NJM2783 Datasheet, PDF (1/13 Pages) New Japan Radio – Monaural Microphone Amplifier with ALC

NJM2783
Monaural Microphone Amplifier with ALC
"GENERAL DESCRIPTION
The NJM2783 is a monaural microphone amplifier with
auto level control function to avoid distortion due to clipping.
The voltage gain and the limit level are adjustable by
external resistors.
It is suitable for mini component audio system, home
audio system, karaoke and others.
"PACKAGE OUTLINE
" FEATURES
• Operating Voltage
• Monaural Microphone Amplifier
• Auto level control (ALC) function
(Adjustable the limit level
by external resistors
• Adjustable the voltage gain
by external resistors
• Additional Gain Amplifier
• Built-in Buffer Amplifier
• Low Equivalent Input Noise
• Carefully designed to reject RF noise
• Bipolar Technology
• Package Outline
+2.7 to +13.0V
200mVrms to 2Vrms)
+20 to +63dB (R_SENSE=OPEN)
0dB/+20dB switchable
1µVrms typ.
SSOP14
NJM2783V
" BLOCK DIAGRAM
IN
GAIN SW
INT
SENSE VREF
V+
GND
Detector
Bias
Microphone Amprifier
100k
Additional Gain
0dB/+20dB
Buffer Amplifier
100k
VCR
GAIN1
GAIN2
DET
OUT
BUFFIN BUFFGAIN BUFFOUT
Version 7.0E
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