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WM8956 Datasheet(PDF) 7 Page - Wolfson Microelectronics plc |
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WM8956 Datasheet(HTML) 7 Page - Wolfson Microelectronics plc |
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7 / 80 page  Preliminary Technical Data WM8956 w PTD, July 2007, Rev 2.1 7 Test Conditions DCVDD = 1.8V, DBVDD = 3.3V, AVDD = SPKVDD1 = SPKVDD2 = 3.3V, 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 (LINPUT1/2 Differential, RINPUT1/2 Differential) to Line-Out (HP_L, HP_R, OUT3 with 10k Ω / 50pF load) AVDD = 3.3V 99 Signal to Noise Ratio (A-weighted) SNR AVDD = 2.7V 99 dB Full Scale Input Signal, AVDD = 3.3V -93 0.002 Total Harmonic Distortion Plus Noise THD+N Full Scale Input Signal, AVDD = 2.7V -94 0.002 dB % Analogue Inputs (LINPUT2, RINPUT2) via Boost to Line-Out (HP_L, HP_R, OUT3 with 10k Ω / 50pF load) AVDD = 3.3V 102 Signal to Noise Ratio (A-weighted) SNR AVDD = 2.7V 102 dB Full Scale Input Signal, AVDD = 3.3V -93 0.002 Total Harmonic Distortion Plus Noise THD+N Full Scale Input Signal, AVDD = 2.7V -94 0.002 dB % Analogue Inputs (LINPUT3, RINPUT3) via Bypass to Line-Out (HP_L, HP_R, OUT3 with 10k Ω / 50pF load) AVDD = 3.3V 104 dB Signal to Noise Ratio (A-weighted) SNR AVDD = 2.7V 104 Full Scale Input Signal, AVDD = 3.3V -96 0.002 Total Harmonic Distortion Plus Noise THD+N Full Scale Input Signal, AVDD = 2.7V -97 0.001 dB % Analogue Inputs (LINPUT1, RINPUT1, LINPUT2, RINPUT2, LINPUT3, RINPUT3) to Line-Out (HP_L, HP_R, OUT3 with 10k Ω / 50pF load) 1kHz full scale signal to HP_L/R outputs via L/RINPUT1, MIC amp (single-ended) and boost 98 dB 1kHz full scale signal to HP_L/R outputs via L/RINPUT2 and boost 90 dB Channel Separation 1kHz full scale to HP_L/R outputs via L/RINPUT3 and boost 96 dB 1kHz on LINPUT2/RINPUT2 to input boost mixer via MIC PGA 90 dB Boost / Bypass Separation (Quiescent LINPUT3/RINPUT3 to HP outputs via bypass) 1kHz on LINPUT1/RINPUT1 to input boost mixer via MIC PGA 90 dB Channel Matching 1kHz signal 0.2 dB |
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