn v dd gnd +3.3v vidout dac application processor dac mobile gpu 75 MAX9517 0.1 f sw1 sw2 figure 7. selecting between two internal video sources
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 14 ______________________________________________________________________________________ no1 com1 no2 com2 in1 in2 75 75 75 cvbs_out sw_control cvbs_in1 cvbs_in2 gnd +3.3v shdn vidin 6db v dd 0.1 f max9524 vidout lpf clamp 0.1 f 0.1 f figure 8. selecting between two external video sources no1 com1 no2 com2 in1 in2 75 cvbs gnd +3.3v shdn vidin 6db v dd 0.1 f max9524 vidout lpf clamp 0.1 f dac c gpio 2 gpio 1 dac y application processor figure 9. luma and chroma mixer circuit (chroma current routed into resistor)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 15 no1 com1 no2 com2 in1 in2 75 luma gnd +3.3v shdn vidin 6db v dd 0.1 f max9524 vidout lpf clamp 0.1 f dac c gpio 2 gpio 1 dac y application processor figure 10. luma and chroma mixer circuit with chroma muted. chroma current is shunted into ground through analog switch 2.
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 16 ______________________________________________________________________________________ t r < 5ns t f < 5ns 50% v il logic input r l com gnd in_ c l includes fixture and stray capacitance. v out = v n_ ( r l ) r l + r on v no v ih t off 0v 0.9 x v 0ut 0.9 x v out t on v out switch output logic input v dd c l v dd v out MAX9517 max9524 figure 12. switching time switch test circuits/timing diagrams lpf a v = 2v/v clamp video decoder shutdown circuit shdn v dd vidin 0.1 f 75 in vidout 75 75 max9524 figure 11. max9524 is used as an anti-alias filter with buffer (switches can route other signals) anti-alias filter the max9524 can also provide anti-alias filtering with buffer before an analog-to-digital converter (adc), which would be present in an ntsc/pal video decoder, for example. figure 11 shows an example application circuit for max9524. an external composite video signal is applied to in, which is terminated with 75 to ground. the signal is ac-coupled to vidin because the dc level of an external video signal is usu- ally not well specified. power-supply bypassing and ground the MAX9517/max9524 operate from a single-supply voltage down to 2.7v, allowing for low-power operation. bypass v dd to gnd with a 0.1? capacitor. place all external components as close as possible to the device.
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 17 c l out+ r s r s MAX9517 max9524 no1 c l out- in+ in- no2 com2 com1 0v logic input 0v to v dd v dd v in+ 0v v dd v in- 0v v dd v out+ 0v v dd v out- 50% 50% 50% t skew 50% 90% 10% t infall 90% 10% t inrise 90% 10% t outfall 90% 10% t outrise v dd figure 13. output signal skew switch test circuits/timing diagrams (continued)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 18 ______________________________________________________________________________________ v gen gnd c l v out v dd v out v out q = ( v out )(c l ) on in off off v dd r gen in_ MAX9517 max9524 0v to v dd no com_ + figure 14. charge injection v dd gnd v dd com_ no_ measurements are standardized against shorts at ic terminals. off-isolation is measured between com_ and off no_ terminal on each switch. on-loss is measured between com_ and on no_ terminal on each switch. signal direction through switch is reversed; worst values are recorded. in_ 10nf v in v out network analyzer 50 50 50 50 meas ref 0v or v dd MAX9517 max9524 off-isolation = 20log(v out /v in ) on-loss = 20log(v out /v in ) crosstalk = 20log(v out /v in ) figure 15. on-loss, off-isolation, and crosstalk gnd 0v or v dd no_ com_ MAX9517 max9524 v dd capacitance analyzer in 10nf f = 1mhz v dd figure 16. channel off-/on-capacitance switch test circuits/timing diagrams (continued)
