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LM1875T Scheda tecnica(PDF) 2 Page - National Semiconductor (TI) |
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LM1875T Scheda tecnica(HTML) 2 Page - National Semiconductor (TI) |
2 / 11 page 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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