NTE NTE7155

NTE7155
Integrated Circuit
Dual Low–Voltage Power Amplifier
Description:
The NTE7155 is a monolithic integrated circuit in an 8–Lead DIP type package designed for use as
a dual audio power amplifier in portable cassette players and radios.
Features:
D Supply Voltage Down To 1.8V
D Low Crossover Distortion
D Low Quiescent Current
D Bridge or Stereo Configuration
Absolute Maximum Ratings:
Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15V
Peak Output Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
Total Power Dissipation, PD
TA = +50°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
TC = +50°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4W
Operating Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Thermal Resistance, Junction–to–Ambient, RthJA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Thermal Resistance, Junction–to–Case (Pin4), RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W
Electrical Charactgeristics: (VS = 6V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Stereo
Supply Voltage
VS
1.8
–
15
V
Quiescent Output Voltage
VO
–
2.7
–
V
–
1.2
–
V
VS = 3V
Quiescent Drain Current
ID
–
6
9
mA
Input Bias Current
IB
–
100
–
nA
Electrical Charactgeristics (Cont’d): (VS = 6V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
VS = 9V
–
300
–
mW
VS = 6V
90
120
–
mW
VS = 4.5V
–
60
–
mW
VS = 3V
15
20
–
mW
VS = 2V
–
5
–
mW
RL = 16Ω
VS = 6V
170
220
–
mW
RL = 8Ω
VS = 9V
–
1000
–
mW
VS = 6V
300
380
–
mW
VS = 6V
450
650
–
mW
VS = 4.5V
–
320
–
mW
VS = 3V
–
110
–
mW
RL = 32Ω, PO = 40mW
–
0.2
–
%
RL = 16Ω, PO = 75mW
–
0.2
–
%
RL = 8Ω, PO = 150mW
–
0.2
–
%
f = 1kHz
36
39
41
dB
–
–
±1
dB
Stereo (Cont’d)
Output Power (Each Channel)
(f = 1kHz, d = 10%)
PO
RL = 32Ω
RL = 4Ω
Distortion (f = 1kHz)
d
Closed Loop Voltage Gain
GV
Channel Balance
∆GV
Input Resistance
RI
Total Input Noise
eN
Supply Voltage Rejection
Channel Separation
SVR
CS
f = 1kHz
100
–
–
kΩ
B = Curve A
–
2.0
–
µV
B = 22Hz to 22kHz
–
2.5
–
µV
f = 100Hz, C1 = C2 = 100µF
24
30
–
dB
f = 1kHz
–
50
–
dB
1.8
–
15
V
RL = ∞
–
6
9
mA
RL = 8Ω
–
–
±50
mV
–
100
–
nA
VS = 9V
–
1000
–
mW
VS = 6V
320
400
–
mW
VS = 4.5V
–
200
–
mW
VS = 3V
50
65
–
mW
VS = 2V
–
8
–
mW
VS = 9V
–
2000
–
mW
VS = 6V
–
800
–
mW
VS = 3V
–
120
–
mW
VS = 6V
900
1350
–
mW
VS = 4.5V
–
700
–
mW
VS = 3V
–
220
–
mW
VS = 4.5V
–
1000
–
mW
VS = 3V
200
350
–
mW
VS = 2V
–
80
–
mW
RS = 10kΩ
Bridge
Supply Voltage
Quiescent Drain Current
Output Offset Voltage (Between Outputs)
VS
ID
VOS
Input Bias Current
IB
Output Power (f = 1kHz, d = 10%)
PO
RL = 32Ω
RL = 16Ω
RL = 8Ω
RL = 4Ω
Electrical Charactgeristics (Cont’d): (VS = 6V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
RL = 8Ω, PO = 0.5W, f = 1kHz
–
0.2
–
%
Bridge (Cont’d)
Distortion
d
Closed Loop Voltage Gain
GV
f = 1kHz
–
39
–
dB
Input Resistance
RI
f = 1kHz
100
–
–
kΩ
Total Input Noise
eN
RS = 10kΩ
B = Curve A
–
2.5
–
µV
B = 22Hz to 22kHz
–
3.0
–
µV
f = 100Hz
–
40
–
dB
RL = 8Ω, PO = 1W
–
120
–
kHz
Supply Voltage Rejection
SVR
Power bandwidth (–3dB)
B
Pin Connection Diagram
Output 1 1
8 (–) Input 1
Supply Voltage 2
Output 2 3
7 (+) Input 1
6 (+) Input 2
GND 4
5 (–) Input 2
8
5
.260 (6.6) Max
1
4
.430 (10.92)
Max
.300 (7.62)
.200
(5.08)
.125 (3.18) Min
.100 (2.54)
.300 (7.62)