LM1875 20W Audio Power Amplifier - SP-Elektroniikka
LM1875 20W Audio Power Amplifier - SP-Elektroniikka
LM1875 20W Audio Power Amplifier - SP-Elektroniikka
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Absolute Maximum Ratings<br />
If MilitaryAerospace specified devices are required<br />
please contact the National Semiconductor Sales<br />
OfficeDistributors for availability and specifications<br />
bV EE to V CC Input Voltage i JA<br />
73C<br />
Storage Temperature b65Ctoa150C<br />
Junction Temperature<br />
150C<br />
Supply Voltage<br />
60V<br />
Lead Temperature (Soldering 10 seconds) 260C<br />
i JC<br />
3C<br />
Electrical Characteristics<br />
V CC ea25V bV EE eb25V T AMBIENT e25C R L e8X A V e20 (26 dB) f o e1 kHz unless otherwise specified<br />
Parameter Conditions Typical Tested Limits Units<br />
Supply Current P OUT e0W 70 100 mA<br />
Output <strong>Power</strong> (Note 1) THDe1% 25 W<br />
THD (Note 1) P OUT e<strong>20W</strong> f o e1 kHz 0015 %<br />
P OUT e<strong>20W</strong> f o e20 kHz 005 04 %<br />
P OUT e<strong>20W</strong> R L e4Xf o e1 kHz 0022 %<br />
P OUT e<strong>20W</strong> R L e4Xf o e20 kHz 007 06 %<br />
Offset Voltage g1 g15 mV<br />
Input Bias Current g02 g2 mA<br />
Input Offset Current 0 g05 mA<br />
Gain-Bandwidth Product f o e20 kHz 55 MHz<br />
Open Loop Gain DC 90 dB<br />
PSRR V CC 1 kHz 1 Vrms 95 52 dB<br />
V EE 1 kHz 1 Vrms 83 52 dB<br />
Max Slew Rate <strong>20W</strong> 8X 70 kHz BW 8 Vms<br />
Current Limit V OUT e V SUPPLY b10V 4 3 A<br />
Equivalent Input Noise Voltage R S e600X CCIR 3 mVrms<br />
Note 1 Assumes the use of a heat sink having a thermal resistance of 1CW and no insulator with an ambient temperature of 25C Because the output limiting<br />
circuitry has a negative temperature coefficient the maximum output power delivered to a 4X load may be slightly reduced when the tab temperature exceeds<br />
55C<br />
Typical Applications (Continued)<br />
Typical Single Supply Operation<br />
TLH5030–3<br />
2
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