NTE7102
Integrated Circuit
Dual Audio Power Amplifier,
5.5W/Ch (20W BTL)
Description:
The NTE7102 is a class B dual audio power amplifier in a 14Lead DIP type package designed for
use in a music center and a radio cassette player.
Features:
D
High Output Power:
20W Typ @ V
CC
= 18V, R
L
= 8
(BTL)
5.5W/Ch Typ @ V
CC
= 18V, R
L
= 8
7W/Ch Typ @ V
CC
= 15V, R
L
= 4
5.7W/Ch Typ @ V
CC
= 12V, R
L
= 3
4.6W/Ch Typ @ V
CC
= 12V, R
L
= 4
D
Wide Operating Voltage Range: V
CC
= 6 to 20V
D
Low Quiescent Current: I
CC
= 23mA Typ @ V
CC
= 15V
D
Low Noise: N
L
= 0.25mV
rms
Typ
D
High Supply Voltage Rejection: SVR = 55dB Typ
D
No Shock Noise at Power Supply Switch ON and OFF
D
Soft Clipping Wave Form
D
BuiltIn Thermal Shutdown Circuit
D
Low Thermal Resistance: R
JC
= 3
C/W
D
Few External Components
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Supply Voltage,
No Signal, V
CC1
28V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating, V
CC2
25V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Powewr Dissipation (100 x 100 x 2mm Al Heat Sink), P
D
14W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
20
to +70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
40
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Operating Conditions: (T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Unit
Supply Voltage
V
CC
6.0
12.15
20.0
V
Load Impedance (Dual)
R
L
3
4
8
Load Impedance (BTL)
R
L
8
Voltage Gain
A
38
48
dB
Electrical Characteristics: (V
CC
= 15V, R
L
= 4
, f = 1kHz, T
A
= +25
C, 100 x 100 x 2mm Al
panel Heat Sink unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Circuit Current
I
CC
No Signal
23
36
mA
Voltage Gain
A
46
48
50
dB
Output Power
P
O
THD = 10%
V
CC
= 12V, R
L
= 4
4.6
W
V
CC
= 12V, R
L
= 3
5.7
W
V
CC
= 15V, R
L
= 4
6.0
7.0
W
V
CC
= 18V, R
L
= 8
5.5
W
THD = 10%, BTL, V
CC
= 18V, R
L
= 4
20
W
Total Harmonic Distortion
THD
P
O
= 1W
0.2
1.0
%
Output Noise Voltage
NL
DIN AUDIO, R
G
= 0
0.26
0.6
mV
rms
Crosstalk
CT
P
O
= 2W, other Ch, R
G
= 0
45
55
dB
Channel Balance
Ch. B
P
O
= 4W
1
0
+1
dB
Ripple Rejection
SVR
R
G
= 0, f = 100Hz, V = 0.3mV
rms
45
55
dB
Input Impedance
Z
in
20
30
k
V
CC
Pin Connection Diagram
(Front View)
Input 2
Output 1
Bootstrap 2
Filter
Output 2
Compensation 2
NFB 2
GND (Input)
Bootstrap 1
Compensation 1
13
12
11
10
9
8
7
NFB 1
6
5
Input 1
4
3
2
1
GND (Output)
14
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