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WM8727GED Datasheet(PDF) 5 Page - Wolfson Microelectronics plc |
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WM8727GED Datasheet(HTML) 5 Page - Wolfson Microelectronics plc |
5 / 16 page WM8727 Production Data w PD Rev 4.1 April 2004 5 ELECTRICAL CHARACTERISTICS Test Conditions VDD = 5V, GND = 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 V Output LOW VOL IOL = 2mA 0.10 x VDD V Output HIGH VOH IOH = 2mA 0.9 x VDD V DAC Output (Load = 10k Ω Ω Ω Ω 50pF) 0dBFs Full scale output voltage At DAC outputs 1.2 x VDD/5 VRMS SNR (Note 1,2) A-weighted, @ fs = 48kHz 98 dB SNR (Note 1,2) A-weighted @ fs = 96kHz 95 dB SNR (Note 1,2) A-weighted @ fs = 192kHz 92 dB SNR (Note 1,2) A-weighted, @ fs = 48kHz VDD = 3.3V 95 dB SNR (Note 1,2) A-weighted @ fs = 96kHz VDD = 3.3V 95 dB SNR (Note 1,2) Non ‘A’ weighted @ fs = 48kHz 92 dB THD 1kHz, 0dBFs -84 dB Dynamic range (Note 2) 1kHz, THD+N @ -60dBFs 98 dB Analogue Output Levels Load = 10k Ω, 0dBFS 1.2 VRMS Output level Load = 10k Ω, 0dBFS, (VDD = 3.3V) 0.79 VRMS Gain mismatch channel-to-channel ±1 %FSR To midrail or a.c. coupled 1 k Ω Minimum resistance load To midrail or a.c. coupled (VDD = 3.3V) 1 k Ω Maximum capacitance load 5V or 3.3V 100 pF Output d.c. level VDD/2 V Power On Reset (POR) POR threshold 1.8 V Notes: 1. Ratio of output level with 1kHz full scale input, to the output level with all zeros into the digital input, measured ‘A’ weighted over a 20Hz to 20kHz bandwidth. 2. All performance measurements done with 20kHz low pass filter, and where noted an A-weight filter. Failure to use such a filter will result in higher THD+N and lower SNR and Dynamic Range readings than are found in the Electrical Characteristics. The low pass filter removes out of band noise; although it is not audible it may affect dynamic specification values. 3. Power down occurs 1.5 µs after MCLK stops. |
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