1389

NTE1389
Integrated Circuit
Dual, Audio Power Amplifier, 20W
Description:
the NTE1389 is an audio power amplifier in a 12–Lead SIP type package specifically designed for
car stereo applications. Typically, it provides 23W output power at 14.4V and 20W at 13.2V on a 4
Ohm load.
This device can be used without capacitors because it incorporates the original short circuit protection
which protects output power transistors and a speaker at the same time when the output terminal is
shorted to ground.
Features:
D Can be used as OCL Connection
D Very Low Output Offset Voltage
D High Output Power
D Very Low Distortion
D Very Low Number of External Low Size Components, Very Simple Mounting System with no
Electrical isolation Between the package and the Heat Sink
D Low Thermal Resistance
D Provides the Following Protective Circuits:
Load Dump Protection
Output Thermal Short Circuit Protection
Thermal Shutdown Protection
Speaker Protection
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage (Note 1), VCCsurge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
Quiescent Supply Voltage (Note 2), VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
Operational Supply Voltage, VCC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Peak Circuit Current, ICCpeak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5A
package Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20W
Operating Temperature Range (Note 2), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Note 1. Pulse Width = 200ms, Trise ≥ 1ms.
Note 2. Using an aluminum heat sink, RthCA = 4°C/W.
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Supply Voltage Range
Min
Typ
Max
Unit
VCC
9.5
–
16
V
RL
3.2
–
16
Ω
Load Impedance
Test Conditions
Electrical Characteristics: (TA = +25°C, VCC = 13.2V, RL = 4Ω, f = 1kHz unless otherwise specified)
Parameter
Quiescent Current
Output Offset Voltage
Output Power
Voltage Gain
Total Harmonic Distortion
Output Noise Level
Supply Voltage Rejection Ratio
Symbol
Test Conditions
Min
Typ
Max
Unit
ICC
vin = 0
–
90
180
mA
Voffset
vin = 0
–
–
±150
mV
VCC = 14.4V THD = 10%
–
23
–
W
VCC = 13.2V THD = 10%
16
20
–
W
Vin = 2.45mV
53
55
56
dB
PO = 2W
–
0.15
1.0
%
RG = 0, BW = 20Hz to 20kHz
–
0.65
–
mV
RG = 0, fripple = 100Hz, vripple = 0.5V
–
45
–
dB
–
45
–
kΩ
–
90
–
kHz
–
15
–
Hz
PO
AV
THD
vn
SVRR
Input Resistance
Ri
Rolloff Frequency, High
fH
Rolloff Frequency, Low
fL
Av = –3dB from 1kHz Ref.
Pin Connection Diagram
(Front View)
12 GND
11 Output 1
10 Feedback
9 VCC
8 47µF Cap
7 (+) Input 2
6 (+) Input 1
5 (–) Input 1
4 (–) Input 2
3 Bypass
2 Feedback
1 Output 2
1.260 (32.0) Max
.197 (5.0)
Max
.945 (24.0)
.590
(14.9)
1
12
.070
(1.78)
R Typ
.256
(6.5)
.100 (2.54)
.099 (2.5)
.512
(13.0)
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