JRC NJM2174V Datasheet
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AUDIO LINE AMPLIFIER with MUTE FUNCTION
GENERAL DESCRIPTION
■■■■
The
NJM2174
is a low voltage audio line amplifier designed f or
audio items.
Internal c losed loop voltage gain is suitable f or am plifier of sm all
line signal in digital audio items. It includes mute circuit
which realizes very low turn-noise at power on/off.
It is suitable for di
ital audio items with line out.
FEARTURES
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● Operating Voltage 4.5 to 5.5V
● Operating Current 2.5mA typ. at V
● Maximum Output Voltage 4dBV typ. at THD=0.1%
● Closed Loop Voltage Gain 3.5dB typ. at f=1kHz
2.5dB typ. at f=100kHz
● Mute Function -85dB typ.
● Supply Voltage Rejection Ratio 60dB typ.)
● Bipolar Technology
● Package Outline SSOP14
PIN CONFIGURATION
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1
2
3
4
5
6
7
NJM2174V
BLOCK DIAGRAM
■■■■
■■■■
+
=5V
GND
1
14
13
12
11
10
9
8
PIN FUNCTION
1. GND
2. NC
3. OUT-R
4. MUTE 1
5. MUTE 2
6. MUTE C
7. IN-R
14
V+
PACKAGE OUTLINE
8. BIAS
9. NC
10. NC
11. IN-L
12. OUT-L
13. NC
+
14. V
NJM2174
NJM2174V
NC
OUT-R
MUTE1
MUTE2
MUTEC
IN-R
2
3
4
5
MUTE
6
7
BIAS
13
12
11
10
9
8
NC
OUT-L
IN-L
NC
NC
BIAS
NJM2174
ABSOLUTE MAXIMUM RATINGS
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(Ta=25°C)
RARAMETER SYMBOL RATINGS UNIT
Supply Voltage V+ 7 V
Power Dissipaation PD 300 mW
Operating Temperature Range Topr -20 to +75
Storage Temperature Range Tstg -40 to +125
°C
°C
ELECTRICAL CHARACTERISTICS
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+
(V
=5V, VIN=-3dBV, RL=47kΩ, f=1kHz, Ta=25°C)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Voltage Range V+ 4.5 5.0 5.5 V
Operating Current ICC No signal - 2.5 4.5 mA
Reference Voltage V
No signal 2.0 2.3 2.6 V
REF
Closed Loop Voltage Gain1 GV1 2.5 3.5 4.5 dB
Closed Loop Voltage Gain2 GV2 f=100kHz -7.0 -2.5 -2.0 dB
Channel Gain Balance
∆G
V
-0.5 0 0.5 dB
Maximum Output Voltage VOM THD=0.1% 3 4 - dBV
Total Harmonic Distortion THD - 0.005 0.01 %
Output Noise Voltage VNO
Rg=0Ω, A-Weighted
- -95 -88 dBV
Mute Level MUTE VO/VIN - -85 -70 dB
Channel Separation CS 70 90 - dB
Supply Voltage Rejection
Ratio
SVR
V
=-20dBV, Rg=0Ω
RP
45 60 - dB
High Level Input Voltage VIH 2.0 - V+ V
Low Level Input Voltage VIL 0 - 0.3 V
CONTROL TERMNAL
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MUTE1(4pin) MUTE2(5pin) STATUS
L L IC doesn’t output the signal.
L H IC doesn’t output the signal.
H L IC set up 3.5dB typ. voltage gain.
H H IC doesn’t output the signal.
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