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WM8941 Datasheet(PDF) 9 Page - Wolfson Microelectronics plc |
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WM8941 Datasheet(HTML) 9 Page - Wolfson Microelectronics plc |
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9 / 96 page  Pre Production WM8941 w PP, Rev 3.3, December 2007 9 Test Conditions DCVDD=1.8V, DBVDD=3.3V, AVDD=3.3V, SPKVDD =3.3V, , VBVDD=3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Digital to Analogue Converter (DAC) to MONO Output with 10k Ω / 50pF load and DACVOL 0dB Full-scale output 1 DACVOL = 0dB 0.9*AVDD /3.3 AVDD/3.3 1.05*AVDD /3.3 Vrms A-weighted AVDD=SPKVDD=3.3V 98 dB Signal to Noise Ratio 3 SNR A-weighted AVDD=SPKVDD=2.5V 96 dB 0dBFS input AVDD=SPKVDD=3.3V -80 dBFS Total Harmonic Distortion 4 THD Total Harmonic Distortion + Noise 5 THD+N 0dBFS input AVDD=SPKVDD=3.3V -78 dBFS Channel Separation 6 1kHz signal 100 dB MICP and MICN input PGA to input boost stage into 10k Ω / 50pF load on SPKOUTP and SPKOUTP INPPGAVOL, PGABOOST = 0dB Full-scale output voltage, 0dB gain 0.9*SPKVDD/ 3.3 SPKVDD/3.3 1.05*SPKVD D/3.3 Vrms Signal to Noise Ratio 3 SNR A-weighted AVDD=SPKVDD=3.3V 98 dB Total Harmonic Distortion 4 THD full-scale signal AVDD=SPKVDD=3.3V -80 dBFS Total Harmonic Distortion + Noise 5 THD+N full-scale signal AVDD=SPKVDD=3.3V -78 dBFS Channel Separation 6 100 dB Speaker Output (SPKOUTP, SPKOUTN with 8 Ω bridge tied load) Output Power Po Output power is closely correlated with THD see below Po=150mW, RL = 8Ω SPKVDD=3.3V 0.03 68 % dB Total Harmonic Distortion 4 THD Po=350mW, RL = 8Ω SPKVDD=3.3V 2.944 -30.6 % dB Signal to Noise Ratio 3 SNR A-weighted SPKVDD=3.3V -98 dB Power Supply Rejection Ratio (50Hz-22kHz) PSRR RL = 8 Ω BTL 50 dB Headphone Output (SPKOUTP, SPKOUTN with resistive load to GND) Signal to Noise Ratio 3 SNR A-weighted SPKVDD=3.3V 98 dB Total Harmonic Distortion 4 THD Po=20mW, RL = 16Ω SPKVDD=3.3V 0.02 -72 % dB Video Buffer Maximum output voltage swing Vom f=100kHz, THD=1% 1.10 1.25 1.50 Vp-p Maximum Programmable Voltage Gain 7 Av RVBREF=187 Ω, ROUT=75Ω, RLOAD=75 Ω 5.08 6 7.94 dB Minimum Programmable Voltage Gain 7 Av RVBREF=187 Ω, ROUT=75Ω, RLOAD=75 Ω -0.92 0 1.94 dB Step Size 6 dB Differential gain DG Vin=1Vp-p -2.0 0.3 +2.0 % Differential phase DP Vin=1Vp-p -2.0 0.7 +2.0 Deg Signal to Noise Ratio VSNR +40 +60 +100 dB SYNC tip offset above GND VBDISOFF=0, Av = +6dB 0 40 75 mV |
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Similar Description - WM8941 |
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