Datasheet

LM1875
www.ti.com SNAS524A –MAY 2004–REVISED MAY 2004
Electrical Characteristics
V
CC
=+25V, −V
EE
=−25V, T
AMBIENT
=25°C, R
L
=8Ω, A
V
=20 (26 dB), f
o
=1 kHz, unless otherwise specified.
Parameter Conditions Typical Tested Limits Units
Supply Current P
OUT
=0W 70 100 mA
Output Power
(1)
THD=1% 25 W
THD
(1)
P
OUT
=20W, f
o
=1 kHz 0.015 %
P
OUT
=20W, f
o
=20 kHz 0.05 0.4 %
P
OUT
=20W, R
L
=4Ω, f
o
=1 kHz 0.022 %
P
OUT
=20W, R
L
=4Ω, f
o
=20 kHz 0.07 0.6 %
Offset Voltage ±1 ±15 mV
Input Bias Current ±0.2 ±2 μA
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, 8Ω, 70 kHz BW 8 V/μs
Current Limit V
OUT
= V
SUPPLY
−10V 4 3 A
Equivalent Input Noise Voltage R
S
=600Ω, CCIR 3 μVrms
(1) 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 4Ω load may be slightly
reduced when the tab temperature exceeds 55°C.
Typical Applications For Single Supply Operation
Figure 2.
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