NTE7157
Integrated Circuit
Low Frequency Power Amplifier
Description:
The NTE7157 is an audio power integrated circuit in a 16鈥揕ead DIP type package with built鈥搃n 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鈩? f = 1kHz, THD = 10%)
P
OUT
= 3.0W/Ch Typ (V
CC
= 9V, R
L
= 3鈩? f = 1kHz, THD = 10%)
D
Voltage Gain:
G
V
= 45.0dB Typ (R
f
= 120鈩? f = 1kHz)
G
V
= 56.5dB Typ (R
f
= 0鈩? f = 1kHz)
D
Small Quiescent Current: I
CCQ
= 21mA Typ (V
CC
= 9V, V
IN
= 0)
D
Ripple Rejection Ratio: RR = 鈥?2dB Typ (V
CC
= 9V, f
ripple
= 100Hz, R
g
= 600鈩?
D
Crosstalk: CT = 鈥?0dB Typ (V
CC
= 9V, f = 1kHz, R
g
= 600鈩?
D
Output Noise Voltage: V
no
= 0.3mV
rms
Typ (V
CC
= 9V, R
g
= 10k鈩? BW = 20Hz to 20kHz)
D
Stand鈥揃y Switch
D
Soft Clip
D
Built鈥揑n Thermal Shut Down Protection Circuit
D
Operating Supply Voltage Range: V
CC(opr)
= 5V to 12V (T
A
= +25擄C)
D
Low Popping Noise at Power ON
Absolute Maximum Ratings:
(T
A
= +25擄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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +75擄C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Note 1. Value for mounting on PC board.
1
2
