7103

NTE7103
Integrated Circuit
50W to 80W Power Amplifier, Driver
Description:
The NTE7103 is an integrated monolithic circuit in a 14−Lead SIP type package designed for use in
50W to 80W class HiFi audio power amplifier applications. This device consists of an input differential
amplifier, a predriver circuit, a driver circuit, and an over current protection circuit.
Features:
D Low Distortion
0.002% Typ. (VCC = ±46V, f = 1kHz, Av = 30dB, PO = 50W, RL = 8Ω w/Power Transistor)
0.006% Typ. (VCC = ±46V, f = 20kHz, Av = 30dB, PO = 50W, RL = 8Ω w/Power Transistor)
D Wide Frequency Band
D Wide Power Band
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage (Quiescent), VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±65V
Supply Voltage (Operational), VCC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50V
Circuit Current, ICC(peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250mA
Allowable Package Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40° to +150°C
Note 1. 100 x 100 x 2mm Al heat sink.
Recommended Operating Conditions:
Supply Voltage (Operational), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 to ±46V
Input Bias Resistance, RIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 50 to 100kΩ
Power Transistor hFE (PO = 80W, RL = 8Ω, TJ < +125°C), hFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . ≤ 50
Closed Loop Voltage Gain, Av . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 to 30dB
Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +125°C
Electrical Characteristics: (VCC = ±46V, Av = 30dB, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Voffset
VIN = 0
−
±5
±50
mV
Quiescent Circuit Current
ICC
VIN = 0
−
20
40
mA
Maximum Output Voltage
VOM
THD = 0.05%, f = 20Hz to 20kHz
25
28
−
V
Open Loop Voltage Gain
Avo
VO = 1.5V, f = 1kHz
80
95
−
dB
Output Noise Voltage
Vn
RG = 10kΩ
−
0.07 0.14
mV
Rolloff Frequency
fH
VO = 1.5V, −3dB
−
900
−
kHz
RG = 2.2kΩ, fripple = 100Hz,
vripple = 1Vrms
55
70
−
dB
Output Offset Voltage
Supply Voltage Rejection Ratio
SVR
Pin Connection Diagram
(Front View)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
N.C.
N.C.
Upper Output
Lower Output
−VCCD (for Driver)
−VCCP (for Preamp)
Bias
Bias
Phase Compensation
NFB
Input
Muting
+VCCP (for Preamp)
+VCCD (for Driver)
1.000 (25.4) Max
.843 (21.4)
.472 (12.0)
.138
(3.5)
.532
(13.5)
Max
.142 (3.6) Dia.
.480
(12.2)
1
.607
(15.4)
Max
14
.134
(3.4)
.067 (1.7) Max
.200 (5.08)
.138 (3.5)