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AD7719 Fiches technique(PDF) 4 Page - Analog Devices |
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AD7719 Fiches technique(HTML) 4 Page - Analog Devices |
4 / 40 page REV. 0 AD7719 –4– Parameter AD7719B Unit Test Conditions AUXILIARY CHANNEL (continued) Offset Error 3 ± 3 µV typ Selected Channel = AIN5/AIN6 Offset Error Drift vs. Temperature 4 ±10 nV/ °C typ Full-Scale Error 8, 9 ±0.75 LSB typ Gain Drift vs. Temperature 4 0.5 ppm/ °C typ Negative Full-Scale Error ± 1 LSB typ Power Supply Rejection (PSR) 70 dB min AIN = 1 V Input Range = ±2.5 V, Typically 80 dB ANALOG INPUTS Differential Input Voltage Ranges ±REFIN2 V nom ARN = 1 ±REFIN2/2 V nom ARN = 0 Absolute AIN Voltage Limits AGND – 30 mV V min Unbuffered Input AVDD + 30 mV V max Analog Input Current DC Input Current ±125 nA/V typ Input Current Varies with Input Voltage DC Input Current Drift ± 2 pA/V/ °C typ Normal-Mode Rejection 2, 6 @ 50 Hz 100 dB min 50 Hz ±1 Hz, SF = 82 @ 60 Hz 100 dB min 60 Hz ±1 Hz, SF = 68 Common-Mode Rejection @ DC 85 dB min Input Range = ±2.5 V, AIN = 1 V @ 50 Hz 2 90 dB min 50 Hz ±1 Hz, Range = 2.5 V, AIN = 1 V @ 60 Hz 2 90 dB min 60 Hz ±1 Hz, Range = 2.5 V, AIN = 1 V REFERENCE INPUT (REFIN2) With Respect to AGND REFIN2 Voltage 2.5 V nom REFIN2 Range 2 1 V min AVDD V max Reference DC Input Current 2 0.2 µA/V typ Reference DC Input Current Drift 0.003 nA/V/ °C typ EXCITATION CURRENT SOURCES (IEXC1 and IEXC2) Output Current 200 µA nom Initial Tolerance at 25 °C ±10 % typ Drift 20 ppm/ °C typ Initial Current Matching at 25 °C ± 1 % typ Matching between IEXC1 and IEXC2 No Load Drift Matching 1 ppm/ °C typ Line Regulation (AVDD) 2.1 µA/V max AVDD = 5 V ± 5%. Typically 1.25 µA/V Load Regulation 300 nA/V typ Output Compliance AVDD – 0.6 V max AGND –30 mV V min LOW-SIDE POWER SWITCHES (SW1 AND SW2) RON 5 Ω max AVDD = 5 V. Typically 3 Ω 7 Ω max AVDD = 3 V. Typically 4.5 Ω Allowable Current 2 20 mA max Continuous Current per Switch TEMPERATURE SENSOR Accuracy See TPC 5 °C typ TRANSDUCER BURNOUT AIN(+) Current –100 nA typ AIN(–) Current +100 nA typ Initial Tolerance @ 25 °C ±15 % typ Drift 0.03 %/ °C typ SYSTEM CALIBRATION 10, 2 Full-Scale Calibration Limit 1.05 × FS11 V max Zero-Scale Calibration Limit –1.05 × FS V min Input Span 0.8 × FS V min 2.1 × FS V max |
Numéro de pièce similaire - AD7719 |
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Description similaire - AD7719 |
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