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WM8983 Datasheet(PDF) 8 Page - Wolfson Microelectronics plc |
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WM8983 Datasheet(HTML) 8 Page - Wolfson Microelectronics plc |
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8 / 8 page  WM8983 Product Preview w PP Rev 1.1 August 2005 8 Test Conditions DCVDD=1.8V, AVDD1=AVDD2=DBVDD=AVDD2=3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Speaker Output (LOUT2, ROUT2 with 8 Ω Ω Ω Ω bridge tied load, INVROUT2=1) SPKBOOST=0 AVDD2/ 3.3 Full scale output voltage, 0dB gain. (Note 9) SPKBOOST=1 (AVDD2/ 3.3)*1.5 Vrms Output Power PO Output power is very closely correlated with THD; see below PO =200mW, RL = 8 Ω, AVDD2=3.3V 0.04 -68 % dB PO =320mW, RL = 8 Ω, AVDD2=3.3V 1.0 -40 % dB PO =500mW, RL = 8 Ω, AVDD2=5V 0.02 -74 % dB Total Harmonic Distortion THD PO =860mW, RL = 8 Ω, AVDD2=5V 1.0 -40 % dB AVDD2=3.3V, RL = 8 Ω 90 dB Signal to Noise Ratio SNR AVDD2=5V, RL = 8 Ω 90 dB RL = 8 Ω BTL 80 dB Power Supply Rejection Ratio (50Hz-22kHz) PSRR RL = 8 Ω BTL AVDD2=5V (boost) 69 dB AVDD2 = 5V Other supplies disconnected TBD SPKVDD Leakage Current AVDD2 = 5V Other supplies = 0V TBD uA OUT3/OUT4 outputs (with 10k Ω Ω Ω Ω / 50pF load) OUT3BOOST=0/ OUT4BOOST=0 AVDD2/3.3 Vrms Full-scale output voltage, 0dB gain (Note 9) OUT3BOOST=1/ OUT4BOOST=1 1.5 x AVDD2/3.3 Vrms Signal to Noise Ratio (Note 5,6) SNR A-weighted 98 dB Signal to Noise Ratio SNR 22Hz to 22kHz 97.5 dB Total Harmonic Distortion (Note 7) THD RL = 10 k Ω full-scale signal -84 dB Channel Separation (Note 8) 1kHz signal 80 100 dB RL = 10k Ω 52 dB Power Supply Rejection Ratio (50Hz-22kHz) PSRR RL = 10k Ω, AVDD2=5V 56 dB Microphone Bias MBVSEL=0 0.9*AVDD1 V Bias Voltage VMICBIAS MBVSEL=1 0.65*AVDD1 V Bias Current Source IMICBIAS for VMICBIAS within +/-3% 3 mA Output Noise Voltage Vn 1kHz to 20kHz 15 nV/ √Hz Digital Input / Output Input HIGH Level VIH 0.7 ×DBV DD V Input LOW Level VIL 0.3 ×DBVDD V Output HIGH Level VOH IOL=1mA 0.9 ×DBV DD V Output LOW Level VOL IOH-1mA 0.1xDBVDD V Input capacitance TBD pF Input leakage TBD pA |
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