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LM1875T Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM1875T
Description  20W Audio Power Amplifier
Download  11 Pages
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM1875T Datasheet(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
Supply Voltage
60V
Input Voltage
−V
EE to VCC
Storage Temperature
−65˚C to + 150˚C
Junction Temperature
150˚C
Lead Temperature
(Soldering, 10 seconds)
260˚C
θ
JC
3˚C
θ
JA
73˚C
Electrical Characteristics
V
CC=+25V, −VEE=−25V, TAMBIENT=25˚C, RL=8
Ω,A
V=20 (26 dB), fo=1 kHz, unless otherwise specified.
Parameter
Conditions
Typical
Tested Limits
Units
Supply Current
P
OUT=0W
70
100
mA
Output Power (Note 2)
THD=1%
25
W
THD (Note 2)
P
OUT=20W, fo=1 kHz
0.015
%
P
OUT=20W, fo=20 kHz
0.05
0.4
%
P
OUT=20W, RL=4
Ω,f
o=1 kHz
0.022
%
P
OUT=20W, RL=4
Ω,f
o=20 kHz
0.07
0.6
%
Offset Voltage
±1
±15
mV
Input Bias Current
±0.2
±2µA
Input Offset Current
0
±0.5
µA
Gain-Bandwidth Product
f
o=20 kHz
5.5
MHz
Open Loop Gain
DC
90
dB
PSRR
V
CC, 1 kHz, 1 Vrms
95
52
dB
V
EE, 1 kHz, 1 Vrms
83
52
dB
Max Slew Rate
20W, 8
Ω, 70 kHz BW
8
V/µs
Current Limit
V
OUT =VSUPPLY −10V
4
3
A
Equivalent Input Noise Voltage
R
S=600
Ω, CCIR
3
µVrms
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2: Assumes the use of a heat sink having a thermal resistance of 1˚C/W and no insulator with an ambient temperature of 25˚C. Because the output limiting
circuitry has a negative temperature coefficient, the maximum output power delivered to a 4
Ω load may be slightly reduced when the tab temperature exceeds 55˚C.
Typical Applications
Typical Single Supply Operation
00503003
www.national.com
2


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