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WM8758CBGEFL/RV Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8758CBGEFL/RV Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 90 page  Production Data WM8758B w PD, Rev 4.4, January 2012 7 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD=1.8V, AVDD1=AVDD2=3.0V, 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 Preamp Inputs (LIP, LIN, RIP, RIN, L2, R2) Full-scale Input Signal Level – Single-ended input via LIN/RIN VINFS PGABOOST = 0dB INPPGAVOL = 0dB AVDD1/3.3 Vrms Full-scale Input Signal Level – Pseudo-differential input VINFS PGABOOST = 0dB INPPGAVOL = 0dB AVDD1*0.7/ 3.3 Vrms Mic PGA equivalent input noise At 35.25dB gain 0 to 20kHz 150 uV Input resistance (LIN, RIN) RMICIN Gain set to 35.25dB 1.6 k Input resistance (LIN, RIN) RMICIN Gain set to 0dB 46 k Input resistance (LIN, RIN) RMICIN Gain set to -12dB 71 k Input resistance (LIP, RIP) RMICIP 90 k Input resistance (L2, R2) RL2R2 L/RIP2INPPGA = 1, L/R2_2BOOSTVOL = 000 90 k Input resistance (L2, R2) RL2R2 L/RIP2INPPGA = 0, Gain set to 6dB 11 k Input resistance (L2, R2) RL2R2 L/RIP2INPPGA = 0, Gain set to 0dB 22 k Input resistance (L2, R2) RL2R2 L/RIP2INPPGA = 0, Gain set to -12dB 60 k Input Capacitance CMICIN 10 pF Maximum Programmable Gain +35.25 dB Minimum Programmable Gain -12 dB Programmable Gain Step Size Guaranteed monotonic 0.75 dB MIC Mute Attenuation INPPGAMUTEL/R=1 100 dB MIC Gain Boost PGABOOSTL/R=0 0 dB PGABOOSTL/R=1 20 dB L2, R2 Line Input Programmable Gain Maximum Gain from L/R2 input to boost/mixer Gain adjusted by L2_2BOOSTVOL R2_2BOOSTVOL +6 dB Minimum Gain from L/R2 input to boost/mixer Gain adjusted by L2_2BOOSTVOL R2_2BOOSTVOL -12 dB L2/R2 boost step size Guaranteed monotonic 3 dB L2/R2 Mute attenuation 100 dB OUT4 to Left or Right Input Boost Record Path Maximum Gain +6 dB Minimum Gain -12 dB Gain step size Guaranteed monotonic 3 dB Mute attenuation 100 dB Automatic Level Control (ALC) Target Record Level -22.5 -1.5 dB Programmable gain -12 35.25 |
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