SGM3798.pdf
No.11155
● 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)
● -40℃ to +85℃ Operating Temperature Range
● Available in Green WLCSP-1.2×1.2-9B Package
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 (75mΩ TYP), 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 -40℃ to +85℃.
