NJM2174
AUDIO LINE AMPLIFIER with MUTE FUNCTION
s
GENERAL DESCRIPTION
The
NJM2174
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.
It is suitable for digital audio items with line out.
NJM2174V
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
s
PACKAGE OUTLINE
s
PIN CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
8
PIN FUNCTION
8. BIAS
1. GND
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
NJM2174V
s
BLOCK DIAGRAM
GND
1
2
3
4
5
6
7
BIAS
MUTE
14 V
+
13
NC
12
OUT-L
11
IN-L
10
NC
9
NC
8
BIAS
NC
OUT-R
MUTE1
MUTE2
MUTEC
IN-R
NJM2174
s
ABSOLUTE MAXIMUM RATINGS
RARAMETER
SYMBOL
+
Supply Voltage
V
Power Dissipaation
P
D
Operating Temperature Range
Topr
Storage Temperature Range
Tstg
RATINGS
7
300
-20 to +75
-40 to +125
(Ta=25°C)
UNIT
V
mW
°C
°C
+
s
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Voltage Range
Operating Current
Reference Voltage
Closed Loop Voltage Gain1
Closed Loop Voltage Gain2
Channel Gain Balance
Maximum Output Voltage
Total Harmonic Distortion
Output Noise Voltage
Mute Level
SYMBOL
V
+
(V =5V, V
IN
=-3dBV, R
L
=47kΩ, f=1kHz, Ta=25°C)
TEST CONDITION
No signal
No signal
f=100kHz
THD=0.1%
Rg=0Ω, A-Weighted
V
O
/V
IN
MIN.
4.5
-
2.0
2.5
-7.0
-0.5
3
-
-
-
70
V
RP
=-20dBV, Rg=0Ω
45
2.0
0
TYP.
5.0
2.5
2.3
3.5
-2.5
0
4
0.005
-95
-85
90
60
-
-
MAX.
5.5
4.5
2.6
4.5
-2.0
0.5
-
0.01
-88
-70
-
-
V
+
UNIT
V
mA
V
dB
dB
dB
dBV
%
dBV
dB
dB
dB
V
V
I
CC
V
REF
G
V
1
G
V
2
∆G
V
V
OM
THD
V
NO
MUTE
Channel Separation
CS
Supply Voltage Rejection
SVR
Ratio
High Level Input Voltage
V
IH
Low Level Input Voltage
V
IL
0.3
s
CONTROL TERMNAL
MUTE1(4pin)
L
L
H
H
MUTE2(5pin)
L
H
L
H
IC doesn’t output the signal.
IC doesn’t output the signal.
IC set up 3.5dB typ. voltage gain.
IC doesn’t output the signal.
STATUS
NJM2174
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
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