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IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH WITH INDIVIDUAL ENABLES
FEATURES:
* * * * * * * * * * Low ON resistance: rDS(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: 3A Switch turn on time of 6.5ns Available in QSOP package
IDTQS4A101
DESCRIPTION:
APPLICATIONS:
* * * * * * *
High-speed video signal switching/routing Audio signal switching/routing Data acquisition ATE systems Telecomm routing Token Ring transceivers High-speed networking
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, including: * 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.
FUNCTIONAL BLOCK DIAGRAM
A1 A2 A3 A4
B1 B2 B3 B4
E1 E2 E3 E4
CONTROL L O G IC
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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c 2000 Integrated Device Technology, Inc.
AUGUST 2000
DSC-5552/1
IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) Description Supply Voltage to Ground DC Switch Voltage VS Analog Input Voltage DC Input Voltage VIN AC Input Voltage (pulse width 20ns) DC Output Current Maximum Power Dissipation Storage Temperature Max -0.5 to +7 -0.5 to +7 -0.5 to +7 -0.5 to +7 -3 120 0.7 -65 to +150 Unit V V V V V mA W C VTERM(3) -- VTERM(3) VAC IOUT PMAX TSTG
NC E1 A1 B1 E2 A2 B2 GND
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
V CC E4 A4 B4 E3 A3 B3 NC
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. VCC terminals. 3. All terminals except VCC .
QSOP TOP VIEW
PIN DESCRIPTION
Pin Names A1 -A4 B1 -B4 E1 -E4 I/O I/O I/O I Port A Port B Port Switch Enable Description
FUNCTION TABLE(1)
E L L H A H L X B H L X Function Connect Connect Disconnect
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
POWER SUPPLY CHARACTERISTICS
Symbol ICC Parameter Supply Current Test Conditions VCC = Max., VIN = GND or VCC Max. 3 Unit A
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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: TA = -40C to +85C, VCC = 5V 5%
Symbol Analog Switch VIN rDS(ON) IC(OFF) IC(ON) Analog Signal Range(2) Drain-source ON resistance(2,3) Channel Off Leakage Current Channel On Leakage Current Vcc = Min., VIN = 0V, ION = 30mA Vcc = Min., VIN = 2.4V, ION = 15mA A = Vcc or 0V, B = 0V or Vcc, E = Vcc A = B = 0V (each channel is turned on sequentially) Digital Control VIH VIL tON(E) tOFF(E) tPD f3dB XTALK C(OFF) C(ON) QCI Input HIGH Voltage Input LOW Voltage Enable Turn-On Time E to A, B Enable Turn-Off Time E to A, B Group Delay(2,4a) -3dB Bandwidth Off-isolation Crosstalk Switch Off Capacitance Switch On Capacitance Charge Injection Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins RL = 1K, CL = 100pF (See figure 9) RL = 1K, CL = 100pF (See figure 9) RL = 1K, CL = 100pF VIN = 0 to 1V, 1Vp-p, RL = 75 VIN = 0 to 1V, 1Vp-p, RL = 75, f = 5.5MHz VIN = 0 to 1V, 1Vp-p, RL = 75, f = 30MHz E = Vcc, VIN = VOUT = 0V E = 0V, VIN = VOUT = 0V -- -- -- -- -- -- -- -- 1.4 -80 -75 5 10 1.5 250 -- -- -- -- -- -- ps GHz dB dB pF pF pC 0.5 -- 6 ns 2 -- 0.5 -- -- -- -- 0.8 6.5 V V ns -0.5 -- -- -- -- 1 5 13 1 1 Vcc - 1 7 17 -- -- nA nA V Parameter Test Conditions Min. Typ.(1) Max. Unit
Dynamic Characteristics
NOTES: 1. Typical values are at VCC = 5.0V, TA = 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 lower 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. Group 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 driven side.
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IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS
180 VCC = 5V RL = 75 150
60 VCC = 5V RL = 75 50
120
(dB )
40
(dB)
Crosstalk 30 Off-isolation
90 Crosstalk Off-isolation 60
20
30
10
0 1K 10K 100K 1M 10M 100M 1G 10G
Freq uen cy (H z)
0 100M
200M
300M 400M 500M Frequency (Hz)
600M
700M
Off-isolation and Crosstalk vs. Frequency
NOTES: 1. Crosstalk = 20 log |VO/VS| 2. Off-isolation = 20 log |VO/VS|
Off-isolation and Crosstalk vs. Frequency
NOTES: 1. Crosstalk = 20 log |VO/VS| 2. Off-isolation = 20 log |VO/VS|
160 VCC = 5V RL = 75 140 Crosstalk 120
(dB)
2
1
0
100 Off-isolation
1 RL = 75
(dB)
20K 50K 30K 40K Frequency (Hz) 60K 70K
80
2
60
3
40 10K
4
5
Off-isolation and Crosstalk vs. Frequency
NOTES: 1. Crosstalk = 20 log |VO/VS| 2. Off-isolation = 20 log |VO/VS|
VCC = 5V 6 1K 10K 100K 1M 10M 100M 1G 10G
Frequency (Hz)
Insertion Loss vs. Frequency
NOTE: 1. Insertion Loss = 20 log |VO/VS|
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IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS (CONTINUED)
2
18
1
16
r DS (On) - Drain Source On-resistance( )
(d B)
0 RL = 75 1
14
12 VCC = 4.75V 10
2 VCC = 5V 3 100M
8
200M
300M
400M
500M
600M
700M
Freq uen cy (Hz)
6
Insertion Loss vs. Frequency
NOTE: 1. Insertion Loss = 20 log |VO/VS|
4 0.0 0.5 1.0 1.5 VIN (Volts)
RON LINK
2.0
2.5
3.0
On-Resistance vs. VIN
TEST CIRCUITS
5V
CONTROL 3.0V 1.5V 0V INPUT
Vcc
A1-A3 B1-B3
5V
E1-E3 A4 5V
0.3V OUTPUT
VIN 50
QS4A101
E4
CONTROL INPUT
t OFF(E)
3.0V 1.5V 0V t ON(E)
GND
B4 500
VOUT 50 pF
OUTPUT
0.3V
Switching Time 5
IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS (CONTINUED)
5V
5V
VCC VS A4 B4 VOUT RL = 75
5V
E1 E2 E3 E4 GND
E2 E3 E4 E1 GND
A1 VS A2 A3 A4
VCC B1 RL = 75 VOUT
QS4A101
5V
QS4A101
Insertion Loss
NOTES: 1. Insertion Loss = 20 log |VO/VS| 2. All unused pins are grounded. NOTES: 1. Crosstalk = 20 log |VO/VS| 2. All unused pins are grounded.
Crosstalk
5V VS A1 A2 A3 A4 5V
E1 E2 E3 E4
VCC B1 VOUT RL = 75
QS4A101
B2 B3
GND
B4
Off-Isolation
NOTE: 1. Off-isolation = 20 log |VO/VS|
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IDTQS4A101 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPST SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX Device Type XX Package
Q
Quarter Size Outline Package
4A101
H igh Performance CMOS Analog Four-Channel SPST Switch with Individual Enables
CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054
for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
for Tech Support: logichelp@idt.com (408) 654-6459
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