參數(shù)資料
型號(hào)： NTE745
廠商： NTE Electronics, Inc.
元件分類： 音頻放大器
英文描述： Integrated Circuit Audio Amplifier, 500mW
中文描述： 集成電路音頻放大器，500mW的
文件頁(yè)數(shù)： 1/2頁(yè)
文件大?。?/td> 20K
代理商： NTE745
NTE745
Integrated Circuit
Audio Amplifier, 500mW
Description:
the NTE745 is a monolithic complementary power amplifier and preamplifier designed to deliver
1/2–Watt into a loudspeaker with a 3.0mV
(rms)
typical input. Gain and bandwidth are externally adjust-
able. Typical applications include portable AM–FM radios, tape recorders, phonographs, and inter-
coms.
Features:
1/2–Watt Power Output (9.0 Vdc Supply, 8–Ohm Load)
High Overall Gain–3.0mV
(rms)
Sensitivity for 1/2–Watt Output
Low Zero–Signal Current Drain–4.0mAdc @ 9.0V typ
Low Distortion–0.5% at 250mW typ
Electrical Characteristics
: (V+ = 9V, R
L
= 8
, f = 1kHz, T
A
= +25
°
C unless otherwise specified)
Parameter
Symbol
Pre–Amplifier, R
L
= 1.0k
Power–Amplifier, R
L
= 16
Sensitivity
S
P
O
= 500mW
Output Impedance (Power–Amplifier)
Z
O
Signal to Noise Ratio
S/N
P
O
= 150mW, f = 300Hz to 10kHz
Total Harmonic Distortion
THD
P
O
= 250mW
Quiescent Output Voltage
V
O
Output Power
P
O
THD
≤
10%
Current Drain
I
D
Zero Signal
Power Dissipation
P
D
Zero Signal
Test Conditions
Min
Typ
Max
Unit
Open Loop Voltage Gain
A
VOL
–
270
–
V/V
–
360
–
V/V
–
3.0
–
mV
(rms)
W
–
0.5
–
–
55
–
dB
–
0.5
–
%
–
V+/2
–
Vdc
500
570
–
mW
–
4.0
–
mA
–
36
–
mW
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