SGM3157
GENERAL DESCRIPTION
The SGM3157 is a single, bidirectional, single-pole/double-
throw (SPDT) CMOS analog switches designed to operate
from a single +1.8V to +5.5V supply. It features
high-bandwidth (300MHz) and low ON-resistance (4.5Ω
typ), Targeted applications
for
audio switching.
SGM3157 features guaranteed on-resistance matching (0.3Ω
max) between switches and guaranteed on-resistance
flatness over the signal range (2.3Ω TYP). This ensures
excellent linearity and low distortion when switching audio
signals.
SGM3157 is available in a SC70-6 package.
4.5Ω Low Voltage SPDT
Analog Switch in 6-pin SC70
FEATURES
−
Voltage Operation : 1. 8 V to 5. 5 V
−
On-Resistance: 4.5Ω (typ) at 5.0V
−
Fast Switching Time
t
ON
20 ns
t
OFF
15 ns
−
High Bandwidth: 300 MHz
−
High Off-Isolation: 51dB at 10MHz
−
Rail-to-Rail Operation
−
TTL/CMOS Compatible
−
Break-Before-Make Switching
−
Extended Industrial Temperature Range:
–40°C to 85°C
−
Lead (Pb) Free SC70-6 Package
PIN CONFIGURATIONS(TOP VIEW)
SGM3157
APPLICATIONS
Portable Instrumentation
Battery-Operated Equipment
Computer Peripherals
Cell Phones
PDAs
MP3s
NO
1
6
IN
3157
SC70-6
GND
2
5
V+
COM
NC
3
4
FUNCTION TABLE
LOGIC
0
1
NO
OFF
ON
NC
ON
OFF
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