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AD7843ARU Fiches technique(PDF) 4 Page - Analog Devices |
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AD7843ARU Fiches technique(HTML) 4 Page - Analog Devices |
4 / 21 page AD7843 Rev. B | Page 3 of 20 SPECIFICATIONS VCC = 2.7 V to 3.6 V, VREF = 2.5 V, fSCLK = 2 MHz, TA = −40°C to +85°C, unless otherwise noted. Table 1. Parameter AD7843A1 Unit Test Conditions/Comments DC ACCURACY Resolution 12 Bits No Missing Codes 11 Bits min Integral Nonlinearity2 ±2 LSB max Offset Error2 ±6 LSB max VCC = 2.7 V Offset Error Match3 1 LSB max 0.1 LSB typ Gain Error2 ±4 LSB max Gain Error Match3 1 LSB max 0.1 LSB typ Power Supply Rejection 70 dB typ SWITCH DRIVERS On-Resistance2 Y+, X+ 5 Ω typ Y−, X− 6 Ω typ ANALOG INPUT Input Voltage Ranges 0 to VREF V DC Leakage Current ±0.1 µA typ Input Capacitance 37 pF typ REFERENCE INPUT VREF Input Voltage Range 1.0/+VCC V min/max DC Leakage Current ±1 µA max VREF Input Impedance 5 GΩ typ CS = GND or +VCC VREF Input Current3 20 µA max 8 µA typ 1 µA typ fSAMPLE = 12.5 kHz 1 µA max CS = +VCC; 0.001 µA typ LOGIC INPUTS Input High Voltage, VINH 2.4 V min Input Low Voltage, VINL 0.4 V max Input Current, IIN ±1 µA max Typically 10 nA, VIN = 0 V or +VCC Input Capacitance, CIN4 10 pF max LOGIC OUTPUTS Output High Voltage, VOH VCC − 0.2 V min ISOURCE = 250 µA; VCC = 2.2 V to 5.25 V Output Low Voltage, VOL 0.4 V max ISINK = 250 µA PENIRQ Output Low Voltage, VOL 0.4 V max ISINK = 250 µA; 100 kW pull-up Floating-State Leakage Current ±10 µA max Floating-State Output Capacitance4 10 pF max Output Coding Straight (Natural) Binary CONVERSION RATE Conversion Time 12 DCLK Cycles max Track-and-Hold Acquisition Time 3 DCLK Cycles min Throughput Rate 125 kSPS max Footnotes on next page. |
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