3718 データシートの表示（PDF） - Allegro MicroSystems
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3718 Datasheet PDF : 6 Pages
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3718
LOW-VOLTAGE AUDIO POWER AMPLIFIER
ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 3 V, RL = 32Ω, fin = 400 Hz
(unless otherwise noted).
Characteristic
Supply Voltage Range
Quiescent Supply Current
Voltage Gain
Audio Power Output
Distortion
Output Noise
Input Resistance
Power Supply Rejection
Symbol
VCC
ICC
AV
POUT
THD
Vout
RIN
PSRR
Test Conditions
VCC = 3.0 V
VCC = 6.0 V
VCC = 9.0 V
RL = 8Ω, VCC = 3.0 V, THD = 10%
RL = 8Ω, VCC = 6.0 V, THD = 10%
RL = 32Ω, VCC = 3.0 V, THD = 10%
RL = 32Ω, VCC = 6.0 V, THD = 10%
POUT = 10 mW
POUT = 1.0 mW, VCC = 1.8 V
Input Shorted, BW = 80 kHz
Pin 8
CD (Pin 1) = 500 µF, f = 120 Hz
Min.
1.8
—
—
—
36
—
250
15
—
—
—
—
—
—
Limits
Typ. Max.
3.0
9.0
6.0
10
9.0
15
12
20
40
44
80
—
430
—
25
—
125
—
0.3
1.0
1.5
3.0
200
500
250
—
28
—
Units
V
mA
mA
mA
dB
mW
mW
mW
mW
%
%
µV
kΩ
dB
TEST CIRCUIT AND TYPICAL
2.0
APPLICATION
RθJC = 55°C/W
1.5
1.0
FREE AIR, R θJA= 80°C/W
0.5
0
25
50
75
100
125
150
TEMPERATURE IN °C
Dwg. GP-009-1B
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1985, 1995, Allegro MicroSystems, Inc.
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