NJM2070D

Overview

The NJM2070D is a Class-AB audio power amplifier manufactured by Nisshinbo Micro Devices. It delivers 600 mW of output power into a 4 Ohm load with a Total Harmonic Distortion plus Noise (THD+N) of 0.25%. The device operates on a single power supply ranging from 1.8 V to 15 V and draws a typical operating current of 4 mA. Key electrical parameters include a gain of 44 dB, an input bias current of 200 nA, and a maximum output current of 1 A. It features differential input and single-ended output configurations. The component is housed in an 8-DMP surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Supports low-voltage single-supply operation for portable applications
• Features differential input configuration for improved noise immunity
• Designed with pop-noise suppression circuitry to prevent speaker damage during power transitions

Applications

• Portable audio devices requiring low voltage operation
• Speaker protection circuits
• Low-power audio amplification systems

Procurement Notes

Verify the specific suffix 'D' indicates the DIP-8 through-hole package variant, distinct from the 'M' surface-mount version. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as datasheet specifications may vary by production batch. Ensure the intended application falls within the specified single-supply voltage and thermal limits.

Selection Notes

Select this component when a monaural Class-AB amplifier is required for single-supply environments. It is suitable for driving low-impedance loads such as 4 Ohm speakers. Consider the 8-DIP package availability if through-hole assembly is mandated. Evaluate the 4 mA quiescent current against battery life requirements for portable designs.

Part Context

The NJM2070 belongs to the NJM2070 series of audio amplifiers from Nisshinbo Micro Devices. This series focuses on low-voltage, high-efficiency performance for consumer electronics. The D-package variant specifically provides a dual-in-line form factor, distinguishing it from the surface-mount options available within the same functional family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.