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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADBMS6821 датащи(PDF) 6 Page - Analog Devices |
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ADBMS6821 датащи(HTML) 6 Page - Analog Devices |
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6 / 28 page  Data Sheet ADBMS6821/ADBMS6822 SPECIFICATIONS analog.com Rev. B | 6 of 28 ISOSPI DC SPECIFICATIONS TJ = −40°C to +125°C, VDDS = 3 V, VDD = VP = 5 V, unless otherwise noted. Table 6. isoSPI DC Specifications Parameter Symbol Test Conditions/Comments Min Typ Max Unit LEAKAGE CURRENTS ILEAK(IP/IM) 0 V to 5 V, idle state 10 µA COMMON-MODE VOLTAGE VCM TA = 25°C, IP/IM not driving 3.2 V PIN RESISTANCE RIN Ready state, 0 V < IP voltage (VIP), IM voltage (VIM) < 5.5 V 100 kΩ TRANSMITTER Pulse Amplitude VA VA = |VIP − VIM|, termination resistance = 50 Ω 1 1.25 1.6 V Drive Current IDRV VCM set by the driver 25 mA RECEIVER THRESHOLD VOLTAGE VRx 300 mV ISOSPI IDLE/WAKE-UP SPECIFICATIONS TJ = −40°C to +125°C, VDDS = 3 V, VDD = VP = 5 V, unless otherwise noted. Table 7. isoSPI Idle/Wake-Up Specifications Parameter Symbol Test Conditions/Comments Min Typ Max Unit WAKE-UP Differential Wake-Up Voltage VWAKE tDWELL ≥ 240 ns 400 mV Dwell Time at VWAKE tDWELL VWAKE ≥ 400 mV 240 ns Start-Up Time After Wake Detection tREADY 10 µs IDLE TIMEOUT DURATION tIDLE 4.3 5.5 6.7 ms READY STATE TO LISTEN STATE TIMEOUT tLISTEN MSTR = 0, XCVRMD = 20 kΩ 250 µs TIMING SPECIFICATIONS isoSPI Pulse Timing Specifications TJ = −40°C to +125°C, VDDS = 3 V, VDD = VP = 5 V, unless otherwise noted. Table 8. isoSPI Pulse Timing Specifications Parameter Symbol Test Conditions/Comments Min Typ Max Unit CHIP SELECT Half-Pulse Width t½PW(CS) Transmitter 120 150 180 ns Signal Filter tFILT(CS) Receiver 70 90 110 ns Pulse-Inversion Delay tINV(CS) Transmitter 120 155 190 ns Valid-Pulse Window tWNDW(CS) Receiver 220 270 330 ns Chip-Select Response Delay tDEL(CS) Receiver 140 190 ns DATA Half-Pulse Width t½PW(D) Transmitter 40 50 60 ns Signal Filter tFILT(D) Receiver 10 20 30 ns Pulse-Inversion Delay tINV(D) Transmitter 40 55 70 ns Valid-Pulse Window tWNDW(D) Receiver 70 90 110 ns Data-Response Delay tDEL(D) Receiver 75 120 ns |
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