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SG Micro

SGM3798 Datasheet Preview

SGM3798 Datasheet

Audio Headset Analog Switch

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SGM3798
Audio Headset Analog Switch with
Reduced GND Switch RON and FM Capability
GENERAL DESCRIPTION
FEATURES
The SGM3798 is an audio headset analog switch that
is used to detect 3.5mm accessories and switch
SLEEVE and RING2 by external controller. The ground
signal is routed through a pair of low-impedance
ground FETs (75TYP), resulting minimal impact on
audio crosstalk performance. The ground FETs of the
device are designed to allow FM signal pass-through,
making it possible to use the ground line of the headset
as an FM antenna in mobile audio application.
The SGM3798 is available in Green WLCSP-
1.2×1.2-9B package. It operates over an ambient
temperature range of -40to +85.
Ground FET Switches RON : 75mΩ (TYP)
High Isolation Microphone Line Switches
Supports FM Signal Transmission Through the
Ground FETs
Reduction of Click-Pop Noise
Power Supply Voltage Range: 2.6V to 5.0V
Total Harmonic Distortion (MIC): 0.01% (TYP)
Low Current Consumption: 2μA (TYP)
-40to +85Operating Temperature Range
Available in Green WLCSP-1.2×1.2-9B Package
APPLICATIONS
Mobile Phones/Tablet PCs
Notebook/Ultrabook Computers
TYPICAL APPLICATION
Power Supply
C1
0.1μF
MIC_BIAS
R1
Audio MIC
Codec
ACCDET
RDET
Control
R2
1kΩ
VDD
MICP
S1
SELECT
Control
Logic
RPD
GND
SGM3798
SLEEVE
RING2
RING1
FET1 FET2
GNDA GNDB
FM Receiver
Figure 1. Typical Application Circuit
SG Micro Corp
www.sg-micro.com
JANUARY 2017 - REV. A




SG Micro

SGM3798 Datasheet Preview

SGM3798 Datasheet

Audio Headset Analog Switch

No Preview Available !

SGM3798
Audio Headset Analog Switch with
Reduced GND Switch RON and FM Capability
PACKAGE/ORDERING INFORMATION
MODEL
PACKAGE
DESCRIPTION
SPECIFIED
TEMPERATURE
RANGE
SGM3798 WLCSP-1.2×1.2-9B -40to +85
ORDERING
NUMBER
SGM3798YG/TR
PACKAGE
MARKING
3798
XXXX
PACKING
OPTION
Tape and Reel, 3000
NOTE: XXXX = Date Code.
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If
you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
Voltage Range on VDD .................................... -0.3V to 6.0V
Voltage Range on SELECT, MICP, RING2, SLEEVE
.................................................................-0.3V to VDD + 0.3V
Junction Temperature .................................................+150
Storage Temperature Range ........................-65to +150
Lead Temperature (Soldering, 10s) ............................+260
ESD Susceptibility
HBM............................................................................. 8000V
MM................................................................................. 300V
CDM ............................................................................ 1500V
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range ........................................2.6V to 5.0V
Operating Temperature Range .......................-40to +85
OVERSTRESS CAUTION
Stresses beyond those listed may cause permanent damage
to the device. Functional operation of the device at these or
any other conditions beyond those indicated in the operational
section of the specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged by ESD if you don’t
pay attention to ESD protection. SGMICRO recommends that
all integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage
because very small parametric changes could cause the
device not to meet its published specifications.
DISCLAIMER
SG Micro Corp reserves the right to make any change in
circuit design, specification or other related things if necessary
without notice at any time.
SG Micro Corp
www.sg-micro.com
JANUARY 2017
2


Part Number SGM3798
Description Audio Headset Analog Switch
Maker SG Micro
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