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

	Consumer
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	DIP8,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)

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Stand-by	Mute	Fine Tune Sensitivity

Functional Description

Quality &
Packages

Product Name	Package	Marking	Reliability
NJM2149D	DIP8	-	NJM-t
NJM2149M	DMP8	-	NJM-1-s-fr
NJM2149V	SSOP8	-	NJM-1-s-fr
NJM2149RB1	MSOP8(TVSP8)	-	NJM-1-s-fr
NJM2149R	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.