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AD9520-1/PCBZ データシート(PDF) 13 Page - Analog Devices |
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AD9520-1/PCBZ データシート(HTML) 13 Page - Analog Devices |
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13 / 80 page ![]() Data Sheet AD9520-1 Rev. B | Page 13 of 80 SERIAL CONTROL PORT—SPI MODE Table 13. Parameter Min Typ Max Unit Test Conditions/Comments CS (INPUT) CS has an internal 30 kΩ pull-up resistor Input Logic 1 Voltage 2.0 V Input Logic 0 Voltage 0.8 V Input Logic 1 Current 3 µA Input Logic 0 Current −110 µA The minus sign indicates that current is flowing out of the AD9520-1, which is due to the internal pull-up resistor Input Capacitance 2 pF SCLK (INPUT IN SPI MODE) SCLK has an internal 30 kΩ pull-down resistor in SPI mode but not in I2C mode Input Logic 1 Voltage 2.0 V Input Logic 0 Voltage 0.8 V Input Logic 1 Current 110 µA Input Logic 0 Current 1 µA Input Capacitance 2 pF SDIO (INPUT IN BIDIRECTIONAL MODE) Input Logic 1 Voltage 2.0 V Input Logic 0 Voltage 0.8 V Input Logic 1 Current 1 µA Input Logic 0 Current 1 µA Input Capacitance 2 pF SDIO, SDO (OUTPUTS) Output Logic 1 Voltage 2.7 V Output Logic 0 Voltage 0.4 V TIMING Clock Rate (SCLK, 1/tSCLK) 25 MHz Pulse Width High, tHIGH 16 ns Pulse Width Low, tLOW 16 ns SDIO to SCLK Setup, tDS 4 ns SCLK to SDIO Hold, tDH 0 ns SCLK to Valid SDIO and SDO, tDV 11 ns CS to SCLK Setup and Hold, tS, tC 2 ns CS Minimum Pulse Width High, tPWH 3 ns |
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