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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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WM8946ECS/R 데이터시트(PDF) 10 Page - Wolfson Microelectronics plc |
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WM8946ECS/R 데이터시트(HTML) 10 Page - Wolfson Microelectronics plc |
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10 / 175 page  WM8946 Production Data w PD, July 2012, Rev 4.3 10 ELECTRICAL CHARACTERISTICS Test Conditions DCVDD = 1.8V, DBVDD = LDOVDD = SPKVDD = 3.3V, LDOVOUT = 3.0V, GND = 0V, TA = +25 oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Analogue Inputs (IN1L, IN2L, IN1R, IN2R) Maximum input signal level (changes in proportion to LDOVOUT) Single-ended input 1.0 0 Vrms dBV Pseudo-differential input 0.7 -3.1 Vrms dBV Input resistance (IN1L, IN1R) +35.25dB gain 3.5 k 0dB gain 104 k -12dB gain 166 k Input resistance (IN2L, IN2R) All gain settings 96 k Input capacitance 10 pF Analogue Inputs (AUX1, AUX2) Maximum input signal level (changes in proportion to LDOVOUT) AUX1 or AUX2 enabled as audio input 1.0 0 Vrms dBV Input resistance Input mixer path (0dB) 100 k Output mixer / direct speaker path (0dB) 15 k Output mixer / direct speaker path (-6dB) 30 k Input capacitance 10 pF Analogue Inputs Programmable Gain Amplifiers (PGAs) Minimum programmable gain -12 dB Maximum programmable gain 35.25 dB Gain step size Guaranteed monotonic 0.75 dB Mute attenuation 92 dB Common Mode Rejection Ratio 1kHz input 110 dB Speaker Output Programmable Gain Amplifiers (PGAs) Minimum programmable gain -57 dB Maximum programmable gain 6 dB Gain step size Guaranteed monotonic 1 dB Mute attenuation 71 dB ADC Input Path Performance (Input PGAs to ADC) SNR (A-weighted) 84 94 dB THD -1dBFS input -83 -75 dB THD+N -1dBFS input -77 -70 dB Channel separation (Left/Right) 95 dB PSRR (with respect to LDOVDD) 217Hz 1kHz 77 90 dB |
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