NCS2300 Datasheet - ON Semiconductor

NCS2300 Headset Detection Interface

Pin Name Type 1 GND Power 2 MIC Output 3 GND_detect 4 L_detect 5 VDD 6 OUT Input Input Power Output Description GND is connected to the system ground. The open drain MIC output controls the bias on the MIC line. When the headset is not present, MIC is pulled low. When the headset is present.

NCS2300 Headset Detection Interface The NCS2300 is a compact and cost effective headset detection interface IC. It integrates a comparator, OR gate, and N channel MOSFET to detect the presence of a stereo headset with a microphone. Pull up resistors for the detection pins are internalized. A built in resistor divider provides the reference voltage for detecting the left audio channel. The logic low output of the OR gate indicates the headset has been connected properly. The NCS2.

NCS2300 Features

* Supply Voltage: 1.6 V to 2.75 V

* Low Quiescent Supply Current: 7.5 mA typical @ VDD = 1.8 V

* Integrated Resistors, Comparator, OR Gate, and N

* Channel MOSFET

* Space Saving UDFN6 Package

* These Devices are Pb

* Free, Halogen Free/BFR Free and

NCS2300-ONSemiconductor.pdf