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LM4934 Datasheet(PDF) 5 Page - National Semiconductor (TI) |
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LM4934 Datasheet(HTML) 5 Page - National Semiconductor (TI) |
5 / 39 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. Analog Supply Voltage 6.0V Digital Supply Voltage 6.0V Storage Temperature -65˚C to +150˚C Input Voltage -0.3V to V DD +0.3V Power Dissipation (Note 3) Internally Limited ESD Susceptibility (Note 4) 2000V ESD Susceptibility(Note 5) 200V Junction Temperature 150˚C Thermal Resistance θ JA (RLA42) 61˚C/W See AN-1279 Operating Ratings Temperature Range T MIN ≤ T A ≤ T MAX −40˚C ≤ T A ≤ +85˚C Supply Voltage 2.7V ≤ AV DD ≤ 5.5V 2.7V ≤ DV DD ≤ 4.0V 2.4V ≤ I2CV DD ≤ 4.0V Audio Amplifier Electrical Characteristics AV DD = 3.0V, DVDD = 3.0V (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, OCL 18.5 26.5 mA (max) Headphone Mode Only, OCL 5.6 8 mA (max) Stereo Speaker Mode Only 12 19.5 mA (max) Mono Speaker Mode Only 5.9 8 mA (max) DAC Off, All Amps On, OCL 14.6 22 mA (max) I SD Shutdown Current 0.6 2 µA (max) P O Output Power Speaker; THD = 1%; f = 1kHz, 8 Ω BTL 420 370 mW (min) Headphone; THD = 1%; f = 1kHz, 32 Ω SE 27 24 mW (min) Earpiece; THD = 1%; f = 1kHz, 32 Ω BTL 45 40 mW (min) V FS DAC Full Scale DAC Output 2.4 Vpp THD+N Total Harmonic Distortion Speaker; P O = 200mW; f = 1kHz, 8 Ω BTL 0.04 % Headphone; P O = 10mW; f = 1kHz, 32 Ω SE 0.01 % Earpiece; P O = 20mW; f = 1kHz, 32 Ω BTL 0.04 % Line Out; V O = 1Vrms; f = 1kHz, 10k Ω SE 0.004 % V OS Offset Voltage Speaker 8 55 mV (max) Earpiece 8 50 mV (max) HP (OCL) 8 40 mV ∈ O Output Noise A = weighted; 0dB gain; See Table 1 Table 1 PSRR Power Supply Rejection Ratio f = 217Hz; V ripple = 200mVP-P C B = 2.2µF; See Table 2 Table 2 www.national.com 5 |
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