1 idtqs4a205 high-performance cmos analog four-channel spdt mux/demux industrial temperature range april 2014 2014 integrated device technology, inc. dsc-5551/4 c industrial temperature range features: ? low on resistance: r ds ( on ) = 5 ? fast transition time: t tran = 6ns ? wide bandwidth: 830mhz (-3db point) ? crosstalk: -115db at 50khz, -100db at 5mhz, -66db at 30mhz ? off-isolation: -90db at 50khz, -60db at 5mhz, -50db at 30mhz ? single 5v supply ? can be used as multiplexer or demultiplexer ? ttl-compatible control inputs ? ultra-low quiescent current: 3 a ? available in qsop package idt and the idt logo are registered trademarks of integrated device technology, inc. applications: ? high-speed video signal switching/routing ? hdtv-quality video signal routing ? audio signal switching/routing ? data acquisition ? ate systems ? telecomm routing ? switch between multiple video sources ? token ring transceivers ? high-speed networking functional block diagram idtqs4a205 quickswitch ? products high-performance cmos analog four-channel spdt mux/demux control logic i1d i0d i1c i0c s i1b i0b i1a i0a ya yb yc yd e description: the qs4a205 is a high-performance cmos analog four-channel spdt multiplexer/demultiplexer with individual enables. the low on- resistance of the qs4a205 allows inputs to be connected to outputs with low insertion loss and high bandwidth. ttl-compatible control circuitry with ?break-before-make? feature prevents contention. the qs4a205 with 830mhz bandwidth makes it ideal for high-perfor- mance video signal switching, audio signal switching, and telecomm routing applications. high performance and low power dissipation makes this device ideal for battery operated and remote instrumentation applications. the qs4a205 is offered in the qsop package and has several advan- tages over conventional packages such as pdip and soic including: ? reduced signal delays due to denser component packaging on circuit boards ? reduced system noise due to less pin inductance resulting in lower ground bounce the qs4a205 is characterized for operation at -40c to +85c.
2 industrial temperature range idtqs4a205 high-performance cmos analog four-channel spdt mux/demux pin configuration qsop top view symbol description max unit v term (2) supply voltage to ground ?0.5 to +7 v v term (3) dc switch voltage v s ?0.5 to +7 v ? analog input voltage ?0.5 to +7 v v term (3) dc input voltage v in ?0.5 to +7 v v ac ac input voltage (pulse width 20ns) ?3 v i out dc output current 120 ma p max maximum power dissipation 0.7 w t stg storage temperature ?65 to +150 c absolute maximum ratings (1) pin names i/o description ixa i/o demux port a ixb i/o demux port b ixc i/o demux port c ixd i/o demux port d e i enable input s i select input ya-yd i/o mux port a-d pin description notes: 1. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. v cc terminals. 3. all terminals except v cc . note: 1. h = high voltage level l = low voltage level x = don't care z = high-impedance enable select mux/demux ports e s ya yb yc yd function h x z z z z disable l l i0a i0b i0c i0d select 0 l h i1a i1b i1c i1d select 1 function table (1) 16 v cc 15 e 14 i0d 13 i1d 12 yd 11 i0c 9yc 10 i1c s1 i0a 2 i1a 3 ya 4 i0b 5 i1b 6 gnd 8 yb 7 symbol parameter (1) conditions typ. max. unit c mux (off) mux off e = v cc , v in = v out = 0v 5.6 ? pf capacitance c demux (off) demux off e = v cc , v in = v out = 0v 7.4 ? pf capacitance c mux (on) mux on e = 0v, v in = v out = 0v 12 ? pf capacitance c demux (on) demux on e = 0v, v in = v out = 0v 15 ? pf capacitance capacitance (t a = +25c, f = 1mhz, v in = 0v, v out = 0v) note: 1. as applicable to the device type.