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 19 no1 com1 no2 com2 in1 in2 microcontroller dac cvbs 75 cvbs gnd +3.3v application processor shdn vidin lpf buffer a v = 2v/v v dd 0.1 f MAX9517 typical operating circuits no1 com1 no2 com2 in1 in2 microcontroller dac cvbs 75 cvbs gnd +3.3v application processor shdn vidin lpf a v = 2v/v v dd 0.1 f max9524 clamp vidout 0.1 f v dd
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches 20 ______________________________________________________________________________________ 12 11 10 4 5 com1 com2 6 n.c. no1 no2 shdn 12 in2 3 987 v dd vidin gnd vidout MAX9517 max9524 in1 thin qfn (3mm x 3mm) top view + ep* *ep = exposed paddle pin configuration chip information process: bicmos
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches ______________________________________________________________________________________ 21 package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) 12x16l qfn thin.eps 0.10 c 0.08 c 0.10 m c a b d d/2 e/2 e a1 a2 a e2 e2/2 l k e (nd - 1) x e (ne - 1) x e d2 d2/2 b l e l c l e c l l c l c package outline 21-0136 2 1 i 8, 12, 16l thin qfn, 3x3x0.8mm marking aaaa
MAX9517/max9524 standard-definition video filter amplifiers with dual spst switches maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 22 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) exposed pad variations codes pkg. t1233-1 min. 0.95 nom. 1.10 d2 nom. 1.10 max. 1.25 min. 0.95 max. 1.25 e2 12 n k a2 0.25 ne a1 nd 0 0.20 ref - - 3 0.02 3 0.05 l e e 0.45 2.90 b d a 0.20 2.90 0.70 0.50 bsc. 0.55 3.00 0.65 3.10 0.25 3.00 0.75 0.30 3.10 0.80 16 0.20 ref 0.25 - 0 4 0.02 4 - 0.05 0.50 bsc. 0.30 2.90 0.40 3.00 0.20 2.90 0.70 0.25 3.00 0.75 3.10 0.50 0.80 3.10 0.30 pkg ref. min. 12l 3x3 nom. max. nom. 16l 3x3 min. max. 0.35 x 45 pin id jedec weed-1 t1233- 3 1.10 1.25 0.95 1.10 0.35 x 45 1.25 weed-1 0.95 t1633f-3 0.65 t1633-4 0.95 0.80 0.95 0.65 0.80 1.10 1.25 0.95 1.10 0.225 x 45 0.95 weed-2 0.35 x 45 1.25 weed-2 t1633-2 0.95 1.10 1.25 0.95 1.10 0.35 x 45 1.25 weed-2 package outline 21-0136 2 2 i 8, 12, 16l thin qfn, 3x3x0.8mm weed-1 1.25 1.10 0.95 0.35 x 45 1.25 1.10 0.95 t1233-4 t1633fh-3 0.65 0.80 0.95 0.225 x 45 0.65 0.80 0.95 weed-2 notes: 1. dimensioning & tolerancing conform to asme y14.5m-1994. 2. all dimensions are in millimeters. angles are in degrees. 3. n is the total number of terminals. 4. the terminal #1 identifier and terminal numbering convention shall conform to jesd 95-1 spp-012. details of terminal #1 identifier are optional, but must be located within the zone indicated. the terminal #1 identifier may be either a mold or marked feature. 5. dimension b applies to metallized terminal and is measured between 0.20 mm and 0.25 mm from terminal tip. 6. nd and ne refer to the number of terminals on each d and e side respectively. 7. depopulation is possible in a symmetrical fashion. 8. coplanarity applies to the exposed heat sink slug as well as the terminals. 9. drawing conforms to jedec mo220 revision c. 10. marking is for package orientation reference only. 11. number of leads shown are for reference only. 12. warpage not to exceed 0.10mm. 0.25 0.30 0.35 2 0.25 0 0.20 ref - - 0.02 0.05 0.35 8 2 0.55 0.75 2.90 2.90 3.00 3.10 0.65 bsc. 3.00 3.10 8l 3x3 min. 0.70 0.75 0.80 nom. m ax. tq833-1 1.25 0.25 0.70 0.35 x 45 weec 1.25 0.70 0.25 t1633-5 0.95 1.10 1.25 0.35 x 45 weed-2 0.95 1.10 1.25

▲Up To Search▲

Price & Availability of MAX9517

	To Download MAX9517 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .