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LM4934 Datasheet(PDF) 8 Page - National Semiconductor (TI) |
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LM4934 Datasheet(HTML) 8 Page - National Semiconductor (TI) |
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8 / 39 page  Digital Section Electrical Characteristics (Notes 1, 2) The following specifications apply for 3V ≤ AV DD ≤ 5V and 2.7V ≤ DV DD ≤ 4.0V, unless otherwise specified. Limits apply for T A = 25˚C. Symbol Parameter Conditions LM4934 Units (Limits) Typical (Note 6) Limits (Notes 7, 8) DI SD Digital Shutdown Current Mode 0, DV DD = 3.0V No MCLK 0.01 1 µA DI DD Digital Power Supply Current f MCLK = 12MHz, DVDD = 3.0V ALL MODES EXCEPT 0 5.3 8 mA PLLI DD PLL Quiescent Current f MCLK = 12MHz, DVDD = 3.0V 4.8 6 mA Audio DAC (Typical numbers are with 6.144MHz audio clock and 48kHz sampling frequency R DAC Audio DAC Ripple 20Hz - 20kHz through headphone output +/-0.1 dB PB DAC Audio DAC Passband width -3dB point 22.6 kHz SBA DAC Audio DAC Stop band Attenuation Above 24kHz 76 dB DR DAC Audio DAC Dynamic Range DC - 20kHz, –60dBFS; AES17 Standard See Table 4 Table 4 dB SNR Audio DAC-AMP Signal to Noise Ratio A-Weighted, Signal = V O at 0dBFS, f = 1kHz Noise = digital zero, A-weighted, See Table 4 Table 4 dB SNR DAC Internal DAC SNR A-weighted (Note 10) 95 dB PLL f IN Input Frequency on MCLK pin 12 10 MHz 26 SPI/I 2C f SPI Maximum SPI Frequency 4000 kHz (max) t SPISETD SPI Data Setup Time 100 ns (max) t SPISETENB SPI ENB Setup Time 100 ns (max) t SPIHOLDD SPI Data Hold Time 100 ns (max) t SPIHOLDENB SPI ENB Hold Time 100 ns (max) t SPICL SPI Clock Low Time 125 ns (max) t SPICH SPI Clock High Time 125 ns (max) f CLKI2C I 2C_CLK Frequency 400 kHz (max) t I2CHOLD I 2C_DATA Hold Time 100 ns (max) t I2CSET I 2C_DATA Setup Time 100 ns (max) V IH I 2C/SPI Input High Voltage I 2CV DD 0.7 x I 2CV DD V (min) V IL I 2C/SPI Input Low Voltage 0 0.3 x I 2CV DD V (max) I 2S f CLKI2SI 2S_CLK Frequency I 2S_RES = 0 1536 6144 kHz (max) I 2S_RES = 1 3072 12288 I 2S_WS Duty Cycle 50 40 % V IH Digital Input High Voltage 0.7 x DV DD V (min) V IL Digital Input Low Voltage 0.3 x DV DD V (max) Note 1: All voltages are measured with respect to the GND pin unless otherwise specified. www.national.com 8 |
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