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IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH(R) PRODUCTS HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
FEATURES:
* * * * * * * * * * Low ON resistance: rDS(ON) = 5 Fast transition time: tTRAN = 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: 3A Available in QSOP package
IDTQS4A205
DESCRIPTION:
The QS4A205 is a high-performance CMOS analog Four-Channel SPDT multiplexer/demultiplexer with individual enables. The low Onresistance 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-performance 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 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 resulting in lower ground bounce The QS4A205 is characterized for operation at -40C to +85C.
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
I0A YA I1A I0B I1B I0C YC I1C I0D I1D YD YB
S E CO NTROL LOG IC
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
c 2000 Integrated Device Technology, Inc.
OCTOBER 2008
DSC-5551/3
IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
S I0A I1A YA I0B I1B YB GND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC E I0D I1D YD I0C I1C YC
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 -0.5 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
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 .
CAPACITANCE (TA = +25C, f = 1MHz, VIN = 0V, VOUT = 0V)
QSOP TOP VIEW
Symbol CMUX (OFF) Parameter(1) MUX Off Capacitance Conditions E = VCC, VIN = VOUT = 0V E = VCC, VIN = VOUT = 0V E = 0V, VIN = VOUT = 0V E = 0V, VIN = VOUT = 0V Typ. Max. Unit 5.6 7.4 12 15 - - - - pF pF pF pF
CDEMUX (OFF) DEMUX Off Capacitance CMUX (ON) CDEMUX (ON) MUX On Capacitance DEMUX On Capacitance
NOTE: 1. As applicable to the device type.
PIN DESCRIPTION
Pin Names IxA IxB IxC IxD E S YA-YD I/O I/O I/O I/O I/O I I I/O Description Demux Port A Demux Port B Demux Port C Demux Port D Enable Input Select Input Mux Port A-D
FUNCTION TABLE(1)
Enable E H L L Select S X L H YA Z I0A I1A MUX/DEMUX Ports YB Z I0B I1B YC Z I0C I1C YD Z I0D I1D Function Disable Select 0 Select 1
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High-Impedance
2
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: 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 IN = Vcc or 0V; YN = 0V or Vcc; E = Vcc IN = YN = 0V (each channel is turned on sequentially) Digital Control VIH VIL tTRANS tON(EN) tOFF(EN) tPD f3dB XTALK QCI Input HIGH Voltage Input LOW Voltage Switching Time of MUX S to Y Enable Turn-On Time, E to Y Enable Turn-Off Time, E to Y Group Delay(2,4) -3dB Bandwidth Off-isolation Crosstalk Charge Injection Guaranteed Logic HIGH for Control Pins Guaranteed Logic LOW for Control Pins RL = 1K, CL = 100pF RL = 1K, CL = 100pF RL = 1K, CL = 100pF RL = 1K, CL = 100pF VIN = 1Vp-p, RL = 75 VIN = 1Vp-p, RL = 75, f = 5MHz VIN = 1Vp-p, RL = 75, f = 5MHz 2 -- 0.5 0.5 0.5 -- -- -- -- -- -- -- -- -- -- -- 830 -60 -100 1.5 -- 0.8 6.6 6 6 250 -- -- -- -- V V ns ns ns ps MHz dB dB pC -0.5 -- -- -- -- 1 5 13 2 2 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 ICCQ Parameter Quiescent Power Test Conditions VCC = Max., VIN = GND or VCC, f = 0 Max. 3 Unit A
3
IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS
150 VCC = 5 V RL = 75
60 VCC = 5V RL = 75
120
50
90
(dB)
(dB )
40
Crosstalk Off-isolation 60
Crosstalk 30 O ff-isolation 20
30
10
0 1K 10K 100K 1M 10M 100M 1G
0 100M 200M 300M 400M 500M 600M 700M
Frequency (H z)
Freque ncy (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 Crosstalk VCC = 5V RL = 75
4
140
2 RL = 1K
120
(dB )
0
(dB)
Off-isolation
100
2 RL = 75 VCC = 5V
80
4
60
6
40 10K 20K 30K 40K 50K 60K 70K
1K
10K
100K
1M
10M
100M
1G
Frequency (H z)
Frequency (H z)
Off-isolation and Crosstalk vs. Frequency Insertion Loss vs. Frequency
NOTE: 1. Insertion Loss = 20 log |VO/VS|
NOTES: 1. Crosstalk = 20 log |VO/VS| 2. Off-isolation = 20 log |VO/VS|
4
IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS (CONTINUED)
18
2 RL = 1K 1
16
r DS (On) - Drain Source On-resistance( )
14
0
(dB )
1 RL = 75 VCC = 5V
12 VCC = 4.75V 10
2
3
8
4 100M 200M 300M 400M 500M 600M 700M
Frequency (H z)
800M
900M
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 3.0V VCC 0V E QS4A205 S I0A I1A I0B, I1B I0C, I1C I0D, I1D YD YC YB YA 500 SELECT INPUT 1.5V 0V
5V
VIN
tTRANS
tTRANS
VOUT
50
GND
SWITCH OUTPUT
1.5V
50pF
Transition Time
5
IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS (CONTINUED)
5V 3.0V VCC 0V S I0A I1A I0B, I1B I0C, I1C I0D, I1D YD YC YB YA 500 CONTROL INPUT 5V tON(EN) 1.5V 0V
VIN E QS4A205
OUTPUT VOUT
0.3V
50
GND
50pF
OUTPUT
0.3V
tOFF(EN)
Enable Switching Time
+5V
+5V
VS RS = 50
I0A
Vcc
VIN
I0A IxA
Vcc
QS4A205 S E GND
YA RL 75
YO
IxD S RS = 50 E
QS4A205
YA RL 75
YO
GND
Insertion Loss
NOTE: 1. Insertion Loss = 20 log |VO/VS| NOTE: 1. Crosstalk = 20 log |VO/VS|
Crosstalk
+5V
Vcc VS IxA IxD RS = 50 S E GND QS4A205 YA RL 75 YO
+5V
Off-Isolation
NOTE: 1. Off-isolation = 20 log |VO/VS|
6
IDTQS4A205 HIGH-PERFORMANCE CMOS ANALOG FOUR-CHANNEL SPDT MUX/DEMUX
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
QS XXXXX Device Type XX Package
Q QG
Quarter Size Small Outline Package QSOP - Green
4A205
High Performance CMOS Analog Four-Channel SPDT MUX/DEMUX
CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138
for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 7
for Tech Support: logichelp@idt.com

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