NTE740A Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Audio Power Amp, 2W

NTE740A
Integrated Circuit
Audio Power Amp, 2W
Description:
TheNTE740A is an Audio Power Amplifier in a 14–Lead DIP type package designed for minimal external
component requirements.
Features:
D Low Distortion
D Low Quiescent Current
D 34dB Internally Fixed Gain
D High Input Impedance
D Thermal Overload Protection
D Output Short Circuit Current Limiting
Absolute Maximum Ratings:
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26V
Peak Output Current, I_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2A
Operating Ambient Temperature Range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +70°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Electrical Characteristics: (T_A = +25°C, V_CC = 18V, f = 1kHz, R_L = 8Ω unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage Range
Quiescent Supply Current
Quiescent Output Voltage
Output Voltage Swing
Voltage Gain
Total Harmonic Distortion
Audio Output Power
Input Impedance
Power Supply Rejection Ratio
Equivalent Input Noise Voltage
Sensitivity Input Voltage
Bandwidth (–3dB)
V_CC
I_CC
V_OQ
V_O
A_V
THD
P_out
Z_in
PSRR
e_in
BW
No Signal Applied
No Signal Applied, Note 1
P_out = 2W
P_out = 0
P_out = 2W, Note 2
P_out = 50mW, Note 3
THD = 2%, R_L = 8Ω, Note 4
THD = 2%, R_L = 16Ω, Note 4
Each Input
P_out = 0, f = 120Hz, Note 5
f = 20Hz to 20kHz
e_out = 4.0V_rms, P_out = 2W
P_out = 1W, Note 6
9 10 26 V
– 15 – mA
9
–
–
V
–
12
– V_P–P
31 34 37 dB
– 1.0 2.0 %
– 0.5 1.0 %
2.0 2.5 –
W
2.0 2.5 –
W
140 170 – kΩ
– 40 – dB
–
60
– µV_rms
– 80 – mV
– 100 – kHz
Note 1. The quiescent output voltage typically equals 1/2 the normal V_CC voltage = 1 Volt.
Note 2. When driving a 16Ω load, the nominal V_CC is 24V.
Note 3. When driving a 16Ω load, the maximum low level distortion is reduced to 0.50%.
Note 4. Tested at V_CC equals nominal and measured in watts (rms).
Note 5. Measurement made with a 5µF capacitor from Pin1 to GND. Voltage at Pin14 is at a ripple
frequency of 60Hz.
Note 6. Unity gain occurs between 10 and 100MHz.