NJW1105
-1-
DUAL AUDIO POWER AMPLIFIER
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJW1105 is a dual audio amplifier which supplies 2.4W
(1.2W/channel) to 8Ω loads at 5V.Its features are wide operating
voltage range from 4V to 12V and low consumption output by Bi-MOS
technology.
The NJW1105 is suitable for speaker amplifier required high output
power, such as personal computers, camcorders, and others.
It includes thermally protected and mute on/off circuit.
■ FEATURES
● Operating Voltage ( V
+
=4V~12V )
● Output Power ( 1.2W/ch at V
+
=5V,R
L
=8Ω )
● Supply Current ( 35mA MAX. )
● Supply Current on Mute ( 3.5mA MAX. )
● Bi-MOS Technology
● Package Outline DIP16, SSOP20-F1
■ BLOCK DIAGRAM
( Package DIP16 )
NJW1105D NJW1105V
NJW1105
- 2 -
■ ABSOLUTE MAXIMUM RATINGS
( Ta=25ûC )
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V
+
15 V
Operating Current I
O
1 A
Mute Terminal Current I
M
1.0 mA
Power Dissipation P
D
( SSOP20 ) 0.75
( DIP16 ) 1.9 W
Operating Temperature Range T
opr
-40~+85 ûC
Storage Temperature Range T
stg
-40~+150 ûC
■ ELECTRICAL CHARACTERISTICS
( V
+
=5.0V,Ta=25ûC )
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
[ ALL ]
Operating Supply Voltage Range V
+
4 5 12 V
Mute OFF Current Dissipation I
CC
1 V
M
=4.2V,V
IN
=2.5V - 20 35 mA
Mute ON Current Dissipation I
CC
2 V
M
=0V,V
IN
=2.5V - 2 3.5 mA
[ POWER AMPLIFIER ]
Output Offset Voltage ∆V
O
R
L
=8Ω -50 - 50 mV
Input Bias Current I
B
- - 300 nA
Output Power P
O
1 THD=10%,f=1kHz,R
L
=8Ω - 1.2 - W
P
O
2 THD=10%,f=1kHz,R
L
=8Ω,V
+
=7V - 2.5 - W
Total Harmonic Distortion THD R
L
=8Ω,P
O
=800mW,f=1kHz - 0.35 -
%
Power Supply Rejection Ratio PSRR f=1kHz - 45 - dB
Voltage Gain A
V
AMP2,AMP3,R
L
=2kΩ,V
IN
=2.5V 35 50 - dB
[ BUFFER AMPLIFIER ]
Input Output Potential Difference V
BO
-30 0 30 mA
Input Voltage Range V
BI
1.5 2.5 3.5 V
Output Voltage Range ∆V
BO
I
L
=-5mA,I
L
=+5mA - - -50 mA
[ MUTING ]
Mute OFF Voltage V
MH
3.5 4.2 - V
Mute ON Voltage V
ML
- 0.8 1.0 V
Mute Sink Current I
M
V
M
=5V 70 100 130 µA
NJW1105
-
3
-
■ PIN CONFIGURATION
DIP1
6
1. V
+
9. Vin2 (+)
2. MUTE 10. Vin2 (-)
3. OUT1 11. OUT3
4. GND 12. GND
5. GND 13. GND
6. OUT2 14. OUT4
7. Vin1 (-) 15. VBout
8. Vin1 (+) 16. VBin
11
12
1
3
1
4
15
1
6
1
7
1
8
1
9
20
SS
O
P-20
1. V
+
11. Vin2(+)
2. V
+
12. Vin2(-)
3. MUTE 13. OUT3
4. OUT1 14. GND
5. GND 15. GND
6. GND 16. OUT4
7. OUT2 17. NC
8. Vin1(-) 18. NC
9. Vin1(+) 19. VBout
10. NC 20. VBin
NJW1105
- 4 -
■ TERMINAL EXPLANATION
PIN NO.
SSOP-20 DIP-16
PIN
NAME FUNCTION INSIDE EQUIVALENT CIRCUIT
5
6
14
15
4
5
12
13
GND Recommend expanding the island in
order to heat radiation properties.
16 14 OUT4 Output terminal of AMP.4.
OUT4 signal is opposite phase against
OUT3.
10
17
18
- NC Non-connection terminal.
Recommend connecting to GND.
NJW1105
-
5
-
■ TERMINAL EXPLANATION
PIN NO.
SSOP-20 DIP-16
PIN
NAME FUNCTION INSIDE EQUIVALENT CIRCUIT
19 15 VBout An buffer amplifier output.
20 16 VBin An buffer amplifier input.
1
2
1 V
CC
Supply Voltage.
3 2 MUTE A mute input.
Pull down by 50kΩ (TYP) resistor.
NJW1105
-
6
-
■ TERMINAL EXPLANATION
PIN NO.
SSOP-20 DIP-16
PIN
NAME FUNCTION INSIDE EQUIVALENT CIRCUIT
4 3 OUT1 Output terminal of AMP.1.
OUT1 signal is opposite phase against
OUT2.
7 6 OUT2 Output terminal of AMP.2.
8 7 Vin1(-) Inverting input terminal of AMP.2.
9 8 Vin1(+) Non-inverting input terminal of AMP.2.
NJW1105
-7-
■ TERMINAL EXPLANATION
PIN NO.
SSOP-20 DIP-16
PIN
NAME FUNCTION INSIDE EQUIVALENT CIRCUIT
11 9 Vin2(+) Inverting input terminal of AMP.3.
12 10 Vin2(-) Non-inverting input terminal of AMP.3.
13 11 OUT3 Output terminal of AMP.3.
NJW1105
-
8
-
■ APPLICATION CIRCUIT
( 1 ) BTL
NJW1105
-
9
-
■ TYPICAL CHARACTERISTICS
NJW1105
- 1
0
-
■ 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.
