SGM4157
GENERAL DESCRIPTION
The SGM4157 is a single Low ON-Resistance(1Ω), fast
single-pole double-throw (SPDT) CMOS switch. It is
designed for low operating voltage, high current switching
of speaker output for cell phone applications. The SGM4157
can handle a balanced microphone/speaker/ringtone
generator in a monophone mode. The device contains a
break−before−make (BBM) feature.
The control input, IN, tolerates input drive signals up to
5.5V, independent of supply voltage.
SGM4157 is available in a DFN-6 package.
SPDT 1Ω Analog Switch
FEATURES
−
−
−
−
−
−
−
−
−
−
Voltage Operation : 1. 8 V to 5. 5 V
On-Resistance: 0.8Ω (TYP) at 4.5V
-3dB Bandwidth: 80 MHz
High Off-Isolation: 60dB at 1MHz
Rail-to-Rail Operation
Low Static Power
TTL/CMOS Compatible
Break-Before-Make Switching
Extended Industrial Temperature Range: –40°C to 85°C
Microsize Package
PIN CONFIGURATIONS（TOP VIEW）
APPLICATIONS
Portable Instrumentation
Battery-Operated Equipment
Computer Peripherals
Cell Phones
PDAs
MP3s
SGM4157YD6
NO
GND
NC
1
2
3
DFN-6
6
5
IN
V+
FUNCTION TABLE
LOGIC
0
1
NO
OFF
ON
NC
ON
OFF
4 COM
PIN DESCRIPTION
NAME
NO
GND
NC
COM
V
+
IN
PIN
1
2
3
4
5
6
FUNCTION
Normally-open terminal
ground
Normally-closed terminal
Common terminal
Power supply
Digital control pin to connect the COM
terminal to the NO or NC terminals
Switches Shown For Logic “0” Input
Note: NO, NC and COM
terminal
may be an input or output.
Shengbang Microelectronics Co, Ltd
Tel: 86/451/84348461
www.sg-micro.com
REV. B
ELECTRICAL CHARACTERISTICS
(V
+
= +2.7V to +3.6V, V
IH
= +1.4 V, V
IL
= +0.5V, T
A
= - 40°C to +85°C, Typical values are at V
+
= 3.0V, T
A
= + 25°C, unless otherwise noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match
Between Channels
On-Resistance Flatness
Source OFF Leakage current
Channel ON Leakage current
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
DYNAMIC CHARACTERISTICS
Turn-On Time
t
ON
V
NO
or V
NC
= 1.5V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 2;
V
IH
= 1.5V, V
IL
= 0V
V
NO
or V
NC
= 1.5V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 2;
V
IH
= 1.5V, V
IL
= 0V
V
NO1
or V
NC1
= V
NO2
or V
NC2
= 3V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 3
RS = 39Ω, C
L
= 50pF,
Test Circuit 4
f = 10MHz
R
L
= 50Ω, C
L
= 5pF,
Signal = 0dBm,
f = 1MHz
Test Circuit 5
Signal = 0dBm, R
L
= 50Ω, C
L
= 5pF,
Test Circuit 6
f = 1MHz
+25°C
28
ns
V
INH
V
INL
I
IN
V
+
= +3.6V, V
IN
= 0 or 5.5V
- 40°C to
+85°C
- 40°C to
+85°C
- 40°C to
+85°C
0.9
0.55
0.001
1
V
V
µA
SYMBOL
V
NO
, V
NC
, V
COM
R
ON
∆R
ON
V
+
= 2.7V,
V
NO
or V
NC
= 1.5V,
I
COM
= -10 mA,
Test Circuit 1
V
+
= 2.7V,
V
NO
or V
NC
= 1.5V,
I
COM
= -10 mA,
Test Circuit 1
V
+
= 2.7V,
V
NO
or V
NC
= 1.0V, 1.5V, 2.0V,
I
COM
= -10 mA,
Test Circuit 1
V
+
= 3.6V,
V
NO
or V
NC
= 0.3V, 3.3V,
V
COM
=
0.3V, 3.3V,
V
+
= 3.6V, V
COM
= 0.3V,
3.3V,
V
NO
or V
NC
= 0.3V, 3.3V, or floating
CONDITIONS
TEMP
- 40°C to
+85°C
+25°C
- 40°C to
+85°C
+25°C
- 40°C to
+85°C
+25°C
- 40°C to
+85°C
- 40°C to
+85°C
- 40°C to
+85°C
MIN TPY MAX UNITS
0
1.9
2.3
0.45
0.5
0.2
0.35
1
1
V
+
V
Ω
Ω
Ω
Ω
Ω
Ω
µA
µA
R
FLAT(ON)
I
NC(OFF)
, I
NO(OFF)
I
NC(ON)
, I
NO(ON)
,
I
COM(ON)
Turn-Off Time
Break-Before-Make Time
Delay
Skew
Off Isolation
Bandwidth –3 dB
Source OFF Capacitance
Channel ON Capacitance
POWER REQUIREMENTS
Power Supply Range
Power Supply Current
t
OFF
t
D
t
SKEW
O
ISO
BW
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
- 40°C to
+85°C
- 40°C to
+85°C
22
27
9
-40
-60
80
20
73
ns
ns
ns
dB
dB
MHz
pF
pF
C
NC(OFF)
, C
NO(OFF)
C
NC(ON)
, C
NO(ON)
,
f = 1MHz
C
COM(ON)
V
+
I
+
1.8
0.001
5.5
3
V
µA
V
+
= +5.5V, V
IN
= 0V or V
+
Specifications subject to change without notice.
