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