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NJM2149 Series
Low Voltage Audio Power Amplifier

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Description

The NJM2149 is an audio power amplifier designed for telephone applications. No external coupling capacitors are required because of the differential outputs. The closed loop gain is adjusted by two external resistors，and a CD pin permit powering down with muting the input signal. The NJM2149 improves the turn noise reduction in switching Power Down mode and external high band noise reduction，compared with NJM2135. It is suitable for portable telephone ，wireless telephone，button telephone，and other speaker amplifier applications.

Spec

Standard
Supply Voltage 2V to 6V
Channel BTL 1ch.
Output Power / Po Min. 250mW
Output Power / V+ 6V
Output Power / RL 32 ohm
Stand-by Yes
Mute Yes
Operating Current 2.2mA typ. at V+=3V
Wide Operating Temperature -40°C to 85°C
Junction Temp. 125°C
Package DMP8,SSOP8,MSOP8(TVSP8),MSOP8(VSP8)
Features Low Voltage Operation
Note 1 Gain Range (GVD=0-43dB，Voise Band)
Note 2 Supply Current in Power Down Mode (0.1µA typ)

Download Datasheet

Protections / Functions

Stand-by Mute Fine Tune Sensitivity

Functional Description

Functional Description

Search for similar products under conditions below.

Category:Audio Amplifiers

Sub Ctegory Power Amp./ Headphone Amp.
Channel(ch) 1
Supply Voltage
min(V)		 2
Supply Voltage
max(V)		 6
Output Power
Po typ		 250mW(min.)

Technical Documents

Quality & Packages

Product Name Compatibility Package Marking Reliability
NJM2149M
  • gradeConsumer
 DMP8 - NJM-1-s-fr
NJM2149V
  • gradeConsumer
 SSOP8 - NJM-1-s-fr
NJM2149RB1
  • gradeConsumer
 MSOP8(TVSP8) - NJM-1-s-fr
NJM2149R
  • gradeConsumer
 MSOP8(VSP8) - NJM-1-s-fr
  • Refer to the datasheets for the details on the product.
  • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

Buy / Contact

  • Purchase, Request for samples and documents
    Sales are made through distributors. Please contact your local distributors for any sales-related inquiry such as price.
  • Available from 1 piece!
    Our electronic device products are available through our authorized online distributors.
  • Technical Support
NJM2149 Series