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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8351 датащи(PDF) 24 Page - Wolfson Microelectronics plc |
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WM8351 датащи(HTML) 24 Page - Wolfson Microelectronics plc |
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24 / 330 page  WM8351 Production Data w PD, April 2012, Rev 4.5 24 7.9 DIGITAL INTERFACES Test Conditions TA = +25ºC unless otherwise noted. PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT SDA, SCLK, MCLK, BCLK, LRCLK, ADCDATA, DACDATA, GPIO4 to GPIO9 Input HIGH Level VIH 0.7 DBVDD V Input LOW Level VIL 0.3 DBVDD V Output HIGH Level VOH sinking 1mA 0.9 DBVDD V Output LOW Level VOL sourcing 1mA 0.1xDBVDD V 7.10 AUXILIARY ADC Test Conditions TA = +25ºC unless otherwise noted. PARAMETER CONDITIONS SYMBOL MIN TYP MAX UNITS Input resistance (AUX1,2,3,4, USB, LINE, BATT and CHIPTEMP) AUXADC_SCALEn [1:0] = 00 ∞ ∞ ∞ Ω AUXADC_SCALEn [1:0] = 01 2.2 kΩ AUXADC_SCALEn [1:0]= 10 330 660 kΩ AUXADC_SCALEn [1:0] = 11 330 440 kΩ Input Voltage range. AUX1,2,3,4,USB,LINE,BATT and CHIPTEMP (VRTC = 2.7V & VLINE (max)= 5.5V, VBG=1.25V) AUXADC_SCALEn [1:0] = 01 AUXADC_REF = 0 VBG V AUXADC_SCALEn [1:0] = 01 AUXADC_REF = 1 VRTC V AUXADC_SCALEn [1:0] = 10 AUXADC_REF = 0 2 x VBG V AUXADC_SCALEn [1:0] = 10 AUXADC_REF = 1 2 x VRTC V AUXADC_SCALEn [1:0] = 11 AUXADC_REF = 0 VLINE V AUXADC_SCALEn [1:0] = 11 AUXADC_REF = 1 4 x VBG V Input capacitance (AUX1,2,3,4, USB, LINE, BATT and CHIPTEMP) Input is selected (INPUT_SELECT) and AUXADC_SCALEn [1:0] not = 00 2.08 pF VRTC quiescent current AUX_RBMODE = 0, AUXADC_ENA = 1 140 A VRTC quiescent current AUX_RBMODE = 1 AUXADC_ENA = 1 151 A LINE_INT quiescent current <<1 mA ADCCLK frequency fAUXCLK 400 470/512 800 kHz ADC Resolution 12 bits ADC Conversion Time 13 CLK periods Aux ADC accuracy Non-calibrated (calibration possible using the VBG input on AUX3). 1% of this variation due to BG variation over temperature. 2.2 % |
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