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LM1877 Scheda tecnica(PDF) 3 Page - Texas Instruments

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Il numero della parte LM1877
Spiegazioni elettronici  Dual Audio Power Amplifier
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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LM1877
www.ti.com
SNAS550B – FEBRUARY 1995 – REVISED APRIL 2013
Electrical Characteristics
VS = 20V, TA = 25°C
(1) R
L = 8Ω, AV = 50 (34 dB) unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Total Supply Current
PO = 0W
25
50
mA
Output Power
THD = 10%
LM1877
VS = 20V, RL = 8Ω
2.0
W/Ch
VS = 12V, RL = 8Ω
1.3
W/Ch
Total Harmonic Distortion
f = 1 kHz, VS = 14V
LM1877
PO = 50 mW/Channel
0.075
%
PO = 500 mW/Channel
0.045
%
PO = 1 W/Channel
0.055
%
Output Swing
RL = 8Ω
VS −6
Vp-p
Channel Separation
CF = 50 μF, CIN = 0.1 μF,
f = 1 kHz, Output Referred
VS = 20V, VO = 4 Vrms
−50
−70
dB
VS = 7V, VO = 0.5 Vrms
−60
dB
PSRR Power Supply
CF = 50 μF, CIN = 0.1 μF,
Rejection Ratio
f = 120 Hz, Output Referred
VS = 20V, VRIPPLE = 1 Vrms
−50
−65
dB
VS = 7V, VRIPPLE = 0.5 Vrms
−40
dB
Noise
Equivalent Input Noise
RS = 0, CIN = 0.1 μF,
2.5
μV
BW = 20 Hz–20 kHz, Output Noise Wideband
RS = 0, CN = 0.1 μF, AV 200
0.80
mV
Open Loop Gain
RS = 0, f = 100 kHz, RL = 8Ω
70
dB
Input Offset Voltage
15
mV
Input Bias Current
50
nA
Input Impedance
Open Loop
4
M
Ω
DC Output Level
VS = 20V
9
10
11
V
Slew Rate
2.0
V/
μs
Power Bandwidth
65
kHz
Current Limit
1.0
A
(1)
For operation at ambient temperature greater than 25°C, the LM1877 must be derated based on a maximum 150°C junction
temperature.
Copyright © 1995–2013, Texas Instruments Incorporated
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