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WM8983GEFL Datasheet(PDF) 6 Page - Wolfson Microelectronics plc |
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WM8983GEFL Datasheet(HTML) 6 Page - Wolfson Microelectronics plc |
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6 / 8 page  WM8983 Product Preview w PP Rev 1.1 August 2005 6 ELECTRICAL CHARACTERISTICS 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 Microphone Preamp Inputs (LIP, LIN, RIP, RIN, L2, R2) Full-scale Input Signal Level – single ended input configuration via L/RIN. Note1 VINFSSE PGABOOST = 0dB INPPGAVOL = 0dB 1.0 0 Vrms dBV Full-scale Input Signal Level – pseudo differential input configuration via L/RIP and L/R2. Note1 VINFSPD PGABOOST = 0dB INPPGAVOL = 0dB 0.707 -3 Vrms dBV Mic PGA equivalent input noise At 35.25dB gain 0 to 20kHz 150 uV Input resistance RMICIN Gain set to 35.25dB 1.6 k Ω Input resistance RMICIN Gain set to 0dB 47 k Ω Input resistance RMICIN Gain set to -12dB 75 k Ω Input resistance RMICIP RIP2INPPGA = 1 90 k Ω Input resistance RMICIP RIP2INPPGA = 0 90 k Ω Input Capacitance CMICIN 10 pF MIC Programmable Gain Amplifier (PGA) Programmable Gain -12 35.25 dB Programmable Gain Step Size Guaranteed monotonic 0.75 dB Mute Attenuation 100 dB Selectable Input Gain Boost (0/+20dB) Boost disabled 0 dB Gain Boost on PGA input Boost enabled 20 dB Gain range from AUXL/R or L/R2 input to boost/mixer -12 +6 dB Gain step size to boost/mixer 3 dB Auxilliary Analogue Inputs (AUXL, AUXR) Full-scale Input Signal Level (0dB) – note this is proportional to AVDD1 VINFS AVDD1/3.3 0 Vrms dBV RAUXINLMIN Left Input boost and mixer enabled, at max gain 4.3 k Ω RAUXINLTYP Left Input boost and mixer enabled, at 0dB gain 8.6 k Ω RAUXINLMAX Left Input boost and mixer enabled, at min gain 39.1 k Ω RAUXINRMIN Right Input boost, mixer and beep enabled, at max gain 3 k Ω RAUXINRTYP Right Input boost, mixer and beep enabled, at 0dB gain 6 k Ω Input Resistance RAUXINRMAX Right Input boost, mixer and beep enabled, at min gain 29 k Ω Input Capacitance CMICIN 10 pF Automatic Level Control (ALC) Target Record Level -22.5 -1.5 dB Programmable gain -12 35.25 |
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