UM3157
Low-Voltage SPDT Analog Switch
UM3157
SC70-6/SC88/SOT363
General Description
The UM3157 is an advanced CMOS analog switch fabricated with silicon gate CMOS
technology. It achieves very low propagation delay and R
DS(ON)
resistances while maintaining
CMOS low power dissipation. These make it ideal for portable and battery power applications.
The switch conducts signals within power rails equally well in both directions when on, and
blocks up to the power supply level when off. Break-before-make is guaranteed.
The select pin has over-voltage protection that allows voltages above V
CC
, up to 6.5V to be
present on the pin without damage or disruption of operation of the part, regardless of the
operating voltage.
The UM3157 can maintain low power consumption for rail-to-rail signaling as long as the control
signal input is held at a level that is greater than V
IH
minimum and less than V
IL
maximum by
improving the control circuitry input buffer. so the part can be used in mixed voltage rail
environments, especially services the mobile handset applications very well allowing for the direct
interface with baseband processor general purpose I/Os, and it is no longer necessary to have the
control input equal to V
CC
to maintain low power consumption
Applications
Sample-and-Hold Circuits
Battery powered Equipment
Audio and Video Signal Routing
Communication Circuits
Features
Control Inputs Are 5V Tolerant
Low Charge Injection
Excellent ON-State Resistance Matching
Low Total Harmonic Distortion (THD)
1.65V to 5.5V Single-Supply Operation
ESD Performance:
Human Body Model＞2KV
Machine Model＞200V
SC70-6/SC88/SOT363 Package
Pb-Free Package
Pin Configurations
Top View
M: Monthly Code
UM3157
SC70-6/SC88/SOT363
________________________________________________________________________
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UM3157
Ordering Information
Part Number
UM3157
Packaging Type
SC70-6/SC88/SOT363
Marking Code
B7A
Shipping Qty
3000pcs/7 Inch
Tape & Reel
Function Table
Select Input
L
H
Function
B0 Connected to A
B1 Connected to A
Absolute Maximum Ratings
Symbol
Parameter
Limit
Unit
V
CC
Supply Voltage
- 0.5 to + 6.5
V
V
S
DC Switch Voltage (Note 1)
- 0.5 to (V
CC
+ 0.5)
V
IN
DC IN Voltage (Note 1)
- 0.5 to + 6.5
-50
I
IK
DC Input Diode Current@ V
IN
＜0V
mA
I
OUT
DC Output Current
128
I
CC
/ I
GND
DC V
CC
or Ground Current
+100
T
J
Junction Temperature Under Bias
+150
T
STG
Storage Temperature
- 65 to +150
°C
T
L
Junction Lead Temperature (Soldering, 10seconds)
260
θ
JA
Thermal Resistance
350
°C/W
P
D
Power Dissipation @ +85°C
180
mW
1: The input and output negative voltage ratings may be exceeded if the input and output diode
current ratings are observed.
Recommended Ratings (Note2)
Parameter
Supply Voltage Operating
Switch Input Voltage
Select Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time
t
r
, t
f
Control Input Vcc=2.3V to 3.6V
Control Input Vcc=4.5V to 5.5V
2: Select input must be held HIGH or LOW, it must not float.
Symbol
V
CC
V
IN
V
IN
V
OUT
T
A
Limit
1.65 to 5.5
0 to V
CC
0 to V
CC
0 to V
CC
-55 to +125
0 to 10
0 to 5.0
Unit
V
°C
ns/V
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UM3157
Electrical Characteristics
Limits (–40 to 85 °C)
Symbol
Parameter
Test Conditions
Vcc(V)
Temp
Min
DC Electrical Characteristics
Analog Signal Range
I
IN
I
OFF
Input Leakage Current
OFF State Leakage
Current
0≤
V
I
N
≤ 5.5V
0≤
A, B≤
Vcc
Vcc
0 to 5.5
Full
Room
Full
Room
Full
1.1
1.4
Full
1.8
2.1
2.6
0.4
0.7
Full
1.0
1.3
Room
Full
Full
Full
Full
Full
Full
Full
Full
Full
Room
Room
Room
Room
Room
Room
Room
Room
0.15
0.2
Ω
I
A
=-8mA, V
Bn
= 1.6V
I
A
=-4mA, V
