NJM2790
AUDIO LINE AMPLIFIER with MUTE FUNCTION
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GENERAL DESCRIPTION
The
NJM2790
is a low voltage audio line amplifier designed
for audio items.
Internal closed loop voltage gain is suitable for amplifier of
small line signal in digital audio items. It includes mute circuit
which realizes very low turn-noise at power on/off.
The
NJM2790
is 6.5dB closed loop voltage gain, another
version of 3.5dB is the
NJM2174.
It is suitable for digital audio items with line out.
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PACKAGE OUTLINE
NJM2790V
s
FEARTURES
q
Operating Voltage
q
Operating Current
q
Maximum Output Voltage
q
Closed Loop Voltage Gain
4.5 to 5.5V
2.5mA typ. at V
+
=5V
4dBV typ. at THD=0.1%
3.5dB typ. at f=1kHz
2.5dB typ. at f=100kHz
q
Mute Function
-85dB typ.
q
Supply Voltage Rejection Ratio 60dB typ.
q
Bipolar Technology
q
Package Outline
SSOP14
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PIN CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PIN FUNCTION
1. GND
8. BIAS
9. NC
2. NC
10. NC
3. OUT-R
11. IN-L
4. MUTE 1
12. OUT-L
5. MUTE 2
13. NC
6. MUTE C
14. V
+
7. IN-R
NJM2790V
s
BLOCK DIAGRAM
GND 1
NC 2
OUT-R 3
MUTE1 4
MUTE2 5
MUTE
MUTEC 6
IN-R 7
BIAS
14 V
+
13 NC
12 OUT-L
11 IN-L
10 NC
9 NC
8 BIAS
-1-
1
2
3
