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LM4854 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LM4854 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
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6 / 29 page ![]() Electrical Characteristics Bridged-Mode Operation (V DD = 5V) The following specifications apply for for the circuit shown in Figure 1 and a measurement bandwith of 20Hz to 80kHz, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4854 Units (Limits) Typical (Note 8) Limit (Notes 9, 10) P O Output Power (Note 11) THD = 1% (max); f = 1kHz (Note12) R L = 3.2 Ω (LM4854LD) R L =4 Ω (LM4854LD) R L =8 Ω 1.9 1.7 1.1 1.0 W W W (min) THD = 10% (max); f = 1kHz (Note12) R L = 3.2 Ω (LM4854LD) R L =4 Ω (LM4854LD) R L =8 Ω 2.3 2.1 1.3 W W W THD+N Total Harmonic Distortion+Noise 20Hz ≤ f IN ≤ 20kHz R L =4 Ω,P O = 1.0W (LM4854LD) R L =8 Ω,P O = 400mW 0.3 0.18 % % f IN = 1kHz R L =4 Ω,P O = 1.5W (LM4854LD) R L =8 Ω,P O = 50mW 0.1 0.08 % % S/N Signal-to-Noise Ratio f IN = 1kHz, CBYPASS = 1.0µF P O = 900mW, RL =8 Ω 90 dB Electrical Characteristics : SE Operation (V DD = 5V) The following specifications apply for for the circuit shown in Figure 1 and a measurement bandwith of 20Hz to 80kHz, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4854 Units (Limits) Typical (Note 8) Limit (Notes 9, 10) P O Output Power (Note 11) THD+N = 1.0%, f = 1kHz, R L =32 Ω THD+N = 10%, f = 1kHz, R L =32 Ω THD+N = 1.0%, f = 1kHz, R L =16 Ω THD+N = 10%, f = 1kHz, R L =16 Ω 93 105 170 200 85 140 mW(min) mW mW(min) mW THD+N Total Harmonic Distortion+Noise 20Hz ≤ f IN ≤ 20kHz R L =32 Ω,P O = 50mW 0.3 % VOUT Output Voltage Swing THD = 1.0%, R L =5k Ω 4.0 V P-P XTALK Channel Separation f IN = 1kHz, CBYPASS = 1.0µF, RL =32 Ω 55 dB S/N Signal-to-Noise Ratio f IN = 1kHz, CBYPASS = 1.0µF P O = 50mW, RL =32 Ω 90 dB Electrical Characteristics for Entire Amplifier (V DD = 3.0V) The following specifications apply for circuit shown in Figure 1, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4854 Units (Limits) Typical (Note 8) Limit (Notes 9, 10) I DD Quiescent Power Supply Current V IN = 0V, IO = 0A, 8 Ω Load 4.0 10 mA (max) I STBY Standby Quiescent Power Supply Current V STANDBY = GND 16.0 20.0 µA (max) I SD Shutdown Current V SHUTDOWN = GND 0.005 0.02 µA (max) V OS Output Offset Voltage 8 Ω Load 2.0 40 mV (max) www.national.com 6 |
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