3 idtqs4a205 high-performance cmos analog four-channel spdt mux/demux industrial temperature range dc electrical characteristics over operating range following conditions apply unless otherwise specified: industrial: t a = ?40c to +85c, v cc = 5v 5% symbol parameter test conditions min. typ. (1) max. unit analog switch v in analog signal range (2) ?0.5 1 vcc - 1 v r ds ( on ) drain-source on resistance (2,3) vcc = min., v in = 0v , i on = 30ma ? 5 7 vcc = min., v in = 2.4v , i on = 15ma ? 13 17 i c(off) channel off leakage current i n = vcc or 0v; y n = 0v or vcc; e = vcc ? 2 ? na i c(on) channel on leakage current i n = y n = 0v ? 2 ? na (each channel is turned on sequentially) digital control v ih input high voltage guaranteed logic high for control pins 2 ? ? v v il input low voltage guaranteed logic low for control pins ? ? 0.8 v dynamic characteristics t trans switching time of mux s to y r l = 1k , c l = 100pf 0.5 ? 6.6 ns t on( en ) enable turn-on time, e to y r l = 1k , c l = 100pf 0.5 ? 6 ns t off( en ) enable turn-off time, e to y r l = 1k , c l = 100pf 0.5 ? 6 ns t pd group delay (2,4) r l = 1k , c l = 100pf ? ? 250 ps f 3db -3db bandwidth v in = 1vp-p, r l = 75 ? 830 ? mhz off-isolation v in = 1vp-p, r l = 75 , f = 5mhz ? -60 ? db x talk crosstalk v in = 1vp-p, r l = 75 , f = 5mhz ? -100 ? db q ci charge injection ? 1.5 ? pc notes: 1. typical values are at v cc = 5.0v, t a = 25c. 2. max value is guaranteed but not production tested. 3. measured by voltage drop between a and c pins or b and d pins at indicated current through the switch. on resistance is dete rmined by the lower of the voltages on the two (a, c, or b, d) pins. 4. the bus switch contributes no group delay other than the rc delay of the on resistance of the switch and load capacitance. g roup delay of the bus switch, when used in a system, is determined by the driving circuit on the driving side of the switch and its interaction with the load on the dr iven side. power supply characteristics symbol parameter test conditions max. unit i ccq quiescent power v cc = max., v in = gnd or v cc , f = 0 3 a
4 industrial temperature range idtqs4a205 high-performance cmos analog four-channel spdt mux/demux typical characteristics notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | notes: 1. crosstalk = 20 log |v o /v s | 2. off-isolation = 20 log |v o /v s | note: 1. insertion loss = 20 log |v o /v s | off-isolation and crosstalk vs. frequency off-isolation and crosstalk vs. frequency off-isolation and crosstalk vs. frequency insertion loss vs. frequency 1k 10k 100k frequency (hz) ( d b ) 1m 10m 100m 1g crosstalk off-isolation 150 120 90 60 30 0 v cc = 5v r l = 75 60 50 40 30 20 10 0 v cc = 5v r l = 75 100m 200m 300m frequency (hz) ( d b ) 400m 500m 600m 700m crosstalk off-isolation 160 140 120 100 80 60 40 10k 20k 30k frequency (hz) ( d b ) 40k 50k 60k 70k crosstalk off-isolation v cc = 5v r l = 75 4 2 0 2 4 6 1k 10k 100k frequency (hz) ( d b ) 1m 10m 100m 1g r l = 1k r l = 75 v cc = 5v
5 idtqs4a205 high-performance cmos analog four-channel spdt mux/demux industrial temperature range typical characteristics (continued) insertion loss vs. frequency on-resistance vs. v in note: 1. insertion loss = 20 log |v o /v s | 16 14 12 10 8 0.0 0.5 1.0 1.5 2.0 2.5 3.0 6 4 v in (volts) r d s ( o n ) - d r a i n s o u r c e o n - r e s i s t a n c e ( ) v cc = 4.75v 18 r on link transition time test circuits 2 1 0 1 2 3 4 100m 200m 300m frequency (hz) ( d b ) 400m 500m 600m 700m 800m 900m r l = 1k r l = 75 v cc = 5v t trans t trans 3.0v 1.5v 0v 1.5v select input i0a i0b, i1b i0d, i1d yc ya 5v 5v 50 500 50pf 0v gnd qs4a205 e s switch output i1a i0c, i1c yb yd v out v in v cc
6 industrial temperature range idtqs4a205 high-performance cmos analog four-channel spdt mux/demux insertion loss note: 1. insertion loss = 20 log |v o /v s | crosstalk note: 1. crosstalk = 20 log |v o /v s | off-isolation note: 1. off-isolation = 20 log |v o /v s | enable switching time test circuits (continued) +5v vcc gnd qs4a205 e i0a s v s r s = 50 r l 75 y o y a +5v gnd qs4a205 e i0a ixa ixd s vcc v in r s = 50 r l 75 y o y a i0a i0b, i1b i0d, i1d yc ya 5v 5v 50 500 50pf 0v gnd qs4a205 e i1a i0c, i1c yb yd s 3.0v 1.5v 0v 0.3v 0.3v control input output output t off(en) t on(en) v in v cc v out +5v +5v gnd qs4a205 e ixa ixd s vcc v s r s = 50 r l 75 y o y a
7 idtqs4a205 high-performance cmos analog four-channel spdt mux/demux industrial temperature range ordering information qs xxxxx xx package device type x blank 8 tube or tray tape and reel quarter size outline package - qsop green qg 4a205 high performance cmos analog four-channel spdt mux/demux corporate headquarters for sales: for tech support: 6024 silver creek valley road 800-345-7015 or 408-284-8200 logichelp@idt.com san jose, ca 95138 fax: 408-284-2775 www.idt.com datasheet document history 04/13/2014 pg. 7 updated the ordering information by removing non green package version, the "idt" notation and adding tape and reel information.
|
