WAS4736

WAS4736 MIC/GND Cross-point Switch for CITA and OMTP Mobile Audio Key Application WAS4736 http://www.sh-willsemi.com Descriptions The WAS4736 is an audio jack detection switch for CITA and OMTP 4-pole accessories. The pin MIC is on audio key side, as WAS4736' O1/O2 is plugged into audio jack of cell phone, it will detect the locations of ground (GND) and microphone (MIC) poles on the audio plug and automatically routes them to the appropriate connections. SOT-353(SC70-5) The MIC switch' Ron is 5 Ω (typical) while the Ground switch has a low Ron of 0.5 Ω (typical) to minimize voltage drop across it, preventing undesired increase in ground reference voltage. As VCC is power-up, WAS4736 is enabled and it consumes ultra-low quiescent current, less than 600nA (typical). The range of signal swing in transmission can be rail-to-rail (0~VCC), even WAS4736 can tolerate signal swing higher than VCC but less than VCC+3V with very little inverse leakage into VCC supply and not any damage ...