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SI8251 데이터시트(PDF) 8 Page - Silicon Laboratories |
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SI8251 데이터시트(HTML) 8 Page - Silicon Laboratories |
8 / 30 page Si8250/1/2 8 Preliminary Rev. 0.8 Table 7. Peak Current Limit Detector Electrical Specifications TA = –40 to +125 °C, VDD = 2.5 V, SYSCLK = 25 MHz, PLLCLK = 200 MHz unless otherwise specified. Parameter Conditions Min Typ Max Units IPK Input to DPWM Output Latency 10 mV Overdrive — 45 — ns Threshold Detector Voltage VT[3:0] = 0000 35 50 65 mV VT[3:0] = 0001 85 100 115 VT[3:0] = 0010 135 150 165 VT[3:0] = 0011 185 200 215 VT[3:0] = 0100 235 250 265 VT[3:0] = 0101 285 300 315 VT[3:0] = 0110 335 350 365 VT[3:0] = 0111 485 400 415 VT[3:0] = 1000 435 450 465 VT[3:0] = 1001 485 500 515 VT[3:0] = 1010 535 550 565 VT[3:0] = 1011 585 600 615 VT[3:0] = 1100 635 650 665 VT[3:0] = 1101 685 700 715 VT[3:0] = 1110 735 750 765 VT[3:0] = 1111 785 800 815 Hysteresis HYST[1:0] = 00 — 0 — mV HYST[1:0] = 01 — 5 — HYST[1:0] = 10 — 10 — HYST[1:0] = 11 — 20 — Blanking Time LEB[1:0] = 00, fPLL = 200 MHz — 0 — ns LEB[1:0] = 01, fPLL =200 MHz — 20 — LEB[1:0] = 10, fPLL =200 MHz — 40 — LEB[1:0] = 11, fPLL = 200 MHz — 80 — Input Capacitance — 4.5 — pF Input Bias Current — 0.1 — µA Shutdown Supply Current Enable bit = 0 — 0.1 — µA Active Supply Current IIN = (Vt + 100 mVpp), 1.5 MHz sq. wave —100 — µA |
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