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WM9711 Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM9711 Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 66 page  Production Data WM9711L w PD Rev 4.1 April 2004 7 ELECTRICAL CHARACTERISTICS AUDIO OUTPUTS Test Conditions DBVDD=3.3V, DCVDD = 3.3V, AVDD=HPVDD=SPKVDD =3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 18-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT DAC to Line-Out (HPOUTL/R or MONOOUT 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 -87 -80 dB Power Supply Rejection PSRR 20Hz to 20kHz 50 dB Speaker Output (LOUT2/ROUT2 with 8 Ω Ω Ω Ω bridge tied load, INV=1) Output Power PO Output power is very closely correlated with THD; see below. Output Power at 1% THD PO 400 mW Abs. Max Output Power POmax 500 mW Total Harmonic Distortion THD PO=200mW -66 0.05 dB % Signal to Noise Ratio (A-weighted) SNR 90 100 dB Headphone Output (HPOUTL/R, OUT3 or LOUT2/ROUT2 with 16 Ω Ω Ω Ω or 32Ω Ω Ω Ω load) HPVDD=1.8V, RL=32 Ω 5 mW PO=10mW, RL=16 Ω -76 PO=10mW, RL=32 Ω -73 PO=20mW, RL=16 Ω -75 Total Harmonic Distortion (Note 1) THD PO=20mW, RL=32 Ω -78 dB Signal to Noise Ratio (A-weighted) SNR AVDD=3.3V 90 95 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 –76dB when output power is 10mW. Higher output power is possible, but will result in a deterioration in THD. |
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