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WM8986GECO/RV Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8986GECO/RV Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 87 page  Pre-Production WM8986 w PP, Rev 3.1, February 2007 7 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD=1.8V, AVDD1=AVDD2=DBVDD=3.3V, TA = +25 oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Microphone Input PGA Inputs (LIP, LIN, RIP, RIN) INPPGAVOLL, INPPGAVOLR, PGABOOSTL and PGABOOSTR = 0dB Full-scale Input Signal Level – Single-ended input via LIN/RIN 1 AVDD/3.3 Vrms Full-scale Input Signal Level – Pseudo-differential input 1,2 AVDD*0.7/ 3.3 Vrms Input PGA equivalent input noise INPPGAVOLL/R = +35.25dB No input signal 0 to 20kHz 150 µV LIN, RIN input resistance INPPGAVOLL and INPPGAVOLR = +35.25dB 1.6 k Ω LIN, RIN input resistance INPPGAVOLL and INPPGAVOLR = 0dB 46 k Ω LIN, RIN input resistance INPPGAVOLL and INPPGAVOLR = -12dB 71 k Ω LIP, RIP input resistance All gain settings 90 k Ω Input Capacitance All analogue input pins 10 pF Input PGA Programmable Gain Gain adjusted by INPPGAVOLL and INPPGAVOLL -12 +35.25 dB Programmable Gain Step Size Guaranteed monotonic 0.75 dB Input PGA Mute Attenuation INPPGAMUTEL and INPPGAMUTER = 1 100 dB Input Gain Boost PGABOOSTL and PGABOOSTR = 0 0 dB Input Gain Boost PGABOOSTL and PGABOOSTR = 1 +20 dB Auxiliary Analogue Inputs (AUXL, AUXR) Full-scale Input Signal Level 2 AVDD/3.3 Vrms Left Input boost and mixer enabled, at +6dB 11 k Ω Left Input boost and mixer enabled, at 0dB gain 22 k Ω Left Input boost and mixer enabled, at -12dB gain 60 k Ω Right Input boost, mixer enabled, at +6dB gain 11 k Ω Right Input boost, mixer enabled, at 0dB gain 22 k Ω Input Resistance Right Input boost, mixer enabled, at -12dB gain 60 k Ω Input Capacitance All analogue Inputs 10 pF Gain range from AUXL and AUXR input to left and right input PGA mixers Gain adjusted by AUXL2BOOSTVOL and AUXR2BOOSTVOL -12 +6 dB AUXLBOOSTVOL and AUXRBOOSTVOL step size 3 dB |
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