Audio Jack Detection 12-Pin WLCSP T/R

The FSA8108 is an audio jack detection switch for 3- or 4-pole accessories that detects the audio plug connection. The detection circuit monitors the microphone bias voltage to detect a volume up/down or send/end key press. For system flexibility, the FSA8108 features an I2C port with registers to allow programmability of AC timing specifications.

• Detection:
  • Audio Plug Connection
  • Volume Up/Down Key Press
  • Send/End Key Press
• VDD: 2.7 to 4.5V
• VIO: 1.6V to VDD
• THD (MIC): 0.01% Typical
• LDO Output for MIC Bias Voltage: 2.4V
• ESD (IEC 61000-4-2): 15kV
• Operating Temperature: -40°C to 85°C
• Package: 12-Ball WLCSP
• Top Mark: G6
• Ordering Information: FSA8108BUCX