NTE7157
Integrated Circuit
Low Frequency Power Amplifier
Description:
The NTE7157 is an audio power integrated circuit in a 16Lead DIP type package with builtin two
channels designed for use in a portable radio cassette tape recorder with power ON/OFF switch.
Features:
D
High Power:
P
OUT
= 2.5W/Ch Typ (V
CC
= 9V, R
L
= 4
, f = 1kHz, THD = 10%)
P
OUT
= 3.0W/Ch Typ (V
CC
= 9V, R
L
= 3
, f = 1kHz, THD = 10%)
D
Voltage Gain:
G
V
= 45.0dB Typ (R
f
= 120
, f = 1kHz)
G
V
= 56.5dB Typ (R
f
= 0
, f = 1kHz)
D
Small Quiescent Current: I
CCQ
= 21mA Typ (V
CC
= 9V, V
IN
= 0)
D
Ripple Rejection Ratio: RR = 52dB Typ (V
CC
= 9V, f
ripple
= 100Hz, R
g
= 600
)
D
Crosstalk: CT = 50dB Typ (V
CC
= 9V, f = 1kHz, R
g
= 600
)
D
Output Noise Voltage: V
no
= 0.3mV
rms
Typ (V
CC
= 9V, R
g
= 10k
, BW = 20Hz to 20kHz)
D
StandBy Switch
D
Soft Clip
D
BuiltIn Thermal Shut Down Protection Circuit
D
Operating Supply Voltage Range: V
CC(opr)
= 5V to 12V (T
A
= +25
C)
D
Low Popping Noise at Power ON
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
DC Supply Voltage, V
CC
20V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Current (Peak/Ch), I
O(peak)
2.5A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Note 1), P
D
4.0W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature Range, T
opr
25
to +75
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note 1. Value for mounting on PC board.
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