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LTC2971 Datasheet(PDF) 7 Page - Analog Devices |
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LTC2971 Datasheet(HTML) 7 Page - Analog Devices |
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7 / 114 page  LTC2971 7 Rev. 0 For more information www.analog.com ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. VVPWR = 12V, VVDDIO = VVDD33,VDD33, VDD25, REFP, and REFM pins floating, unless otherwise indicated. CVDD33 = 100nF, CVDD25 = 100nF, and CREF = 100nF. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS TUE_ADC_ VOUT Total Unadjusted Error Voltage Sense Inputs (Note 3) 10V ≤ |VIN_ADC| ≤ 60V l ±0.25 % of Reading 0V ≤ |VIN_ADC| ≤ 10V l ±25 mV LTC2971-3, 1V ≤ VVOUT_SNS1 – VGNDSNS1 ≤ 1.8V l ±0.25 % of Reading LTC2971-3, 0V ≤ VVOUT_SNS1 – VGNDSNS1 ≤ 1V ±2.5 mV TUE_ADC_ IOUT Total Unadjusted Error Current Sense Inputs (Note 3) Mfr_config_imon_sel = 0 20mV ≤ |VIN_ADC| ≤ 80mV l ±0.6 % of Reading Mfr_config_imon_sel = 0 |VIN_ADC| ≤ 20mV l ±120 µV Mfr_config_imon_sel = 1 VIN_ADC ≥ 1V l ±0.25 % of Reading Mfr_config_imon_sel = 1 0 ≤ VIN_ADC ≤ 1V l ±2.5 mV VOS_ADC Offset Error VIOUT_SNSPn = VIOUT_SNSMn, VOS • IOUT_CAL_GAIN, IOUT_CAL_GAIN = 1000mΩ Mfr_config_imon_sel = 0 l ±70 μV CMRR_IOUT DC CMRR |VIOUT_SNSPn – VIOUT_SNSMn| = 80mV, over Single-Ended Voltage Range 135 dB LC2971-3, |VIOUT_SNSP1 – VIOUT_SNSM1| = 80mV, over Single-Ended Voltage Range 100 dB AC CMRR |VIOUT_SNSPn – VIOUT_SNSMn| = 80mV, |VIOUT_SNSPn| = 12V ± 80mV, f=62.5kHz 92 dB tCONV_ADC Conversion Time (Note 8) VOUT_SNSn, GNDSNSn, VIN_SNS Inputs 6.15 ms IOUT_SNSPn, IOUT_SNSMn, IIN_SNSPn, IIN_SNSMn, Inputs Mfr_config_imon_sel = 0 24.6 ms IOUT_SNSPn, IOUT_SNSMn Inputs Mfr_config_imon_sel = 1 6.15 ms Internal Temperature (READ_TEMPERATURE_2) 24.6 ms tUPDATE_ADC Update Time (Note 8) Mfr_ein_config_hd = 0 135 ms Mfr_ein_config_hd = 1 305 ms fIN_ADC Input Sampling Frequency 62.5 kHz Sense Input Characteristics (Note 9) RIN_VSENSE Input Resistance VOUT_SNSn and GNDSNSn Inputs l 400 500 625 kΩ LTC2971-3 VOUT_SNS1 and GNDSNS1 Inputs l 500 kΩ IIN_IOUT_SNS Input Current IOUT_SNSPn and IOUT_SNSMn Inputs Mfr_config_imon_sel = 0 l ±10 μA IOUT_SNSPn and IOUT_SNSMn Inputs Mfr_config_imon_sel = 1 l ±1 μA Differential Input Current IOUT_SNSPn and IOUT_SNSMn Inputs, |VIN_DIFF| = 80mV, Mfr_config_imon_sel = 0 l ±0.1 μA IOUT_SNSPn and IOUT_SNSMn Inputs, |VIN_DIFF| = 80mV, Mfr_config_imon_sel = 1 l ±1 μA DAC Output Characteristics N_VDAC Resolution 10 Bits |
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