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LM4756 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM4756 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 17 page  Absolute Maximum Ratings (Notes 3, 4) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage 30V Output Current Internally Limited Power Dissipation (Note 5) 22W ESD Susceptibility (Note 6) 2000V ESD Susceptibility (Note 7) 250V Junction Temperature 150˚C Soldering Information T Package (10 sec) 260˚C Storage Temperature −40˚C to +150˚C Input Signal Voltage Range ±3V Operating Ratings (Notes 3, 4) Temperature Range T MIN ≤ T A ≤ T MAX −40˚C ≤ T A ≤ +85˚C Supply Voltage 15V to 28V θ JA (Junction to Ambient) 35˚C/W θ JC (Junction to Case) 1.5˚C/W Electrical Characteristics (Notes 3, 4) The following specifications apply for V CC = +22V, and Volume at 0dB unless otherwise specified. Limits apply for TA = 25˚C. Symbol Parameter Conditions LM4756 Units (Limits) Typical (Note 8) Limit (Note 9) I CQ (Note 1) Total Quiescent Power Supply Current V CM = 0V, Vo = 0V, Io = 0 mA 20 mA (min) 80 140 mA (max) I STBY (Note 1) Standby Current V STDBY = 5V, Standby-on 7 10 mA (max) I MUTE Mute Current V MUTE = 5V Mute-on 13 20 mA A M (Note 2) Mute Attenuation V MUTE = 5V, VSTDBY = 0V. Mute-on Signal Input 75 60 dB (min) V MUTE = 0V. VSTDBY = 0V. Mute-off 2 Vrms ±5dB Volume Attenuation Range 80 70 dB (min) Volume Absolute Attenuation Line-out Pin 3 @ 0V=80dB, 2V=14dB, 3V=8dB, 4V=3dB, 5V=0dB ±3 ±5 dB (max) Line-out Offset Voltage 20 55 mV (max) P O (Note 1) Output Power (Continuous Average) THD+N = 10% (max) f = 1 kHz, R L =4 Ω,V CC = 18V 7 W f = 1 kHz, R L =8 Ω,V CC = 22V 7 6.0 W(min) THD+N (Note 2) Total Harmonic Distortion Plus Noise P o =1W,f=1 kHz, RL =8 Ω 0.4 1 % (max) Xtalk (Note 2) Channel Separation f = 1 kHz, P o = 5W, RL =8 Ω 50 dB Power Amp Closed-Loop Gain Error Internal Gain = 30 dB 0.5 ±1 dB (max) SR (Note 2) Slew Rate V IN = 100 mVp-p, tRISE = 2 ns, RL =8 Ω 3 V/µs R IN (Note 1) Input Impedance 32 k Ω I O (Note 1) Output Current Limit V IN = 100 mV DC, tON = 1 ms, RL =1 Ω 2.5 2.0 A(min) PSRR (Note 2) Power Supply Rejection Ratio Vpin 13 AC = 1 Vrms, f = 100 Hz 50 dB V CM = 0V, Io =0mA GBWP Gain-Bandwidth Product f o = 100 kHz, VIN = 50 mvrms 2 MHz Power Bandwidth −3 dB Bandwidth at 5W 90 kHz eVCA out VCA Output Noise IHF - A Weighting Filter R IN =25 Ω 55 µV e out Power Amp Output Noise IHF - A Weighting Filter R IN =25 Ω 1.8 mV www.national.com 3 |
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