NJU8711V-TE2

Overview

The NJU8711V-TE2 is a switching driver for Class D amplifiers manufactured by Nisshinbo Micro Devices Inc. It features two-channel 1-bit audio signal inputs and includes BEEP and BPZ (Bipolar Zero) output circuits. The device converts 1-bit digital signals, such as PWM or PDM, into analog outputs using an external LC low-pass filter. Operating on CMOS technology with a supply voltage range of 2.0V to 3.6V, it achieves high power efficiency suitable for portable audio sets. The component is housed in an SSOP10 package.

Feature Summary

• Supports 2-channel 1-bit audio signal input
• Includes internal BPZ charger and beep function
• Enables standby mode with high impedance control

Applications

• Stereo OTL headphone amplifier circuits
• Single-channel BTL speaker amplifier configurations
• Portable audio devices requiring high power efficiency

Procurement Notes

Verify the specific ordering suffix TE2 against current manufacturer documentation to confirm packaging details. Confirm availability status directly with authorized distributors as product lifecycles may change. Ensure compatibility with existing system power supplies within the specified operating voltage range before procurement.

Selection Notes

Select this component for designs requiring efficient conversion of 1-bit digital audio to analog signals. Ensure the master clock input meets jitter requirements to maintain signal-to-noise ratio. Verify that the external LC filter components match the required cutoff frequencies for the target application bandwidth.

Part Context

This part belongs to the NJU8711 series of audio switching drivers. It is designed specifically for Class D amplifier applications where power efficiency is critical. The device integrates output control logic to manage audio, beep, and BPZ states through dedicated enable terminals.

Replacement Considerations

Check official cross-reference lists for direct replacements. Ensure substitute parts support the same SSOP10 package and 2.0V to 3.6V operating voltage range. Verify pinout compatibility for EN1, EN2, IN1, IN2, MCK, and BEEP terminals.

FAQ

How is the output state controlled?

The output state is selected by the logic levels applied to the EN1 and EN2 terminals, allowing selection between Standby, Audio Signal Output, BPZ Output, and Beep Signal Output.

What type of input signal does the NJU8711 accept?

It accepts 1-bit digital audio signals, such as PWM or PDM, which are synchronized by the Master Clock (MCK) input.