WAS4729QB
WAS4729QB
Low On Resistance (0.8Ω) Dual SPDT
Analog Switch with Negative Swing Audio
Capability
Descriptions
The WAS4729QB is a high performance, dual Single
Pole Double Throw (SPDT) analog switch with
negative swing audio capability that features ultra-low
Ron of 0.8Ω (typical) at 3.6V VCC. The WAS4729QB
operates over a wide VCC range of 2.3V to 5.5V and is
designed for break-before-make operation. The select
input is TTL-level compatible.
WAS4729QB is also featured with smart circuitry to
minimize VCC leakage current even when the control
voltage is lower than VCC supply voltage. This feature
suits mobile handset applications by allowing direct
interface with baseband processor general-purpose IO
with minimal battery consumption. In other word, there
is no need of additional device to shift control level to
be the same as that of VCC in real application.
The WAS4729QB is available in QFN1418-10L
package.
Standard
product
is
Pb-Free
and
halogen-Free.
WAS4729QB
QB
= Device code
* = Month (A~Z)
Marking
QFN1418-10L
Http//:www.sh-willsemi.com
Features
Supply voltage
ultra-low On Resistance
High Off isolation
Crosstalk Rejection
-3dB Bandwidth
Rail-to-Rail Signal Range
Break-Before-Make Switching
HBM JEDEC: JESD22-A114
IO to GND
Power to GND
: ±8KV
: ±5KV
: 2.3 ~ 5.5V
: 0.8Ω
@ 3.6V
: -81dB @ 1KHz
: -83dB @ 1KHz
: 80MHz
Device
Order information
Package
QFN1418-10L
Shipping
3000/Reel&Tape
WAS4729QB-10/TR
Applications
Cell phones, PDA, Digital Camera and Notebook
LCD Monitor, TV and Set-Top Box
Audio and Video Signal Routing
1
Jan, 2018 - Rev. 1.1
Will Semiconductor Ltd.
WAS4729QB
Pin configuration (Top view)
NC2
IN2
COM2
NO2
8
9
10
1
VCC
2
NO1
7
GND
6
5
4
3
NC1
IN1
COM1
WAS4729QB
Pin descriptions
Pin Number
2,10
6
5,7
3,9
1
4,8
Symbol
NO
X
GND
NC
X
COM
X
VCC
IN
X
Ground
Data Port(Normally closed)
Common Data Port
Positive Power Supply
Logic Control
Descriptions
Data Port(Normally open)
Function descriptions
Logic Input(IN
X
)
0
1
Note:
X
=1 or 2
Function
NC
X
Connected to COM
X
NO
X
Connected to COM
X
Functional Block Diagram
Will Semiconductor Ltd.
2
Jan, 2018 - Rev. 1.1
WAS4729QB
Application Block Diagram
WAS4729
Note:
WAS4729 switches feature negative signal capability that allows signals below ground to pass through without
distortion. These analog switches operate from a signal +2.3V to 5.5V supply. The input/output signal swing of device is
dependent of the supply voltage V+: the device pass signals as high as V+ and as low as V+ - 6.5, including signals below
ground with minimal distortion. Table 1 shows the input/output signal swing the user can get with different supply voltages.
SUPPLY VOLTAGE, V
+
5.5V
5.0V
4.5V
4.0V
3.5V
3.0V
2.5V
Min.
(V
NC
, V
NO
, V
COM
) = V
+
- 6.5V
-1.0 V
-1.5 V
-2.0 V
-2.5 V
-3.0 V
-3.5 V
-4.0 V
Max.
(V
NC
, V
NO
, V
COM
) = V
+
5.5 V
5.0 V
4.5 V
4.0 V
3.5 V
3.0 V
2.5 V
Will Semiconductor Ltd.
