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LM4934 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
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LM4934 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 39 page Audio Amplifier Electrical Characteristics AV DD = 3.0V, DVDD = 3.0V (Notes 1, 2) (Continued) The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4934 Units (Limits) Typical (Note 6) Limits (Notes 7, 8) Xtalk Crosstalk Loudspeaker; P O= 200mW f = 1kHz –84 dB Headphone; P O= 10mW f = 1kHz; SE –85 dB Headphone; P O= 10mW f = 1kHz; OCL –60 dB T WU Wake-Up Time C B = 2.2µF, CD6 = 0 35 ms C B = 2.2µF, CD6 = 1 85 ms Audio Amplifier Electrical Characteristics AV DD = 5.0V, DVDD = 3.3V (Notes 1, 2) The following specifications apply for the circuit shown in Figure 1 with all programmable gain set at 0dB, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4934 Units (Limits) Typical (Note 6) Limits (Notes 7, 8) I DD Supply Current V IN = 0, No Load All Amps On - DAC 24 mA (max) Headphone Mode Only 5.8 mA Stereo Speaker Mode Only 17 mA Mono Speaker Mode Only 7 mA DAC Off, All Amps On 19 mA I SD Shutdown Current 1.6 µA P O Output Power Speaker; THD = 1%; f = 1kHz, 8 Ω BTL 1.2 mW Headphone; THD = 1%; f = 1kHz, 32 Ω SE 80 mW Earpiece; THD = 1%; f = 1kHz, 32 Ω BTL 175 mW V FS DAC Full Scale DAC Output 2.4 Vpp THD+N Total Harmonic Distortion Speaker; P O = 500mW; f = 1kHz, 8 Ω BTL 0.03 % Headphone; P O = 30mW; f = 1kHz, 32 Ω SE 0.01 % Earpiece; P O = 40mW; f = 1kHz, 32 Ω BTL; CD4 = 0 0.04 % Line Out; V O = 1Vrms; f = 1kHz, 10k Ω SE 0.003 % V OS Offset Voltage Speaker 8 mV Earpiece 8 mV HP (OCL) 8 mV ∈ O Output Noise A = weighted; 0dB gain; See Table 1 Table 1 www.national.com 6 |
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