2
SGM4157
ELECTRICAL CHARACTERISTICS
(V
+
= +4.5V to +5.5V, V
IH
= +2.0 V, V
IL
= +0.8V, T
A
= - 40°C to +85°C, Typical values are at V
+
= 5.0V, T
A
= + 25°C, unless otherwise noted.)
PARAMETER
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance Match Between
Channels
On-Resistance Flatness
Source OFF Leakage current
Channel ON Leakage current
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Leakage Current
DYNAMIC CHARACTERISTICS
Turn-On Time
t
ON
V
NO
or V
NC
= 3.0V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 2;
V
IH
= 1.5V, V
IL
= 0V
V
NO
or V
NC
= 3.0V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 2;
V
IH
= 1.5V, V
IL
= 0V
V
NO1
or V
NC1
= V
NO2
or V
NC2
= 3V,
R
L
= 300Ω, C
L
= 35pF,
Test Circuit 3
RS = 39Ω, C
L
= 50pF,
Test Circuit 4
f = 10MHz
R
L
= 50Ω, C
L
= 5pF,
Signal = 0dBm,
f = 1MHz
Test Circuit 5
Signal = 0dBm, R
L
= 50Ω, C
L
= 5pF,
Test Circuit 6
f = 1MHz
+25°C
20
ns
V
NO
, V
NC
, V
COM
R
ON
∆R
ON
R
FLAT(ON)
I
NC(OFF)
, I
NO(OFF)
I
NC(ON)
, I
NO(ON)
,
I
COM(ON)
V
INH
V
INL
I
IN
V
+
= +5.5V, V
IN
= 0 or 5.5V
V
+
= 4.5V,
V
NO
or V
NC
= 3.5V,
I
COM
= -10 mA,
Test Circuit 1
V
+
= 4.5V,
V
NO
or V
NC
= 3.5V,
I
COM
= -10 mA,
Test Circuit 1
V
+
= 4.5V,
V
NO
or V
NC
= 1.0V, 2.0V,
3.5V, I
COM
= -10 mA,
Test Circuit 1
V
+
= 5.5V,
V
NO
or V
NC
= 1.0V, 4.5V,
V
COM
= 1.0V,
4.5V,
V
+
= 5.5V, V
COM
=
1.0V, 4.5V,
V
NO
or V
NC
= 1.0V, 4.5V, or floating
- 40°C to +85°C
+25°C
- 40°C to +85°C
+25°C
- 40°C to +85°C
+25°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
- 40°C to +85°C
0
0.8
2
0.43
0.47
0.2
0.3
1
1
V
+
V
Ω
Ω
Ω
Ω
Ω
Ω
µA
µA
SYMBOL
CONDITIONS
TEMP
MIN TPY
MAX UNITS
1.5
0.6
0.001
1
V
V
µA
Turn-Off Time
Break-Before-Make Time
Delay
Skew
Off Isolation
Bandwidth –3 dB
Source OFF Capacitance
Channel ON Capacitance
POWER REQUIREMENTS
Power Supply Range
Power Supply Current
t
OFF
t
D
t
SKEW
O
ISO
BW
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
- 40°C to +85°C
23
23
9.0
-40
-60
80
20
73
ns
ns
ns
dB
dB
MHz
pF
pF
C
NC(OFF)
, C
NO(OFF)
C
NC(ON)
, C
NO(ON)
,
f = 1MHz
C
COM(ON)
V
+
I
+
1.8
0.001
5.5
3
V
µA
V
+
= +5.5V, V
IN
= 0V or V
+
- 40°C to +85°C
Specifications subject to change without notice.
3
SGM4157
ORDERING INFORMATION
MODEL
SGM4157
PIN-
PACKAGE
SPECIFIED
TEMPERATURE
RANGE
ORDERING
NUMBER
SGM4157YD6/TR
PACKAGE
MARKING
4157
PACKAGE
OPTION
DFN-6
- 40°C to +85°C
Tape and Reel, 3000
ABSOLUTE MAXIMUM RATINGS
V
+
, IN to GND.............................................................- 0.3V to +6V
Analog, Digital voltage range
(1)
................... - 0.3V to (V
+
+ 0.3V)
Continuous Current NO, NC, or COM..........................±200mA
Peak Current NO, NC, or COM......................................±300mA
Operating Temperature Range..............................- 40°C to +85°C
Junction Temperature...........................................................+150°C
Storage Temperature.............................................- 65°C to +150°C
Lead Temperature (soldering, 10s).....................................+260°C
ESD
（HBM）
...............................................................................3000V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress
ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational
sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
(1)
Signals on NC, NO, or COM or IN exceeding V+ will be clamped by internal diodes. Limit forward diode current to maximum
current ratings.
4
SGM4157
TYPICAL PERFORMANCE CHARACTERISTICS
On Response vs.Frequency
3
V
+
= +5V
T
A
= +25℃
0
On Response(dB)
On Response vs.Frequency
3
V
+
= +3V
T
A
= +25℃
0
On Response(dB)
-3
-3
-6
-6
-9
0.1
1
10
Frequency(MHz)
100
1000
-9
0.1
1
10
Frequency(MHz)
100
1000
Response vs.Frequency
20
0
-20
On Response(dB)
-40
-60
-80
-100
-120
-140
0.01
V
+
= +5V
T
A
= +25℃
0.1
1
10
Frequency(MHz)
100
1000
OFF-ISOLATION
Response vs.Frequency
20
0
-20
On Response(dB)
-40
-60
-80
-100
-120
-140
0.01
V
+
= +3V
T
A
= +25℃
0.1
1
10
Frequency(MHz)
100
1000
OFF-ISOLATION
５
SGM4157
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