NCS2300MUTAG ON Semiconductor

NCS2300 Headset Detection Interface The NCS2300 is a compact and cost effective headset detection interface IC. It integrates a comparator, OR gate, and Nchannel MOSFET to detect the presence of a stereo headset with a NCS2300 to baseband GPIO 1 GND OUT 6 MIC bias 2 MIC VDD 5 VDD NCS2300 voltage 2.2k 3 L detect 4 GND detect MIC GND detect L detect L M G R L L/R to audio R codec GND Figure 1. Typical Application Schematic NCS2300 2 MIC VDD VDD VDD 270k Reference voltage accurate within 5% 6 OUT 1M + VDD VDD 1M 1M GND 1 VDD 4 3 5 L detect GND detect VDD Figure 2. Block Diagram