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IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-PERFORMANCE CMOS TWO CHANNEL 4PST SWITCH
FEATURES:
* * * * * * * * * *
IDTQS4A105
Low ON resistance: rDS(ON) = 5 Wide bandwidth: 1.3GHz (-3dB point) Crosstalk: 100dB at 50KHz, -70dB at 5MHz, -50dB at 30MHz Off-isolation: -90dB at 50KHz, -60dB at 5MHz, -55dB 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
DESCRIPTION:
APPLICATIONS:
* * * * * * * *
The QS4A105 is a high-performance CMOS two-channel 4PST switch with 3-state outputs. The low ON resistance of the QS4A105 allows inputs to be connected to outputs with low insertion loss and high bandwidth. The QS4A105, with 1.3GHz 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 QS4A105 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 QS4A105 is characterized for operation at -40C to +85C.
High-speed video signal switching/routing HDTV-quality video signal routing Audio signal switching/routing Data acquisition ATE systems Telecomm routing Token Ring transceivers High-speed networking
FUNCTIONAL BLOCK DIAGRAM
A1 A2 A3 A4 B1 B2 B3 B4 C1 C2 C3 C4 D1 D2 D3 D4
E1 E2
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
CO N TR O L LO G IC
INDUSTRIAL TEMPERATURE RANGE
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c 2000 Integrated Device Technology, Inc.
AUGUST 2000
DSC-5555/1
IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VTERM(2) VTERM(3) -- VTERM(3) VAC IOUT PMAX TSTG 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 to +7 0 to +7 0 to +7 -3 120 0.7 -65 to +150 Unit V V V V V mA W C
E1 A1 D4 A2 D3 A3 D2 A4 D1 GND
1 2 3 4 5 6 7 8 9 10
QSOP TOP VIEW
20 19 18 17 16 15 14 13 12 11
VCC E2 C1 B4 C2 B3 C3 B2 C4 B1
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 .
PIN DESCRIPTION
Pin Names Ax, Bx Cx, Dx E1 -E2 I/O I/O I/O I Ports A, B Ports C, D Enable Description
FUNCTION TABLE(1)
E1 H L H L E2 H H L L Ax, Cx I/Os Disconnected Ax = Cx Disconnected Ax = Cx Bx, Dx I/Os Disconnected Disconnected Bx = Dx Bx = Dx
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level
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IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST 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 Ax, Bx = Vcc or 0V, Cx, Dx = 0V or Vcc, E = Vcc Ax = Bx = Cx = Dx = 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 Ax, Bx, Cx, or Dx Enable Turn-Off Time E to Ax, Bx, Cx, or Dx Group Delay(2,4a) -3dB Bandwidth Off-isolation Crosstalk Mux Off Capacitance Mux On Capacitance Charge Injection Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins RL = 1K, CL = 100pF (See Switching Time) RL = 1K, CL = 100pF (See Switching Time) RL = 1K, CL = 100pF VIN = 0 to 1V, 1Vp-p, RL = 75 VIN = 0 to 1V, 1Vp-p, RL = 75, f = 5.5MHz VIN = 1Vp-p, RL = 75, f = 5.5MHz E = Vcc, VIN = VOUT = 0V E = 0V, VIN = VOUT = 0V CL = 1000pF -- -- -- -- -- -- -- -- 1.3 -60 -70 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 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 or B and D pins at indicated current through the switch. ON resistance is determined 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. 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.
POWER SUPPLY CHARACTERISTICS
Symbol ICC Parameter Supply Current Test Conditions VCC = Max., VIN = GND or VCC Max. 3 Unit A
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IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS
180 VCC = 5V RL = 75 150
50 Crosstalk 60 VCC = 5V RL = 75
120 Crosstalk
(dB )
40
90 Off-isolation 60
(dB)
30
20 Off-isolation
30
10
0 1K 10K 100K 1M 10M 100M 1G 10G
Frequen cy (H z)
0 100M
200M
300M
400M
500M
600M
700M
F req u en cy (H z)
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
4
2
120 Crosstalk
(dB )
(dB )
0
100 Off-isolation 80
2 VCC = 5V RL = 75
4
60
6 1K
10K
100K
1M
10M
100M
1G
10G
Freq uen cy (H z)
40 10K
20K
30K
40K
50K
60K
70K
Freq uen cy (H z)
Off-isolation and Crosstalk vs. Frequency
NOTES: 1. Crosstalk = 20 log |VO/VS| 2. Off-isolation = 20 log |VO/VS|
Insertion Loss vs. Frequency
NOTE: 1. Insertion Loss = 20 log |VO/VS|
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IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS (CONTINUED)
4
18
3
16
r DS (On) - Drain Source On-resistance( )
2
(dB )
14
1
12 VCC = 4.75V 10
0 VCC = 5V RL = 75 1 400M 500M 600M 700M 800M 900M 1G
8
Freq uen cy (H z)
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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 5V Vcc A1-A3 C1-C3 A4 VIN 50 VOUT GND C4 500 50 pF OUTPUT 0.3V CONTROL INPUT tON(E) 3.0V 1.5V 0V QS4A105 E1 CONTROL INPUT 3.0V 1.5V 0V 0.3V 5V OUTPUT tOFF(E)
E2
Switching Time 5
IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS (CONTINUED)
5V Vcc VS A4 C4 RL 75 VOUT
VS B4 QS4A105 5V Vcc
A1
C1 RL 75
VOUT
QS4A105 5V E2 E1 GND
5V E2 E1 GND
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 Vcc A1 C1 RL 75 QS4A105 5V E1 E2 GND VOUT
VS
Off-Isolation
NOTE: 1. Off-isolation = 20 log |VO/VS|
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IDTQS4A105 HIGH-PERFORMANCE CMOS TWO-CHANNEL 4PST SWITCH
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDTQS XXXXX Device Type XX Package
Q
Quarter Size Outline Package
4A105
High Performance CMOS Two Channel 4PST Switch
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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