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Product attributes Property Value
Manufacturer Nisshinbo Micro Devices Inc.
Product Series
Packaging Tube |
Part Status Active
Type Class AB
Output Type 1-Channel (Mono)
Max Output Power x Channels @ Load 250mW x 1 @ 32Ohm
Voltage - Supply 2V ~ 6V
Features Standby
Mounting Type Surface Mount
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Supplier Device Package 8-DMP
Package / Case 8-SOIC (0.209", 5.30mm Width)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The NJM2149M is a mono Class AB audio amplifier from Nisshinbo, designed for low-power audio applications. Operating from 2V to 6V, it delivers 250mW into 32Ω loads. Features include a standby mode for power conservation and a wide operating temperature range. Housed in an 8-DMP package, it is ideal for portable radios, headphone amplifiers, intercoms, and alarm systems.

  • Standby mode reduces power consumption for battery-operated devices.
  • Wide supply voltage range (2V-6V) supports various power sources.
  • Compact 8-DMP package fits space-constrained designs.
  • Low output power suitable for headphone and line-level applications.

Portable Headphone Amplifiers

The NJM2149M's 250mW output into 32Ω is ideal for driving headphones in portable audio players, with low power consumption from a 2V-6V supply.

Battery-Powered Radios

Its standby feature extends battery life in AM/FM radios, while the wide voltage range accommodates aging batteries.

Intercom Systems

The compact 8-DMP package and reliable performance make it suitable for intercom audio amplification in residential or office systems.

Alarm Drivers

With standby capability, this amplifier can be used in alarm systems that require low quiescent current when not active.

Line Output Drivers

The NJM2149M can drive line-level outputs in audio equipment, providing sufficient gain with low distortion.

DIY Audio Projects

Hobbyists value its simple pinout and low voltage operation for custom audio circuits.

Q: What is the output power of the NJM2149M?
A: It delivers 250mW into a 32Ω load.
Q: What is the supply voltage range?
A: It operates from 2V to 6V.
Q: Does it have a standby feature?
A: Yes, it includes a standby mode for power saving.
Q: What package is available?
A: It comes in an 8-DMP (8-SOIC) surface-mount package.
Q: What is the operating temperature range?
A: It operates from -40°C to 85°C.
Base Product Number : NJM2149
250mW 8-DMP Audio Amplifier Class AB Headphone Amplifier Low Power Mono NJM2149 Portable Radio Standby Surface Mount
Q: What is the output power of the NJM2149M?
A: It delivers 250mW into a 32Ω load.
Q: What is the supply voltage range?
A: It operates from 2V to 6V.
Q: Does it have a standby feature?
A: Yes, it includes a standby mode for power saving.
Q: What package is available?
A: It comes in an 8-DMP (8-SOIC) surface-mount package.
Q: What is the operating temperature range?
A: It operates from -40°C to 85°C.