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AD7147WPACPZ-RL Datasheet(PDF) 5 Page - Analog Devices |
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AD7147WPACPZ-RL Datasheet(HTML) 5 Page - Analog Devices |
5 / 71 page AD7147 Data Sheet SPECIFICATIONS VCC = 2.6 V to 3.6 V, TA = −40oC to +85°C, unless otherwise noted. Table 1. Parameter Min Typ Max Unit Test Conditions/Comments CAPACITANCE-TO-DIGITAL CONVERTER Update Rate 8.73 9 9.27 ms 12 conversion stages, decimation = 64 17.46 18 18.54 ms 12 conversion stages, decimation = 128 34.9 36 37.1 ms 12 conversion stages, decimation = 256 Resolution 16 Bits CINx Input Range ±8 pF No Missing Codes 16 Bits Guaranteed by design, but not production tested CINx Input Leakage 25 nA Maximum Output Load 20 pF Capacitance load on CINx to ground Total Unadjusted Error ±20 % Output Noise (Peak-to-Peak) 12 Codes Decimation rate = 64 7 Codes Decimation rate = 128 3 Codes Decimation rate = 256 Output Noise (RMS) 1.1 Codes Decimation rate = 64 0.8 Codes Decimation rate = 128 0.5 Codes Decimation rate = 256 CSTRAY Offset Range 20 pF CSTRAY Offset Resolution 0.32 pF Low Power Mode Delay Accuracy 4 % Percentage of 200 ms, 400 ms, 600 ms, or 800 ms ACSHIELD Frequency 250 kHz Output Voltage 0 VCC V Oscillating Short-Circuit Source Current 10 mA Short-Circuit Sink Current 10 mA Maximum Output Load 150 pF Capacitance load on ACSHIELD to ground LOGIC INPUTS (SDI, SCLK, CS, SDA, GPIO) VIH Input High Voltage 0.7 × VDRIVE V VIL Input Low Voltage 0.4 V IIH Input High Current −1 µA VIN = VDRIVE IIL Input Low Current 1 µA VIN = GND Hysteresis 150 mV OPEN-DRAIN OUTPUTS (SCLK, SDA, INT) VOL Output Low Voltage 0.4 V ISINK = −1 mA IOH Output High Leakage Current ±0.1 ±1 µA VOUT = VDRIVE LOGIC OUTPUTS (SDO, GPIO) VOL Output Low Voltage 0.4 V ISINK = 1 mA, VDRIVE = 1.65 V to 3.6 V VOH Output High Voltage VDRIVE − 0.6 V ISOURCE = 1 mA, VDRIVE = 1.65 V to 3.6 V GPIO, SDO Floating State Leakage Current ±1 µA Pin three-state, leakage measured to GND and VCC POWER VCC 2.6 3.3 3.6 V VDRIVE 1.65 3.6 V Serial interface operating voltage ICC 0.9 1 mA In full power mode, VCC + VDRIVE 15.5 21.5 µA Low power mode, converter idle, VCC + VDRIVE, decimation = 256 2.3 7.5 µA Full shutdown, VCC + VDRIVE Rev. E | Page 4 of 70 |
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