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数据搜索系统，热门电子元器件搜索 |
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WM9713 数据表(PDF) 8 Page - Wolfson Microelectronics plc |
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WM9713 数据表(HTML) 8 Page - Wolfson Microelectronics plc |
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8 / 111 page  WM9713L Preliminary Technical Data 1 PTD, March 2004, Rev 2.2 8 ELECTRICAL CHARACTERISTICS AUDIO OUTPUTS Test Conditions DBVDD=3.3V, DCVDD = 3.3V, AVDD=HPVDD=SPKVDD =3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT DAC to Line-Out (HPL/R or MONO with 10k Ω Ω Ω Ω / 50pF load) Full-scale output AVDD = 3.3V, PGA gains set to 0dB 1 V rms Signal to Noise Ratio (A-weighted) SNR 85 94 dB Total Harmonic Distortion THD -3dB output -85 -74 dB Power Supply Rejection PSRR 100mV, 20Hz to 20kHz signal on AVDD 50 dB Speaker Output (SPKL/SPKR with 8 Ω Ω Ω Ω bridge tied load, INV=1) Output Power at 1% THD PO THD = 1% 400 mW (rms) Abs. max output power POmax 500 mW (rms) Total Harmonic Distortion THD PO = 200mW -66 0.05 dB % Signal to Noise Ratio (A-weighted) SNR 90 dB Stereo Speaker Output (SPKL/OUT4 and SPKR/OUT3 with 8 Ω Ω Ω Ω bridge tied load, INV=1) Output Power at 1% THD PO THD = 1% 400 mW (rms) Abs. max output power POmax 500 mW (rms) Total Harmonic Distortion THD PO = 200mW -66 0.05 dB % Signal to Noise Ratio (A-weighted) SNR 90 dB Headphone Output (HPL/R, OUT3/4 or SPKL/SPKR with 16 Ω Ω Ω Ω or 32Ω Ω Ω Ω load) Output Power per channel PO Output power is very closely correlated with THD; see below. PO=10mW, RL=16 Ω -80 PO=10mW, RL=32 Ω -80 PO=20mW, RL=16 Ω -78 Total Harmonic Distortion THD PO=20mW, RL=32 Ω -79 dB Signal to Noise Ratio (A-weighted) SNR 90 dB Note: 1. All THD values are valid for the output power level quoted above – for example, at HPVDD=3.3V and RL=16 Ω, THD is –80dB when output power is 10mW. Higher output power is possible, but will result in a deterioration in THD. |
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