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AD7730LBRU Datasheet(PDF) 2 Page - Analog Devices |
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AD7730LBRU Datasheet(HTML) 2 Page - Analog Devices |
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2 / 52 page  –2– REV. A Parameter B Version 1 Units Conditions/Comments STATIC PERFORMANCE (CHP = 1) No Missing Codes 2 24 Bits min Output Noise and Update Rates 2 See Tables I & II Integral Nonlinearity 18 ppm of FSR max Offset Error 2 See Note 3 Offset Error and Offset Drift Refer to Both Offset Drift vs. Temperature 2 5 nV/ °C typ Unipolar Offset and Bipolar Zero Errors Offset Drift vs. Time 4 25 nV/1000 Hours typ Positive Full-Scale Error 2, 5 See Note 3 Positive Full-Scale Drift vs Temp 2, 6, 7 2 ppm of FS/ °C max Positive Full-Scale Drift vs Time 4 10 ppm of FS/1000 Hours typ Gain Error 2, 8 See Note 3 Gain Drift vs. Temperature 2, 6, 9 2 ppm/ °C max Gain Drift vs. Time 4 10 ppm/1000 Hours typ Bipolar Negative Full-Scale Error 2 See Note 3 Negative Full-Scale Drift vs. Temp 2, 6 2 ppm of FS/ °C max Power Supply Rejection 120 dB typ Measured with Zero Differential Voltage Common-Mode Rejection (CMR) 120 dB min At DC. Measured with Zero Differential Voltage Analog Input DC Bias Current 2 50 nA max Analog Input DC Bias Current Drift 2 100 pA/ °C typ Analog Input DC Offset Current 2 10 nA max Analog Input DC Offset Current Drift 2 50 pA/ °C typ STATIC PERFORMANCE (CHP = 0) 2 No Missing Codes 24 Bits min SKIP = 0 10 Output Noise and Update Rates See Tables III & IV Integral Nonlinearity 18 ppm of FSR max Offset Error See Note 3 Offset Error and Offset Drift Refer to Both Offset Drift vs. Temperature 6 0.5 µV/°C typ Unipolar Offset and Bipolar Zero Errors Offset Drift vs. Time 4 2.5 µV/1000 Hours typ Positive Full-Scale Error 5 See Note 3 Positive Full-Scale Drift vs. Temp 6, 7 0.6 µV/°C typ Positive Full-Scale Drift vs. Time 4 3 µV/1000 Hours typ Gain Error 8 See Note 3 Gain Drift vs. Temperature 6, 9 2 ppm/ °C typ Gain Drift vs. Time 4 10 ppm/1000 Hours typ Bipolar Negative Full-Scale Error See Note 3 Negative Full-Scale Drift vs. Temp 0.6 µV/°C typ Power Supply Rejection 90 dB typ Measured with Zero Differential Voltage Common-Mode Rejection (CMR) on AIN 100 dB typ At DC. Measured with Zero Differential Voltage CMR on REF IN 120 dB typ At DC. Measured with Zero Differential Voltage Analog Input DC Bias Current 60 nA max Analog Input DC Bias Current Drift 150 pA/ °C typ Analog Input DC Offset Current 30 nA max Analog Input DC Offset Current Drift 100 pA/ °C typ ANALOG INPUTS/REFERENCE INPUTS Normal-Mode 50 Hz Rejection 2 88 dB min From 49 Hz to 51 Hz Normal-Mode 60 Hz Rejection 2 88 dB min From 59 Hz to 61 Hz Common-Mode 50 Hz Rejection 2 120 dB min From 49 Hz to 51 Hz Common-Mode 60 Hz Rejection 2 120 dB min From 59 Hz to 61 Hz Analog Inputs Differential Input Voltage Ranges 11 Assuming 2.5 V or 5 V Reference with HIREF Bit Set Appropriately 0 to +10 or ±10 mV nom Gain = 250 0 to +20 or ±20 mV nom Gain = 125 0 to +40 or ±40 mV nom Gain = 62.5 0 to +80 or ±80 mV nom Gain = 31.25 Absolute/Common-Mode Voltage 12 AGND + 1.2 V V min AVDD – 0.95 V V max Reference Input REF IN(+) – REF IN(–) Voltage +2.5 V nom HIREF Bit of Mode Register = 0 REF IN(+) – REF IN(–) Voltage +5 V nom HIREF Bit of Mode Register = 1 Absolute/Common-Mode Voltage 13 AGND – 30 mV V min AVDD + 30 mV V max NO REF Trigger Voltage 0.3 V min NO REF Bit Active If VREF Below This Voltage 0.65 V max NO REF Bit Inactive If VREF Above This Voltage AD7730–SPECIFICATIONS (AVDD = +5 V, DVDD = +3 V or +5 V; REF IN(+) = AVDD; REF IN(–) = AGND = DGND = 0 V; fCLK IN = 4.9152 MHz. All specifications TMIN to TMAX unless otherwise noted.) |
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