3
Jan, 2018 - Rev. 1.1
WAS4729QB
Absolute Maximum Ratings
(1)
Parameter
Supply Voltage
Control Input Voltage
Continuous Current NO_NC_COM_
Peak Current NO_NC_COM_ (pulsed at 1ms 50% duty cycle)
Peak Current NO_NC_COM_ (pulsed at 1ms 10% duty cycle)
Storage Temperature Range
Junction Temperature under Bias
Lead Temperature (Soldering, 10 seconds)
Power Dissipation
T
STG
T
J
T
L
P
D
Symbol
V
CC
VIN
X
Value
-0.3 ~ 6.5
-0.3 ~ 5.5
±300
±400
±500
-55 ~ 150
150
260
250
Unit
V
V
mA
mA
mA
o
o
C
C
o
C
mW
Recommend operating ratings
(3)
Parameter
Supply Voltage Operating
Control Input Voltage
Input Signal Voltage
Operating Temperature
Input Raise and Fall Time(Control Input V
CC
=2.3~3.6V)
Thermal Resistance
Symbol
V
CC
V
IN
V
IS
T
A
t
r
,t
f
R
θJA
Value
2.3 ~ 5.5
0.0 ~ V
CC
0.0 ~ 5.5
-40 ~ 85
0 ~ 10
350
o
Unit
V
V
V
o
C
ns/V
C/W
Note:
1.
“Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions beyond those indicated in the operational sections of this specification
is not implied.
2.
3.
The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are
observed.
Control input must be held high or Low, it must not float.
Will Semiconductor Ltd.
4
Jan, 2018 - Rev. 1.1
WAS4729QB
DC Electronics Characteristics
(Ta=25
o
C, VCC=3.6V, unless otherwise noted)
Parameter
Input logic high level
Input logic low level
Supply quiescent current
Increase in I
CC
per input
Input leakage current
Off state switch leakage current
On state switch leakage current
On-Resistance
On-Resistance
Between
Channels
On-Resistance Flatness
R
FLAT(ON)
V
IS
=-3~0V, I
OUT
=100mA,
V
IS
=0~3V, I
OUT
=100mA,
0.1
0.12
Ω
Ω
Matching
∆ R
ON
V
IS
=0~VCC, I
OUT
=100mA,
0.08
0.1
Ω
Symbol
V
IH
V
IL
I
CC
I
CCT
I
IN
I
OFF
I
ON
R
ON
V
IS
=0~VCC, I
OUT
=100mA,
0.8
Conditions
VCC: 3.0 ~ 4.5
VCC: 2.3 ~ 3.0
VCC: 3.0 ~ 4.5
VCC: 2.3 ~ 3.0
I
OUT
=0, V
IN
=0 or V
IN
=VCC
I
OUT
=0, VCC=4.5
V
IN
>1.8 or V
IN
<0.5
V
SEL
=VCC
Min.
1.6
1.4
0.6
0.4
1.0
2.0
±1.0
±1.0
±1.0
1.0
Typ.
Max.
Unit
V
V
V
V
uA
uA
uA
uA
uA
Ω
AC Electronics Characteristics
(Ta=25
o
C, VCC=3.6V, unless otherwise noted)
Parameter
Turn-On Time
Turn-Off Time
Break-Before-Make time
-3dB Bandwidth
Off isolation
Crosstalk
Symbol
T
ON
T
OFF
T
BBM
BW
OIRR
Xtalk
Conditions
V
IS
=1.5V,
R
L
=50Ω
V
IS
=1.5V,
R
L
=50Ω
Generate by design
R
L
=50Ω, C
L
=0pF
F=1KHz, R
L
=50Ω
F=10KHz, R
L
=50Ω
F=1KHz, R
L
=50Ω
F=10KHz, R
L
=50Ω
F=20Hz to 20KHz
V
IS
=2Vp-p @R
L
=16Ω,
F=20Hz to 20KHz
V
IS
=2Vp-p @R
L
=32Ω,
F=20Hz to 20KHz
Total Harmonic Distortion
THD
V
IS
=2Vp-p @R
L
=600Ω,
F=20Hz to 20KHz
V
IS
=4Vp-p @R
L
=16Ω,
F=20Hz to 20KHz
V
IS
=4Vp-p @R
L
=32Ω,
F=20Hz to 20KHz
V
IS
=4Vp-p @R
L
=600Ω,
Will Semiconductor Ltd.
5
C
L
=35pF,
C
L
=35pF,
Min.
Typ.
200
200
100
80
-81
-80
-83
-82
0.2
0.1
0.0054
0.56
0.28
0.015
Max.
Unit
ns
ns
ns
MHz
dB
dB
dB
dB
%
%
%
%
%
%
Jan, 2018 - Rev. 1.1
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