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WM8718 Datasheet(PDF) 6 Page - Wolfson Microelectronics plc |
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WM8718 Datasheet(HTML) 6 Page - Wolfson Microelectronics plc |
6 / 27 page WM8718 Production Data w PD Rev 4.1 March 2004 6 DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Digital supply range DVDD 3.0 5.5 V Analogue supply range AVDD 3.0 5.5 V Ground AGND, DGND 0 V Difference DGND to AGND -0.3 0 +0.3 V AVDD = 3.3V 0.191 a 19 mA Supply current AVDD = 5V 0.191 a 22 mA DVDD = 3.3V 160 uA 7.1 mA Supply current DVDD = 5V 160 uA 8.3 mA Notes: 1. This value represents the current usage when there are no switching digital inputs, MCLK is applied and the chip is in power down mode 2. Digital supply DVDD must never be more than 0.3V greater than AVDD. ELECTRICAL CHARACTERISTICS Test Conditions AVDD = 5V, DVDD = 3.3V, AGND, DGND = 0V, TA = +25 oC, fs = 48kHz, MCLK = 256fs unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Digital Logic Levels (TTL Levels) Input LOW level VIL 0.8 V Input HIGH level VIH 2.0 V Output LOW VOL IOL = 1mA AGND + 0.3V V Output HIGH VOH IOH = 1mA DVDD – 0.3V V Analogue Reference Levels Reference voltage VMID AVDD/2 - 50mV AVDD/2 AVDD/2 + 50mV V Potential divider resistance RVMID 8.7k Ω DAC Output (Load = 10k Ω Ω Ω Ω 50pF) 0dBFs Full scale output voltage At DAC outputs 2 x AVDD/5 Vrms SNR (Note 1,2,3) A-weighted, @ fs = 48kHz 105 111 dB SNR (Note 1,2,3) A-weighted @ fs = 96kHz 109 dB SNR (Note 1,2,3) A-weighted @ fs = 192kHz 109 dB SNR (Note 1,2,3) A-weighted, @ fs = 48kHz AVDD = 3.3V 105 dB SNR (Note 1,2,3) A-weighted @ fs = 96kHz AVDD = 3.3V 102 dB SNR (Note 1,2,3) Non ‘A’ weighted @ fs = 48kHz 108 dB THD (Note 1,2,3) 1kHz, 0dBFs -100 -80 dB THD+N (Dynamic range, Note 2) 1kHz, -60dBFs 105 111 dB DAC channel separation 100 dB |
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