HIGH-PERFORMANCE CMOS TWO-BY-TWO ANALOG CROSS POINT
INDUSTRIAL TEMPERATURE RANGE
QUICKSWITCH
®
PRODUCTS
HIGH-PERFORMANCE CMOS
TWO-BY-TWO ANALOG
CROSS POINT SWITCH
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•
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•
•
•
•
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•
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IDTQS4A201
FEATURES:
Low ON resistance: r
DS
(
ON
) = 5Ω
Ω
Fast transition time: t
TRAN
= 6ns
Wide bandwidth: 1.3GHz (-3dB point)
Crosstalk: 90dB at 50KHz, -40dB at 5MHz, -30dB at 30MHz
Off-isolation: -70dB at 50KHz, -40dB at 5MHz, -30dB at
30MHz
Single 5V supply
Can be used as multiplexer or demultiplexer
TTL-compatible control inputs
Ultra-low quiescent current: 3μA
μ
Switch turn on time of 6.5ns
Available in QSOP package
DESCRIPTION:
APPLICATIONS:
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•
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•
High-speed video signal switching/routing
HDTV-quality video signal routing
Phase reversal
Data acquisition
ATE systems
Telecomm routing
Token Ring transceivers
High-speed networking
The QS4A201 is a high-performance CMOS two-by-two analog cross
point switch. This device provides two sets of five high-speed CMOS
switches providing "cross point" connection between inputs and outputs.
The low ON resistance of the QS4A201 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 QS4A201 with 1.3GHz 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 QS4A201 is offered in the QSOP package and 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 QS4A201 is characterized for operation at -40°C to +85°C.
FUNCTIONAL BLOCK DIAGRAM
A
0
C
0
B
0
D
0
A
4
C
4
B
4
D
4
S
E
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
CONTROL
LOGIC
INDUSTRIAL TEMPERATURE RANGE
c 2014 Integrated Device Technology, Inc.
APRIL 2014
1
DSC-5553/4
IDTQS4A201
HIGH-PERFORMANCE CMOS TWO-BY-TWO ANALOG CROSS POINT
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
E
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
C
2
A
2
GND
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Description
Supply Voltage to Ground
DC Switch Voltage V
S
Analog Input Voltage
DC Input Voltage V
IN
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
1
2
3
4
5
6
7
8
9
10
11
12
QSOP
TOP VIEW
24
23
22
21
20
19
18
17
16
15
14
13
V
CC
D
4
B
4
A
4
C
4
D
3
B
3
A
3
C
3
D
2
B
2
S
V
TERM
(2)
V
TERM
(3)
—
V
TERM
(3)
V
AC
I
OUT
P
MAX
T
STG
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
.
PIN DESCRIPTION
Pin Names
Ax, Bx
Cx, Dx
E
S
I/O
I/O
I/O
I
I
Ports A, B
Ports C, D
Bus Switch Enable
Bus Exchange
Description
FUNCTION TABLE
(1)
E
H
L
L
S
X
L
H
Ax
Z
Cx
Dx
Bx
Z
Dx
Cx
Function
Disable
Enable
Exchange
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
2
IDTQS4A201
HIGH-PERFORMANCE CMOS TWO-BY-TWO ANALOG CROSS POINT
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
A
= –40°C to +85°C, V
CC
= 5V ± 5%
Symbol
Analog Switch
V
IN
r
DS
(
ON
)
I
C(OFF)
I
C(ON)
Analog Signal Range
(2)
Drain-source ON resistance
(2,3)
Channel Off Leakage Current
Channel On Leakage Current
Vcc = Min., V
IN
= 0V, I
ON
= 30mA
Vcc = Min., V
IN
= 2.4V, I
ON
= 15mA
Ax, Bx = Vcc or 0V; Cx, Dx = 0V or Vcc;
E
= Vcc
Ax = Bx = 0V
(each channel is turned on sequentially)
Digital Control
V
IH
V
IL
t
TRANS
t
ON(E)
t
OFF(E)
t
PD
f
3dB
X
TALK
C
(OFF)
C
(ON)
Q
CI
Input HIGH Voltage
Input LOW Voltage
Exchange Switching Time
S to Cx, Dx
Enable Turn-On Time
E
to Cx, Dx
Enable Turn-Off Time
E
to Cx, Dx
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
R
L
= 1KΩ, C
L
= 100pF
(See Transition Time)
R
L
= 1KΩ, C
L
= 100pF
(See Switching Time)
R
L
= 1KΩ, C
L
= 100pF
(See Switching Time)
R
L
= 1KΩ, C
L
= 100pF
V
IN
= 0 to 1V, 1Vp-p, R
L
= 75Ω
V
IN
= 0 to 1V, 1Vp-p, R
L
= 75Ω, f = 5.5MHz
V
IN
= 0 to 1V, 1Vp-p, R
L
= 75Ω, f = 5.5MHz
E
= Vcc, V
IN
= V
OUT
= 0V
E
= 0V, V
IN
= V
OUT
= 0V
—
—
—
—
—
—
—
—
1.3
-40
-40
5
10
1.5
250
—
—
—
—
—
—
ps
GHz
dB
dB
pF
pF
pC
0.5
—
6
ns
0.5
—
6.5
ns
2
—
0.5
—
—
—
—
0.8
6.6
V
V
ns
–0.5
—
—
—
—
1
5
13
1
1
Vcc - 1
7
17
—
—
nA
nA
V
Ω
Parameter
Test Conditions
Min.
Typ.
(1)
Max.
Unit
Dynamic Characteristics
NOTES:
1. Typical values are at V
CC
= 5.0V, T
A
= 25°C.
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
I
CC
Parameter
Supply Current
Test Conditions
V
CC
= Max., V
IN
= GND or V
CC
Max.
3
Unit
μA
3
IDTQS4A201
HIGH-PERFORMANCE CMOS TWO-BY-TWO ANALOG CROSS POINT
INDUSTRIAL TEMPERATURE RANGE
TYPICAL CHARACTERISTICS
180
V
C C
= 5V
R
L
= 75
Ω
150
60
V
CC
= 5V
R
L
= 75Ω
50
120
40
(dB )
Crosstalk
60
Off-isolation
30
(dB)
90
30
20
Crosstalk
Off-isolation
10
0
1K
10K
100K
1M
10M
100M
1G
10G
Frequency (Hz)
0
100M
200M
300M 400M 500M
Frequency (Hz)
600M
700M
Off-isolation and Crosstalk vs. Frequency
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
Off-isolation and Crosstalk vs. Frequency
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
160
V
CC
= 5V
R
L
= 75Ω
140
1
0
R
L
= 75Ω
120
Crosstalk
(dB)
1
100
(dB)
2
80
Off-isolation
60
3
4
40
10K
5
20K
50K
30K
40K
Frequency (Hz)
60K
70K
6
1K
V
CC
= 5V
10K
100K
1M
10M
100M
1G
10G
Off-isolation and Crosstalk vs. Frequency
Frequency (Hz)
NOTES:
1. Crosstalk = 20 log |V
O
/V
S
|
2. Off-isolation = 20 log |V
O
/V
S
|
Insertion Loss vs. Frequency
NOTE:
1. Insertion Loss = 20 log |V
O
/V
S
|
4
IDTQS4A201
HIGH-PERFORMANCE CMOS TWO-BY-TWO ANALOG CROSS POINT
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