NJM2113
LOW VOLTAGE AUDIO POWER AMPLIFIER
■
GENERAL DESCRIPTION
The NJM2113 is an audio power amplifier designed for telephone
application, such as in speakerphones. Coupling capacitors to the
speaker are not required,as it has differential speaker outputs.
The closed loop gain is set with two external resistors.
A CD pin permit powering down with muting the input signal.
■
PACKAGE OUTLINE
■
FEATURES
●
Wide Operating Voltage
( 2~16V )
●
Low Operating Current
( 2.7mA Typ. )
●
CD Input to Power Down the IC with Mute
NJM2113E
●
Low Power-Down Operating Current ( 72μA Typ. )
( SOP8 )
●
Output Power Exceeds 250mW
( V
+
=6V,R
L
=32Ω )
●
Gain Adjustable
(G
VD
=0~43dB,Voice Band )
●
Package Outline
DMP8, DIP8, SOP8 JEDEC 150mil
SIP8, SSOP8, VSP8
●
Bipolar Technology
■
RECOMMENDED OPERATING CONDITIONS
●
Load Impedance
R
L
8~200Ω
●
Differential Gain
G
VD
0~43dB ( 5kHz bandwidth )
●
Input Voltage at CD
V
CD
0~V
+
Vdc
■
PIN CONFIGURATION
NJM2113R
( VSP8 )
NJM2113D
( DIP8 )
NJM2113M
( DMP8 )
NJM2113V
( SSOP8 )
NJM2113L
( SIP8 )
PIN FUNCTION
1. CD
2. V
REF
3. +V
IN
4.
–V
IN
5. V
OUT
1
+
6. V
7. GND
8. V
OUT
2
NJM2113D
NJM2113M
NJM2113E
NJM2113V
NJM2113R
NJM2113L
■
BLOCK DIAGRAM
Ver.2014-03-17
-1-
NJM2113
■
ABSOLUTE MAXIMUM RATINGS
( Ta=25˚C )
PARAMETER
Supply Voltage
Output Peak Current
Input Voltage Range
SYMBOL
+
V
I
OP
V
IN
RATINGS
+18
± 250
+
( 1~4pin )-0.3 to V +0.3
+
( 5,8pin )-0.3 to V +0.3
( when Power-Down )
( DIP8 ) 500
( note1 )
( SIP8 ) 800
( note1 )
( DMP8 ) 500 ( note2 )
( SSOP8 ) 360 ( note2 )
( VSP8 ) 320
( note1 )
( SOP8 ) 300
( note1 )
-20~+75
-40~+125
UNIT
V
mA
V
Power Dissipation
P
D
mW
Operating Temperature Range
Storage Temperature Range
( note1 ) Device itself.
( note2 ) Mounted on PC Board.
T
opr
T
stg
˚C
˚C
■
ELECTRICAL CHARACTERISTICS
( V
+
=6V,Ta=25˚C,unless otherwise specified )
PARAMETER
Operating Current
( no signal )
Open Loop Gain
Closed Loop Gain
Output Power
( note3 )
Total Harmonic Distortion
( f=1kHz )
Power Supply Rejection Ratio
+
+
( V =6.0V,ΔV =3.0V )
Mute Attenuation
Output Voltage
( R
f
=75kΩ,DC )
Output High Level
Output Low Level
Output DC Offset
Input Bias Current
Equivalent Resistance
CD Input Voltage H
CD Input Voltage L
CD Input Resistance
SYMBOL
I
CC
1
I
CC
2
I
CCD
A
V
1
A
V
2
P
O
1
P
O
2
P
O
3
THD1
THD2
THD3
PSRR1
PSRR2
PSRR3
MAT
V
O
1
V
O
2
V
O
3
V
OH
V
OL
ΔV
O
I
B
R
+IN
R
REF
V
CDH
V
CDL
R
CD
TEST CONDITION
V =3.0V,R
L
=∞,1pin=0.8V
+
V =16.0V,R
L
=∞,1pin=0.8V
+
V =3.0V,R
L
=∞,1pin=2.0V
Amplifier#A,f<100Hz
Amplifier#B,f=1kHz,R
L
=32Ω
+
V =3.0V,R
L
=16Ω,THD≤10
+
V =6.0V,R
L
=32Ω,THD≤10
+
V =12.0V,R
L
=100Ω,THD≤10 ( note4 )
+
V =6V,R
L
=32Ω,P
O
=125mW,G
VD
=34dB
+
V
≥3V,R
L
=8Ω,P
O
=20mW,G
VD
=12dB
+
V
≥12V,R
L
=32Ω,P
O
=200mW,G
VD
=34dB
C1=∞,C2=0.01μF,DC
C1=0.1μF,C2=0,f=1kHz
C1=1.0μF,C2=5.0μF,f=1kHz
f=1kHz~20kHz,1pin=2.0V
+
V =3.0V,R
L
=16Ω
+
V =6.0V
+
V =12.0V
+
I
OUT
=-75mA,V =2.0~16.0V
+
I
OUT
=75mA,V =2.0~16.0V
R
f
=75kΩ,R
L
=32Ω,5pin~8pin
4pin
3pin
2pin
1pin
1pin
V
CD
=16.0V,1pin
+
MIN.
-
-
-
77
-0.35
55
250
400
-
-
-
50
-
-
-
1.00
-
-
-
-
-30
-
100
18
2.0
0.0
50
TYP.
2.7
3.4
72
83
0
-
-
-
0.5
0.5
0.6
-
12
52
70
1.18
2.68
5.71
+
V -1.1
0.21
0
-30
150
25
-
-
75
MAX.
4.0
5.0
100
-
+0.35
-
-
-
1.0
-
-
-
-
-
-
1.25
-
-
-
-
+30
-200
220
40
+
V
0.8
175
UNIT
mA
mA
μA
dB
dB
mW
mW
mW
dB
dB
dB
dB
V
V
V
V
V
mV
nA
kΩ
kΩ
V
V
kΩ
( note3 ) NJM2113M,NJM2113V : At on PC Board
( note4 ) Not specified for NJM2113V,NJM2113R
-2-
Ver.2014-03-17
NJM2113
■
APPLICATION CIRCUIT
INPUT
Power-Down Control
( note )
1.
The NJM2113 is active mode during the CD terminal is Low level ( <0.8V ) and it
is stand-by mode during the CD terminal is High level ( >2.0V )
2.
C1 and C2 improve power supply rejection ratio.
In case of C1 is enough large,C2 is unnecessary.
3.
4.
5.
Please note that the C1 and C2 make slow power rise up to the NJM2113
regardless the external power supply condition.
Input current flow on the internal resistor shown in the equivalent circuit of CD
terminal.
No snubber resistor and capacitor are required normally.
But the snubber resistor and capacitor are required if the NJM2113 oscillates by
Condition of PCB layout,stray capacitor and speaker wire length.
Ver.2014-03-17
-3-
NJM2113
■
TYPICAL CHARACTERISTICS
-4-
Ver.2014-03-17
NJM2113
■
TYPICAL CHARACTERISTICS
Ver.2014-03-17
-5-
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