NJM2113D

Overview

The NJM2113D is a low voltage audio power amplifier designed for telephone applications, such as speakerphones. It features differential speaker outputs that eliminate the need for coupling capacitors to the speaker. The device operates on a wide supply voltage range of 2V to 16V with a typical operating current of 2.7mA. It includes a CD pin for powering down the IC while muting the input signal, reducing power-down current to 72μA typ. Output power exceeds 250mW at V+=6V and RL=32Ω. The closed loop gain is adjustable via two external resistors.

Feature Summary

• Designed for telephone applications like speakerphones with differential speaker outputs eliminating coupling capacitors
• Features a CD pin for power down control with mute function
• Adjustable closed loop gain set by two external resistors

Applications

• Telephone speakerphones
• Low voltage audio power amplification

Procurement Notes

Verify the NRND status before design-in. Confirm package compatibility with existing PCB footprints. Check latest datasheet revisions for any parameter updates. Ensure supply voltage and load impedance match application requirements. Validate thermal performance under maximum operating conditions.

Selection Notes

Select based on required output power and supply voltage constraints. Consider the differential output configuration for capacitor-less speaker driving. Evaluate the power-down current consumption if battery operation is critical. Verify gain adjustment requirements against available external resistor values.

Part Context

The NJM2113 series includes variants in DMP8, DIP8, SOP8 JEDEC 150mil, SIP8, SSOP8, and VSP8 packages. The NJM2113D specifically refers to the DIP8 package version. This component belongs to Nisshinbo Micro Devices' low voltage audio amplifier lineup, utilizing bipolar technology.

Replacement Considerations

NJM2113M (DMP8), NJM2113E (SOP8), NJM2113V (SSOP8), NJM2113R (VSP8), NJM2113L (SIP8). These are package variations of the same functional device.