NJU7181RB1-TE1

Audio Special Purpose Overview

The NJU7181RB1-TE1 is a signal level sensor system IC designed for audio applications. It detects the presence of an audio signal and outputs a High flag to external equipment, such as microprocessors. The device incorporates a delay circuit that maintains the output flag after the audio signal ceases; this holding time is adjustable via an external capacitor connected to Pin 5. Key electrical parameters include an operating voltage range of 0.9V to 5.5V and a typical operating current (Icc) of 55µA.

Audio Special Purpose Feature Summary

• Operating Voltage: 0.9V to 5.5V
• Low Operating Current: 55µA typ. (at VCC=3V)
• Adjustable Delay Time via External Capacitor
• CMOS Technology

Audio Special Purpose Applications

• Power saving for battery operated devices
• Muting application
• Memory saving for recording devices
• Half-duplex transmission application

Audio Special Purpose Procurement Notes

Verify the package type matches the design requirements. The NJU7181 series is available in MSOP8 (TVSP8) outlines. Confirm the ordering suffix corresponds to the desired tape and reel quantity. Note that specific input sensitivity settings are determined by internal thresholds and external components, but datasheet-specific minimum resistor values like '-60dBV' are not explicitly defined as a hard constraint in the general overview without referencing the specific application circuit diagram.