NJM2173A Ver la hoja de datos (PDF) - Japan Radio Corporation
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NJM2173A Datasheet PDF : 4 Pages
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NJM2173A
LOW VOLTAGE MICROPHONE AMPLIFIER for PORTABLE AUDIO
s GENERAL DESCRIPTION
The NJM2173 is a low voltage microphone amplifier designed
for portable audio items.
It includes standby, two-type gain selector, and power ripple
rejection adjustment circuit. It realizes very low turn-noise at
standby mode.
It is suitable for portable Mini-Disc, portable Compact-Disc, and
other microphone amplifier application.
s PACKAGE OUTLINE
NJM2173V
s FEATURES
q Operating Voltage Range
q Operating Current
q Supply Current in Standby Mode
q Maximum Output Voltage
q Internal Two-type Gain Select Function
q Internal Standby Function
q Power Ripple Rejection Terminal
q Bipolar Technology
q Package Outline
2.7 to 4.5V
2.2mA typ. at V+=2.7V
1µA max.
-1.5dBV typ. at THD=0.1%
13dB typ./ 29dB typ.
95dB typ. at Gv=13dB
SSOP14
s PIN CONFIGURATION
1
14
2
13
3
12
4
11
5
10
6
9
7
8
NJM2173V
s BLOCK DIAGRAM
PIN FUNCTION
1. OUT 1
8. V+
2. DC CUT 1 9. STBY
3. IN 1
4. MIC V+1
10. Gv
11. MIC V+2
5. REG
12. IN 2
6. NOISE
13. DC CUT 2
7. GND
14. OUT 2
OUT1 1
DC CUT1 2
AMP1
IN1 3
M IC V+1 4
AMP2
14 OUT2
13 DC CUT2
12 IN2
11 M IC V+2
REG 5
Gv 10 Gv
NOISE 6
GND 7
REG
9 STBY
8 V+
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