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LM4914 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM4914 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 15 page Electrical Characteristics: Bridged-Mode Operation (V DD = 5V) (Note 3) The following specifications apply for the circuit shown in Figure 1, R L =8 Ω, and a measurement bandwidth of 20Hz to 80kHz, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4914 Units (Limits) Typical Limit (Note 8) (Notes 9, 10) P O Output Power (Note 1, 11) R L =8 Ω, f = 1kHz, THD+N = 0.1%, A V = 8dB 1 W (min) THD+N Total Harmonic Distortion + Noise R L =8 Ω, f = 1kHz, P O = 1W 0.33 % V ON Output Voltage Noise C B = 0.47µF, 20Hz < f < 20kHz 35 µV RMS Electrical Characteristics: SE Operation (V DD = 5V) (Note 3) The following specifications apply for the circuit shown in Figure 1 and a measurement bandwidth of 20Hz to 80kHz, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4914 Units (Limits) Typical Limit (Note 8) (Notes 9, 10) P O Output Power (Note 11) THD+N = 0.1%, f = 1kHz, R L =32 Ω,A V = 1.9dB (Note 12) 85 mW (min) V ON Output Voltage Noise C B = 0.47µF, 20Hz < f < 20kHz 13 µV RMS Electrical Characteristics for Entire Amplifier (V DD = 3V) (Note 3) The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4914 Units (Limits) Typical Limit (Note 8) (Notes 9, 10) V DD Supply Voltage 2.5 5.5 V (min) V (max) I DD Quiescent Power Supply Current V IN = 0V, IO = 0A, No Load 2.7 5 mA (max) I SD Shutdown Quiescent Power Supply Current V SHUTDOWN = GND 0.03 4 µA (max) V OS Output Offset Voltage 7 30 mV (max) PSRR Power Supply Rejection Ratio V DD = 3V, CBYPASS = 0.47µF, V ripple = 200mVp-p 1kHz sine wave R L =8 Ω 52 BTL 60 SE dB HP-S VIH HP-SENSE Logic-High Threshold Voltage 2.7 V (min) HP-S VIL HP-SENSE Logic-Low Threshold Voltage 1.65 V (max) SD VIH Shutdown Logic High Threshold 2 V (min) SD VIL Shutdown Logic LowThreshold 0.8 V (max) www.national.com 4 |
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