Bn
= 1.15V
I
A
=-30mA
0≤
V
Bn
≤ Vcc
I
A
=-24mA
R
FLAT
On Resistance Flatness
(Note3,4,6)
0≤
V
Bn
≤ Vcc
I
A
=-8mA,
0≤
V
Bn
≤ Vcc
I
A
=-4mA,
0≤
V
Bn
≤ Vcc
2.3
1.65
5.0
3.3
2.5
1.8
0.5
0.5
6.0
12
28
125
3.0
5.0
7.0
4.0
10
5.0
13
6.5
17
1.5
1.0
10
7.0
12
15
9.0
20
12
30
20
50
25
50
100
300
V
V
0
±0.05
±0.05
V
cc
±0.1
±1
±0.1
±1
V
μA
Typ
Max
Unit
1.65 to 5.5
1.65 to 2.3
2.3 to 2.7
μA
V
IH
Input High Voltage
2.7 to 3.6
3.6 to 4.3
4.3 to 5.5
1.65 to 2.3
2.3 to 2.7
V
IL
Input Low Voltage
2.7 to 3.6
3.6 to 4.3
4.3 to 5.5
I
CC
Quiescent Supply
Current
R
ON
On-Resistance (Note3)
V
IN
=Vcc or GND
I
O
=0
V
IN
= 0V, I
O
=30mA
V
IN
= 2.4V, I
O
=-30mA
V
IN
= 4.5V, I
O
=-30mA
V
IN
= 0V, I
O
=24mA
V
IN
= 3V, I
O
=-24mA
V
IN
= 0V, I
O
=8mA
V
IN
= 2.3V, I
O
=-8mA
V
IN
= 0V, I
O
=4mA
V
IN
= 1.65V, I
O
=-4mA
I
A
=-30mA
0≤
V
Bn
≤ Vcc
I
A
=-24mA
0≤
V
Bn
≤ Vcc
I
A
=-8mA,
0≤
V
Bn
≤ Vcc
I
A
=-4mA,
0≤
V
Bn
≤ Vcc
I
A
=-30mA, V
Bn
= 3.15V
5.5
4.5
3.0
2.3
1.65
4.5
3.0
2.3
1.65
4.5
3.0
μA
Ω
R
RANGE
On Resistance Over
Signal Range
(Note3,7)
Ω
ΔR
ON
On Resistance Match
Between Channels
(Note3,4,5)
I
A
=-24mA, V
Bn
= 2.1V
Ω
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UM3157
Electrical Characteristics
(Continued)
Limits (–40 to 85 °C)
Symbol
Parameter
Test Conditions
Vcc(V)
Temp
Min
AC Electrical Characteristics
t
PHL
t
PLH
t
PZL
t
PZH
t
PLZ
t
PHZ
Propagation Delay
Bus to Bus (Note 9)
Output Enable Time
Turn On Time
(A to Bn)
Output Disable Time
Turn Off Time
(A Port to B Port)
Break Before Make Time
(Note 8)
Charge Injection
(Note 8)
Off Isolation (Note 10)
Crosstalk
-3 dB Bandwidth
Total Harmonic Distortion
(Note8)
C
L
= 0.1 nF,
V
GEN
= 0 V R
GEN
= 0Ω
R
L
=50Ω, f = 10 MHz
R
L
=50Ω, f = 10 MHz
R
L
=50Ω
R
L
=600Ω
0.5V
P-P
f=600Hz to 20kHz
1.65 to1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
1.65 to1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
1.65 to1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
1.65 to1.95
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
5.0
3.3
1.65 to 5.5
1.65 to 5.5
1.65 to 5.5
5.0
1.2
0.8
0.3
7.0
3.5
2.5
1.7
3.0
2.0
1.5
0.8
0.5
0.5
0.5
0.5
7.0
3.0
-57
-54
250
0.011
24
14
7.6
5.7
13
7.5
5.3
3.8
Typ
Max
Unit
VI = OPEN
Full
ns
V
I
= 2×V
CC
for t
PZL
V
I
= 0 V for t
PZH
V
I
= 2×V
CC
for t
PLZ
V
I
= 0 V for t
PHZ
Full
ns
Full
ns
t
D
Q
INJ
O
IRR
Xtalk
BW
THD
Capacitance
Full
Room
Room
Room
Room
Room
ns
pC
dB
dB
MHz
%
IN Pin Input Capacitance
2.3
pF
V
CC
= 0V
(Note11)
B Port Off Capacitance
C
IO-B
6.5
pF
V
CC
=5.0V
(Note11)
A Port Capacitance when
C
IOA-ON
Switch is Enabled
V
CC
=5.0V
18.5
pF
(Note11)
3: Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the
lower of the voltages on the two (A or B Ports).
4: Parameter is characterized but not tested in production.
5:
ΔR
ON
=
︱R
ON (B0)
−
R
ON(B1)
︱measured
at identical V
CC
, temperature and voltage levels.
6: Flatness is defined as the difference between the maximum and minimum value of On Resistance over the specified range of
conditions.
7: Guaranteed by Design.
8: Guaranteed by Design.
9: This parameter is guaranteed by design but not tested. The bus switch contributes no propagation delay other than the RC delay of
the On Resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).
10: Off Isolation = 20 log10 [V
A
/V
Bn
].
11: T
A
= +25, f = 1 MHz, Capacitance is characterized but not tested in production.
C
IN
________________________________________________________________________
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UM3157
Test Circuits/Timing Diagrams
________________________________________________________________________
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