NJM2113
-1-
Ver.2011-12-22
LOW VOLTAGE AUDIO POWER AMPLIFIER
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
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.
■ FEATURES
● Wide Operating Voltage ( 2~16V )
● Low Operating Current ( 2.7mA Typ. )
● CD Input to Power Down the IC with Mute
● Low Power-Down Operating Current ( 72µA Typ. )
● 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
■ BLOCK DIAGRAM
NJM2113D
NJM2113M
NJM2113E
NJM2113V
NJM2113R
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
NJM2113L
NJM2113V
( SSOP8 )
NJM2113D
( DIP8 )
NJM2113E
( SOP8 )
NJM2113M
( DMP8 )
NJM2113L
( SIP8 )
NJM2113R
( VSP8 )
NJM2113
- 2 -
Ver.2011-12-22
■ ABSOLUTE MAXIMUM RATINGS
( Ta=25ûC )
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V
+
+18 V
Output Peak Current I
OP
± 250 mA
Input Voltage Range V
IN
( 1~4pin )-0.3 to V
+
+0.3
( 5,8pin )-0.3 to V
+
+0.3
( when Power-Down )
V
Power Dissipation P
D
( DIP8 ) 500
( SIP8 ) 800
( DMP8 ) 500 ( note1 )
( SSOP8 ) 360 ( note1 )
( VSP8 ) 320
( SOP8 ) 300
mW
Operating TSOPerature Range T
opr
-20~+75 ûC
Storage TSOPerature Range T
stg
-40~+125 ûC
( note1 ) Mounted on PC Board
■ ELECTRICAL CHARACTERISTICS
( V
+
=6V,Ta=25ûC,unless otherwise specified )
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Current I
CC
1 V
+
=3.0V,R
L
=∞,1pin=0.8V - 2.7 4.0 mA
( no signal ) I
CC
2 V
+
=16.0V,R
L
=∞,1pin=0.8V - 3.4 5.0 mA
I
CCD
V
+
=3.0V,R
L
=∞,1pin=2.0V - 72 100 µA
Open Loop Gain A
V
1 Amplifier#A,f<100Hz 77 83 - dB
Closed Loop Gain A
V
2 Amplifier#B,f=1kHz,R
L
=32Ω -0.35 0 +0.35 dB
Output Power P
O
1 V
+
=3.0V,R
L
=16Ω,THD≤10% 55 - - mW
( note2 ) P
O
2 V
+
=6.0V,R
L
=32Ω,THD≤10% 250 - - mW
P
O
3 V
+
=12.0V,R
L
=100Ω,THD≤10% ( note3 ) 400 - - mW
Total Harmonic Distortion THD1 V
+
=6V,R
L
=32Ω,P
O
=125mW,G
VD
=34dB - 0.5 1.0 %
( f=1kHz ) THD2 V
+
≥3V,R
L
=8Ω,P
O
=20mW,G
VD
=12dB - 0.5 - %
THD3 V
+
≥12V,R
L
=32Ω,P
O
=200mW,G
VD
=34dB - 0.6 - %
Power Supply Rejection Ratio PSRR1 C1=∞,C2=0.01µF,DC 50 - - dB
( V
+
=6.0V,∆V
+
=3.0V ) PSRR2 C1=0.1µF,C2=0,f=1kHz - 12 - dB
PSRR3 C1=1.0µF,C2=5.0µF,f=1kHz - 52 - dB
Mute Attenuation MAT f=1kHz~20kHz,1pin=2.0V - 70 - dB
Output Voltage V
O
1 V
+
=3.0V,R
L
=16Ω 1.00 1.18 1.25 V
( R
f
=75kΩ,DC ) V
O
2 V
+
=6.0V - 2.68 - V
V
O
3 V
+
=12.0V - 5.71 - V
Output High Level V
OH
I
OUT
=-75mA,V
+
=2.0~16.0V - V
+
-1.1 - V
Output Low Level V
OL
I
OUT
=75mA,V
+
=2.0~16.0V - 0.21 - V
Output DC Offset ∆V
O
R
f
=75kΩ,R
L
=32Ω,5pin~8pin -30 0 +30 mV
Input Bias Current I
B
4pin - -30 -200 nA
Equivalent Resistance R
+IN
3pin 100 150 220 kΩ
R
REF
2pin 18 25 40 kΩ
CD Input Voltage H V
CDH
1pin 2.0 - V
+
V
CD Input Voltage L V
CDL
1pin 0.0 - 0.8 V
CD Input Resistance R
CD
V
CD
=16.0V,1pin 50 75 175 kΩ
( note2 ) NJM2113M,NJM2113V : At on PC Board
( note3 ) Not specified for NJM2113V,NJM2113R
NJM2113
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3
-
Ver.2011-12-22
INPUT
Power-Down Control
■ APPLICATION CIRCUIT
( 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. Please note that the C1 and C2 make slow power rise up to the NJM2113
regardless the external power supply condition.
4. Input current flow on the internal resistor shown in the equivalent circuit of CD
terminal.
5. 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.
NJM2113
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Ver.2011-12-22
■ TYPICAL CHARACTERISTICS
NJM2113
-
5
-
Ver.2011-12-22
■ TYPICAL CHARACTERISTICS
NJM2113
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6
-
Ver.2011-12-22
■ TYPICAL CHARACTERISTICS
[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.
