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ST-PLC-AFE 数据表(PDF) 23 Page - STMicroelectronics |
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ST-PLC-AFE 数据表(HTML) 23 Page - STMicroelectronics |
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23 / 58 page ![]() DocID028727 Rev 1 23/58 ST-PLC-AFE Electrical characteristics 58 Table 8. Digital domain Symbol Parameter Conditions Min. Typ. Max. Unit Digital inputs (nCS, EN, SCLK, DIN, and DAC_CLK) VIH High-level input voltage 0.25 x VDVDD V VIL Low-level input voltage 0.75 x. VDVDD Digital outputs (DOUT and INT) VOH High-level output voltage Source current, IOH = 2 mA VDVDD – 0.45 VDVDD V VOL Low-level output voltage Sink current, IOL = - 2 mA GND GND + 0.45 Table 9. Zero crossing detector Symbol Parameter Conditions Min. Typ. Max. Unit VIN_ZCR DC input, ZC1_IN; ZC2_IN AGND – 0.3 AVDD + 0.3 V VTHR_ZCR Rising threshold 0.9 1 VTHF_ZCR Falling threshold 0.45 0.55 CIN_ZCR Input capacitance 3 pF VOH_ZCR High-level output ZC1_OUT; ZC2_OUT IOL = 3 mA DVDD – 0.3 DVDD V VOL_ZCR Low-level output ZC1_OUT; ZC2_OUT IOH = - 3 mA DGND DGND + 0.3 |
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