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LM4731 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM4731 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 16 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-| 56V Common Mode Input Voltage V + or V- Differential Input Voltage 56V Output Current Internally Limited Power Dissipation (Note 3) 50W ESD Susceptability (Note 4) 2.0kV ESD Susceptability (Note 6) 250V Junction Temperature (T JMAX) (Note 9) 150˚C Soldering Information T Package (10 sec.) 260˚C Storage Temperature −40˚C to +150˚C Thermal Resistance θ JA (TA) 43˚C/W θ JC (TA) 1.5˚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 ≤ V TOTAL ≤ 56V Electrical Characteristics (Notes 1, 2) The following specifications apply for V + = +22V, V- = −22V and R L =8 Ω unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4731 Units (Limits) Typical Limit (Note 6) (Notes 7, 8) |V +|+|V-| Power Supply Voltage (Note 10) GND − V - ≥ 9V 20 56 V (min) V (max) A M Mute Attenuation 85 dB P O Output Power (RMS) THD+N = 10% (max), f = 1kHz |V +|=|V-| = 18V, R L =4 Ω |V +|=|V-| = 22V, R L =8 Ω 25 25 20 22 W (min) W (min) THD+N = 1% (max), f = 1kHz |V +|=|V-| =18V, R L =4 Ω |V +|=|V-| = 22V, R L =8 Ω 20 20 18 18 W (min) W (min) THD+N Total Harmonic Distortion + Noise P O = 1W, f = 1kHz A V = 26dB, |V +|=|V-| = 18V, R L =4 Ω |V +|=|V-| = 22V, R L =8 Ω 0.03 0.02 0.5 0.3 % (max) % (max) X talk Channel Separation P O = 10W f = 1kHz f = 10kHz 65 60 dB dB SR Slew Rate (Note 11) V IN = 2.0Vp-p,trise = 2ns 18 V/µs I DD Total Quiescent Power Supply Current V CM = 0V, VO = 0V, IO =0A Standby off (Play Mode) Standby on (Standby Mode) 95 4.8 110 6 mA (max) mA (max) V OS Input Offset Voltage V CM = 0V, IO = 0 mA 2.0 15 mV (max) I B Input Bias Current V CM = 0V, IO = 0 mA 0.2 µA PSRR Power Supply Rejection Ratio V RIPPLE =1VRMS,fRIPPLE = 120Hz sine wave Inputs terminated to GND 50 dB A VOL Open Loop Voltage Gain R L =2 k Ω, ∆ V O = 20V 110 dB e IN Input Noise IHF — A-Weighting Filter 2.0 8 µV (max) R IN = 600 Ω (Input Referred) Standby V IL Standby Low Input Voltage Not in Standby Mode (Play) 0.8 V (max) V IH Standby High Input Voltage In Standby Mode 2.0 2.5 V (min) Mute www.national.com 3 |
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