NTE7053
Integrated Circuit
22W Bridge–Stereo Amplifier
for Car Radio
Description:
The NTE7053 is an audio power amplifier is a 11–Lead Staggered SIP type package designed for car
radio applications.
Thanks to the fully complementary PNP/NPN output configuration, the high performance of this de-
vice is obtained without bootstrap capacitors.
A delay turn–on mute circuit eliminates audible ON/OFF noise, and a novel short circuit protection
system prevents spurious intervention with highly inductive loads.
Features:
Protections:
D
D
D
D
D
D
D
D
Few External Components
No Boucherot Cells
No Bootstrap Capacitors
High Output Power
No Switch ON/OFF Noise
Very Low Stand–by Current
Fixed Gain (30dB Stereo)
Programmable Turn–On Delay
D
Output AC–DC Short Circuit to GND and to
Supply Voltage
D
Very Inductive Loads
D
Loudspeaker Protection
D
Overrating Chip Temperature
D
Load Dump Voltage
D
Fortuitous Open Ground
Absolute Maximum Ratings:
Operating Supply Voltage, V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
DC Supply Voltage, V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Peak Supply Voltage (for t = 50ms), V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Output Peak Current (Non–Repetitive for t = 100µs), I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A
Output Peak Current (Repetitive Frequency > 10Hz), I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A
Power Dissipation (T
C
= +85°C), P
tot
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36W
Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Maximum Thermal Resistance, Junction–to–Case, R
thJC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8°C/W
Electrical Characteristics:
(T
A
= +25°C, V
S
= 14.4V, f = 1kHz unless otherwise specified)
Parameter
Supply Voltage Range
Total Quiescent Drain Current
Stand–By Attenuation
Stand–By Current
Thermal Shut–Down Junction Temperature
Stereo
Output Power (Each Channel)
P
O
d = 10%
R
L
= 2Ω
R
L
= 3.2Ω
R
L
= 4Ω
d = 10%,
V
S
= 13.2V
R
L
= 2Ω
R
L
= 3.2Ω
R
L
= 4Ω
Distortion
Supply Voltage Rejection
Crosstalk
Input Resistance
Voltage Gain
Voltage Gain Match
Input Noise Voltage
Bridge
Output Power (Each Channel)
P
O
d = 10%
d = 10%,
V
S
= 13.2V
Distortion
Output Offset Voltage
Supply Voltage Rejection
Input Resistance
Voltage Gain
Input Noise Voltage
d
V
OS
SVR
R
I
G
V
E
IN
Note 1
R
S
= 50Ω
R
S
= 10kΩ
R
S
= 10kΩ,
f = 100Hz
C3 = 22µF
C3 = 100µF
R
L
= 3.2Ω
R
L
= 4Ω
R
L
= 3.2Ω
R
L
= 4Ω
16
–
–
–
–
–
45
–
–
33
–
–
22
20
19
17.5
–
–
50
57
50
35
2.7
3.2
–
–
–
–
1
250
–
–
–
37
–
–
W
W
W
W
%
mV
dB
dB
kΩ
dB
µV
µV
d
SVR
CT
R
I
G
V
G
V
E
IN
Note 1
R
S
= 50Ω
R
S
= 10kΩ
P
O
= 0.1W to 4W, R
L
= 3.2Ω
R
S
= 10kΩ,
f = 100Hz
f = 1kHz
f = 10kHz
C3 = 22µF
C3 = 100µF
–
7
–
–
–
–
–
45
–
45
–
30
27
–
–
–
11
8
8.5
9
6.5
5.5
–
50
57
55
50
50
29
–
2
2.7
–
–
–
–
–
–
0.5
–
–
–
–
–
31
1
–
7
W
W
W
W
W
W
%
dB
dB
dB
dB
kΩ
dB
dB
µV
µV
Symbol
V
S
I
d
A
SB
I
SB
T
sd
Stereo Configuration
Test Conditions
Min Typ Max Unit
8
–
60
–
–
–
–
80
–
150
18
120
–
100
–
V
mA
dB
µA
°C
P
O
= 0.1W to 4W, R
L
= 4Ω
Note 1. 22Hz to 22kHz
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