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LM3875 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM3875 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
3 / 20 page Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage |V +|+|V−| (No Signal) 94V Supply Voltage |V +|+|V−| (Input Signal) 84V Common Mode Input Voltage (V + or V−) and |V +|+|V−| ≤ 80V Differential Input Voltage 60V Output Current Internally Limited Power Dissipation (Note 3) 125W ESD Susceptibility (Note 4) 2500V Junction Temperature (Note 5) 150˚C Soldering Information T package (10 seconds) 260˚C Storage Temperature −40˚C to +150˚C Thermal Resistance θ JC 1˚C/W θ JA 43˚C/W Operating Ratings (Notes 1, 2) Temperature Range T MIN ≤ T A ≤ T MAX −20˚C ≤ T A ≤ +85˚C Supply Voltage |V +|+|V−| 20V to 84V Note: Operation is guaranteed up to 84V, however, distortion may be intro- duced from the SPiKe Protection Circuitry when operating above 70V if proper thermal considerations are not taken into account. Refer to the Thermal Considerations section for more information. (See SPiKe Protection Response) Electrical Characteristics (Notes 1, 2) The following specifications apply for V + = +35V, V− = −35V with R L =8 Ω unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM3875 Units (Limits) Typical (Note 6) Limit (Note 7) |V +|+|V−| Power Supply Voltage 20 84 V (Min) V (Max) **P O Output Power (Continuous Average) THD+N= 0.1% (Max) f=1kHz,f=20kHz 56 40 W (Min) Peak P O Instantaneous Peak Output Power 100 W THD + N Total Harmonic Distortion Plus Noise 40W, 20 Hz ≤ f ≤ 20 kHz A V =26dB 0.06 % **SR Slew Rate (Note 9) V IN = 1.414 Vrms,f=10kHz Square-wave, R L =2k Ω 11 5 V/µs (Min) *I+ Total Quiescent Power Supply Current V CM = 0V, VO = 0V, Io =0mA 30 70 mA (Max) *V OS Input Offset Voltage V CM = 0V, Io = 0 mA 1 10 mV (Max) I B Input Bias Current V CM = 0V, Io = 0 mA 0.2 1 µA (Max) I OS Input Offset Current V CM = 0V, Io = 0 mA 0.01 0.2 µA (Max) I o Output Current Limit |V +|=|V−| = 10V, t on = 10 ms, VO = 0V 6 4 A(Min) *V od Output Dropout Voltage |V +−V o −|, V+ = 20V, I o = +100 mA |V o−V −|, V− = −20V, I o = −100 mA 1.6 2.7 5 5 V (Max) V (Max) *PSRR Power Supply Rejection Ratio V + = 40V to 20V, V− = −40V, V cm = 0V, Io =0mA V + = 40V, V = −40V to −20V, V cm = 0V, Io =0mA 120 120 85 85 dB (Min) *CMRR Common Mode Rejection Ratio V + = 60V to 20V, V− = −20V to −60V, V cm = 20V to −20V, Io =0mA 120 80 dB (Min) *A VOL Open Loop Voltage Gain |V +|=|V−| = 40V, R L =2k Ω, ∆V O = 60V 120 90 dB (Min) GBWP Gain-Bandwidth Product |V +|=|V−| = 40V f O = 100 kHz, VIN = 50 mVrms 82 MHz (Min) **e IN Input Noise IHF − A Weighting Filter R IN = 600 Ω (Input Referred) 2.0 8.0 µV (Max) www.national.com 3 |
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