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NJM2781
Monaural Microphone Amplifier
I GENERAL DESCRIPTION NJM2781 is a monaural microphone amplifier IC with a standby function, and can vary a voltage gain by adjusting an external resistor. Since the NJM2781 operates with a low voltage range of +2.7V to +4.5V and is available in tiny packages of TVSP8 and SSOP8, it is ideally suited for portable and handheld components. I PACKAGE OUTLINE
NJM2781RB1
NJM2781V
I FEATURES G Operating Voltage G Operating Current G Bipolar Technology G Package Outline I BLOCK DIAGRAM +2.7V to +4.5 V 1.8mA typ. 1µA max. (in Standby mode) TVSP8, SSOP8
NOISE
1
REG
GND
8 7 6 5
2
STBY
Reg
V+
3 4
OUT
IN+
IN-
I PIN FUNCTION
No. 1 8 1 2 4 5 3 4 SYMBOL NOISE REG STBY IN+ FUNCTION Noise Bypass Regulator Output Standby On/Off Non-Inverted Input No.
NJM2781 Datasheet
