WAS3157B
WAS3157B
5.5Ω, 400MHz Bandwidth, SPDT Analog
Switch
Descriptions
The WAS3157B is a high performance, single pole
double throw (SPDT) CMOS analog switch for bus
switching or audio switching applications. It features
high bandwidth up to 400MHz at -3dB and low
on-resistance (5.5Ω Typ.).
The SEL pin has overvoltage protection that allows
voltages above VCC, up to 7.0V to be present on the
pin without damage or disruption of operation of the
part, regardless of the operating voltage.
The
WAS3157B is also featured with smart circuitry to
minimize VCC leakage current even when SEL control
voltage is lower than VCC supply voltage. In other
word, there is no need of additional device to shift SEL
level to be the same as that of VCC in real application.
The
WAS3157B
is
available
in
standard
Pin configuration (Top view)
SOT-363
Http//:www.sh-willsemi.com
SOT-363(SC-70-6L) package. Standard product is
Pb-Free and halogen-Free.
Features
Supply voltage
On-Resistance
-3dB Bandwidth
Off isolation
Low quiescent current
Break-before-make function
ESD protection
HBM
:
±8000V
:
±600V
Device
WAS3157B-6/TR
Package
SOT-363
Shipping
3000/Reel&Tape
MM
Small package SOT-363
: 2.3 ~ 5.5V
: 5.5Ω @ VCC=4.5V
: 400MHz @ C
L
=5pF
: -69dB @ 10MHz
: <1uA
*
Marking
S7 = Device code
= Month (A~Z)
Order information
Applications
Cell phones
MID
Other portable equipments
Will Semiconductor Ltd.
1
Dec, 2014 - Rev. 1.4
WAS3157B
Pin descriptions
Pin Number
1
2
3
4
5
6
Symbol
B1
GND
B0
A
VCC
SEL
Ground
Data 0 terminal, Normally closed
Common Data terminal,
Power supply
Switch select pin, Digit logic low or high
Connect to B0 or B1 according to SEL logic
Descriptions
Data 1 terminal, Normally open
Function descriptions
Logic Level (SEL pin, Pin 6)
L
H
Function
B0 connected to A
B1 connected to A
Logic diagram and symbol
Absolute maximum ratings
Parameter
Supply voltage range
Data input/output voltage range
Select input voltage range
Continues current
Junction temperature range
Lead temperature range
Storage temperature range
Thermal resistance
Symbol
VCC
V
B0
, V
B1
, V
A
V
SEL
I
B0
, I
B1
, I
A
T
J
T
L
T
STG
R
θJA
Value
-0.5 ~ 6.5
-0.5 ~ 6.5
-0.5 ~ 6.5
±50
150
260
-65 ~ 150
350
o
Unit
V
V
V
mA
o
o
o
C
C
C
C/W
Recommend operating ratings
Parameter
Supply voltage range
Data input/output voltage range
Select input voltage range
Operating temperature range
Symbol
VCC
V
B0
, V
B1
, V
A
V
I
T
A
Value
2.3 ~ 5.5
0.0 ~ VCC
0.0 ~ VCC
-40 ~ 85
Unit
V
V
V
o
C
Will Semiconductor Ltd.
2
Dec, 2014 - Rev. 1.4
WAS3157B
Electronics Characteristics
(Ta=25
o
C, VCC=4.5V, unless otherwise noted)
Parameter
Select logic high level
Select logic low level
Quiescent current
Select input leakage current
Off state switch leakage current
On state switch leakage current
On-Resistance
(Channel B0 and Channel B1)
Symbol
V
IH
V
IL
I
CC
I
SEL
I
OFF
I
ON
Conditions
VCC=3.6½4.5V
VCC=2.3½3.6V
VCC=3.6½4.5V
VCC=2.3½3.6V
I
OUT
=0
V
SEL
=0 ~ VCC
See figure 1
See figure 2
VCC=4.5V,
R
ON
V
A
=4.5V,
I
OUT
=30mA,
See figure 3
VCC=4.5V,
On-Resistance
(Channel B0 or Channel B1)
R
ON
V
A
=0V,
I
OUT
=30mA,
See figure 3
VCC=3.6V,
On-Resistance
(Channel B0 or Channel B1)
R
ON
V
A
=3.6V,
I
OUT
=30mA,
See figure 3
VCC=3.6V,
On-Resistance
(Channel B0 or Channel B1)
Propagation delay time
(A to Bn or Bn to A)
Select input to switch on time
(A to Bn or Bn to A)
Select input to switch off time
(A to Bn or Bn to A)
Break-Before-Make time
-3dB Bandwidth
Charge injection
Off isolation
Crosstalk
Total harmonic distortion
Select pin input capacitance
B port off capacitance
A port on capacitance
R
ON
V
A
=0V,
I
OUT
=30mA,
See figure 3
T
PLH
/ T
PHL
T
ON
T
OFF
T
BBM
BW
Qg
OIRR
Xtalk
THD
C
IN
C
OFF
C
ON
C
L
=50pF
See figure 4, 5
C
L
=50pF
See figure 5
C
L
=50pF
See figure 5
Generated by design
R
L
=50Ω, C
L
=5pF
C
L
=0.1nF, VCC=5V
R
L
=50Ω, F=10MHz
R
L
=50Ω, F=10MHz
R
L
=600Ω, F=1KHz
V
A
=0.5Vp-p
VCC=0V
0.5
400
10
-69
-68
0.03
5.5
7.5
18.5
0.3
80
50
1.2
120
80
ns
ns
ns
ns
MHz
pC
dB
dB
%
pF
pF
pF
4.5
9.0
Ω
6.5
13
Ω
3.8
7.0
Ω
5.5
12
Ω
Min.
1.5
1.3
0.6
0.4
1.0
±0.1
±0.1
±0.1
Typ.
Max.
Unit
V
V
V
V
uA
uA
uA
uA
Will Semiconductor Ltd.
3
Dec, 2014 - Rev. 1.4
WAS3157B
Typical Characteristics
(Ta=25
o
C, VCC=4.5V, unless otherwise noted)
10
9
R
DS(on)
- On-Resistance (
)
Vcc=3.0V
Vcc=3.6V
50
40
Supply Current (uA)
VCC=3.6V
8
7
6
5
4
3
2
1
0
0
1
30
20
10
0
-10
-20
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Vcc=4.5V
2
3
V
A
VOLTAGE (V)
4
5
Logic Level (V)
On-Resistance vs. VCC, VA voltage
Supply current vs. Select logic level
Bandwidth
Off isolation
Crosstalk
Will Semiconductor Ltd.
4
Eye Diagram (480Mbps)
Dec, 2014 - Rev. 1.4
WAS3157B
Test Circuit
Figure 1: Off state switch leakage current
Figure 2: On state switch leakage current
VCC
IO
B0
A
Output
CL
V
VCC
VIL
or
VIH
B1
SEL
Output
CL
VA
A
B0 or B1
VO
Data Input
Data Output
GND
Ron=V/IO
Figure 3: On-Resistance
TPLH
TPHL
Figure 4: Propagation delay time
Figure 5: Select input to switch on/off time
Will Semiconductor Ltd.
5
Dec, 2014 - Rev. 1.4
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