1 IDTQS4A101 high-performance cmos analog four-channel spst switch industrial temperature range february 2009 2000 integrated device technology, inc. dsc-5552/2 c industrial temperature range features: ? low on resistance: r ds ( on ) = 5 ? ? ? ? ? wide bandwidth: 1.4ghz (-3db point) crosstalk: 122db at 50khz, -80db at 5mhz, -65db at 30mhz off-isolation: -100db at 50khz, -75db at 5mhz, -45db at 30mhz single 5v supply bidirectional signal flow ttl-compatible control inputs ultra-low quiescent current: 3 a switch turn on time of 6.5ns available in qsop package the idt logo is a registered trademark of integrated device technology, inc. applications: high-speed video signal switching/routing audio signal switching/routing data acquisition ate systems telecomm routing token ring transceivers high-speed networking functional block diagram IDTQS4A101 quickswitch ? products high-performance cmos analog four-channel spst switch with individual enables description: the qs4a101 is a high-performance cmos analog four-channel spst switch with individual enables. this device provides a set of four high-speed cmos switches connecting inputs to outputs. the low on resistance of the qs4a101 allows inputs to be connected to outputs with low insertion loss and high bandwidth. the qs4a101, with 1.4ghz bandwidth, is ideal for high-performance video signal switching, audio signal switching, and telecomm routing applications. low power dissipation makes this device ideal for battery operated and remote instrumentation applications. the qs4a101 is offered in the qsop package which has several advantages over conventional packages such as pdip and soic, includ- ing: ? reduced signal delays due to denser component packaging on circuit boards reduced system noise due to less pin inductance the qs4a101 is characterized for operation at -40c to +85c. control logic a1 a2 a3 a4 b1 b2 b3 b4 e1 e2 e3 e4
2 industrial temperature range IDTQS4A101 high-performance cmos analog four-channel spst switch 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 a 1 -a 4 i/o port a b 1 -b 4 i/o port b e 1 - e 4 i port switch enable 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 . 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 nc e1 a1 b1 e2 a2 b2 gnd v cc e4 a4 b4 e3 a3 b3 nc note: 1. h = high voltage level l = low voltage level x = don't care e a b function l h h connect l l l connect h x x disconnect function table (1) power supply characteristics symbol parameter test conditions max. unit i cc supply current v cc = max., v in = gnd or v cc 3a
3 IDTQS4A101 high-performance cmos analog four-channel spst switch 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 a = vcc or 0v, b = 0v or vcc, e = vcc ? 1 ? na i c(on) channel on leakage current a = b = 0v ? 1 ? 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 on( e ) enable turn-on time r l = 1k ? , c l = 100pf 0.5 ? 6.5 ns e to a, b (see switching time) t off( e ) enable turn-off time r l = 1k ? , c l = 100pf 0.5 ? 6 ns e to a, b (see switching time) t pd group delay (2,4a) r l = 1k ? , c l = 100pf ? ? 250 ps f 3db -3db bandwidth v in = 0 to 1v, 1vp-p, r l = 75 ? ? 1.4 ? ghz off-isolation v in = 0 to 1v, 1vp-p, r l = 75 ? , f = 5.5mhz ? -80 ? db x talk crosstalk v in = 0 to 1v, 1vp-p, r l = 75 ? , f = 30mhz ? -75 ? db c (off) switch off capacitance e = vcc, v in = v out = 0v ? 5 ? pf c (on) switch on capacitance e = 0v, v in = v out = 0v ? 10 ? pf 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 at indicated current through the switch on resistance is determined by the low er of the voltages on the two (a, b) 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 t he driven side.
4 industrial temperature range IDTQS4A101 high-performance cmos analog four-channel spst switch 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 | 180 150 120 90 60 1k 10k 100k 1m 10m 100m 1g 10g 30 0 frequency (hz) ( d b ) crosstalk off-isolation v cc = 5v r l = 75 ? 60 50 40 30 20 10 0 v cc = 5v r l = 75 ? 500m frequency (hz) ( d b ) crosstalk 600m 700m 400m 300m 200m 100m off-isolation 160 140 120 100 80 50k 60 40 frequency (hz) ( d b ) 60k 70k 40k 30k 20k 10k crosstalk off-isolation v cc = 5v r l = 75 ? 2 1 0 1 2 3 4 1k 10k 100k 1m 10m 100m 1g 10g 5 6 frequency (hz) ( d b ) v cc = 5v r l = 75 ? 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
5 IDTQS4A101 high-performance cmos analog four-channel spst switch 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 2 1 0 1 2 3 600m frequency (hz) ( d b ) 700m 300m 400m 500m 100m 200m v cc = 5v r l = 75 switching time a1-a3 b1-b3 b4 gnd 5v v out 500 50 pf vcc 5v e1-e3 5v 50 v in qs4a101 control input output 3.0v 1.5v 0v t on(e) 0.3v t off(e) 0.3v output a4 3.0v 1.5v 0v control input e4 test circuits
6 industrial temperature range IDTQS4A101 high-performance cmos analog four-channel spst switch gnd e1 e2 e3 qs4a101 a4 e4 b4 v s 5v v cc 5v r l = 75 ? v out insertion loss notes: 1. insertion loss = 20 log |v o /v s | 2. all unused pins are grounded. crosstalk notes: 1. crosstalk = 20 log |v o /v s | 2. all unused pins are grounded. off-isolation note: 1. off-isolation = 20 log |v o /v s | test circuits (continued) gnd e2 e3 e4 qs4a101 a1 a2 a3 a4 e1 b1 v s 5v v cc 5v r l = 75 ? v out gnd e1 e2 e3 e4 qs4a101 a1 a2 a3 a4 b1 b2 b3 b4 v s 5v v cc 5v r l = 75 ? v out
7 IDTQS4A101 high-performance cmos analog four-channel spst switch industrial temperature range ordering information qs xxxxx xx package device type quarter size outline package qsop - green q qg 4a101 high performance cmos analog four-channel spst switch with individual enables 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
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