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AD7817ARU 데이터시트(PDF) 5 Page - Analog Devices |
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AD7817ARU 데이터시트(HTML) 5 Page - Analog Devices |
5 / 20 page Data Sheet AD7817/AD7818 Rev. D | Page 5 of 20 Parameter AVersion1 BVersion1 SVersion1 Unit Test Conditions/Comments POWER REQUIREMENTS (AD7818 ONLY)6 V DD 5.5 V max For specified performance 2.7 V min I DD Logic inputs = 0 V or V DD Normal Operation 2 mA max 1.3 mA typical Using External Reference 1.75 mA max 2.5 V external reference connected Power-Down (V DD = 5 V) 10.75 µA max 6 µA typ Power-Down (V DD = 3 V) 4.5 µA max 2 µA typ Auto Power-Down Mode V DD = 3 V 10 SPS Throughput Rate 6.4 µW typ See the Power vs Throughput section for description of power dissipation in auto power-down mode 1 kSPS Throughput Rate 48.8 µW typ 10 kSPS Throughput Rate 434 µW typ Power-Down 13.5 µW max Typically 6 µW ANALOG INPUTS (AD7817/AD7818)7 Input Voltage Range V REF V REF V REF V max 0 0 0 V min Input Leakage ±1 ±1 ±1 µA min Input Capacitance 10 10 10 pF max LOGIC INPUTS (AD7817/AD7818)4 Input High Voltage, V INH 2.4 2.4 2.4 V min V DD = 5 V ±10% Input Low Voltage, V INL 0.8 0.8 0.8 V max V DD = 5 V ±10% Input High Voltage, V INH 2 2 2 V min V DD = 3 V ±10% Input Low Voltage, V INL 0.4 0.4 0.4 V max V DD = 3 V ±10% Input Current, I IN ±3 ±3 ±3 µA max Typically 10 nA, V IN = 0 V to VDD Input Capacitance, C IN 10 10 10 pF max LOGIC OUTPUTS (AD7817/AD7818)4 Output High Voltage, V OH I SOURCE = 200 µA 4 4 4 V min V DD = 5 V ± 10% 2.4 2.4 2.4 V min V DD = 3 V ± 10% Output Low Voltage, V OL I SINK = 200 µA 0.4 0.4 0.4 V max V DD = 5 V ± 10% 0.2 0.2 0.2 V max V DD = 3 V ± 10% High Impedance Leakage Current ±1 ±1 ±1 µA max High Impedance Capacitance 15 15 15 pF max 1 The B Version and the S Version only apply to the AD7817. The A Version applies to the AD7817 or the AD7818 (as stated in specification). 2 See Terminology. 3 The accuracy of the temperature sensor is affected by reference tolerance. The relationship between the two is explained in the Temperature Measurement Error Due to Reference Error section. 4 Sample tested during initial release and after any redesign or process change that may affect this parameter. 5 On-chip reference shuts down when external reference is applied. 6 These specifications are typical for AD7818 at temperatures above 85°C and with V DD greater than 3.6 V. 7 This refers to the input current when the part is not converting. Primarily due to the reverse leakage current in the ESD protection diodes. |
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