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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LTC2972 датащи(PDF) 6 Page - Linear Technology |
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LTC2972 датащи(HTML) 6 Page - Linear Technology |
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6 / 112 page  LTC2972 6 2972fa For more information www.linear.com/LTC2972 The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. VPWR = VIN_SNS = 12V, VDD33 = VDDIO, VDD33, VDD25, REFP and REFM pins floating, unless otherwise indicated. CVDD33 = 100nF, CVDD25 = 100nF, CVIN_SNS_CAP = 10nF and CREF = 100nF. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS TUE_ADC_ CURR_SNS Total Unadjusted Error (Note 3) Current Sense Inputs 20mV ≤ |VIN_ADC| ≤ 170mV Mfr_config_imon_sel = 0 l ±0.3 % of Reading Current Sense Inputs |VIN_ADC| ≤ 20mV Mfr_config_imon_sel = 0 l ±60 µV Current Sense Inputs VIN_ADC ≥ 1V Mfr_config_imon_sel = 1 l ±0.25 % of Reading Current Sense Inputs 0 ≤ VIN_ADC ≤ 1V Mfr_config_imon_sel = 1 l ±2.5 mV VOS_ADC Offset Error ISENSEPn and ISENSEMn Inputs, VOS • IOUT_CAL_ GAIN, IOUT_CAL_GAIN = 1000mΩ Mfr_config_imon_sel = 0 l ±35 µV tCONV_ADC Conversion Time VSENSEPn, VSENSEMn, VIN_SNS Inputs (Note 6) 6.15 ms ISENSEPn and ISENSEMn Inputs (Note 6) Mfr_config_imon_sel = 0 24.6 ms ISENSEPn and ISENSEMn Inputs (Note 6) Mfr_config_imon_sel = 1 6.15 ms Internal Temperature (READ_TEMPERATURE_2) (Note 6) 24.6 ms tUPDATE_ADC Update Time Mfr_ein_config_hd = 0 (Note 6) 135 ms Mfr_ein_config_hd = 1 (Note 6) 305 ms fIN_ADC Input Sampling Frequency 62.5 kHz Sense Input Current Characteristics (Note 7) IIN_VSENSE Input Current VSENSEPn and VSENSEMn Inputs l ±15 µA Differential Input Current VSENSEPn and VSENSEMn Inputs, VIN_DIFF = 6V l ±30 µA IIN_ISENSE Input Current ISENSEPn and ISENSEMn Inputs Mfr_config_imon_sel = 0 l ±1 µA ISENSEPn and ISENSEMn Inputs Mfr_config_imon_sel = 1 l ±4 µA Differential Input Current ISENSEPn and ISENSEMn Inputs, |VIN_DIFF| = 170mV Mfr_config_imon_sel = 0 l ±1 µA ISENSEPn and ISENSEMn Inputs, |VIN_DIFF| = 6.0V Mfr_config_imon_sel = 1 l ±8 µA DAC Output Characteristics N_VDAC Resolution 10 Bits VFS_VDAC Full-Scale Output Voltage (Programmable) DAC Code = 0x3FF DAC Polarity = 1 Buffer Gain Setting_0 Buffer Gain Setting_1 l l 1.3 2.5 1.38 2.65 1.44 2.77 V V INL_VDAC Integral Nonlinearity (Note 8) l ±2 LSB DNL_VDAC Differential Nonlinearity (Note 8) l ±2.4 LSB VOS_VDAC Offset Voltage (Note 8) l ±10 mV VDAC Load Regulation VDACn = 2.65V, IVDACn Sourcing = 2mA 100 ppm/mA VDACn = 0.1V, IVDACn Sinking = 2mA 100 ppm/mA PSRR DC: 3.13V ≤ VDD33 ≤ 3.47V, VPWR = VDD33 60 dB Leakage Current VDACn Hi-Z, 0V ≤ VDACn ≤ 6V l ±100 nA Short-Circuit Current Low VDACn Shorted to GND l –12 –4 mA Short-Circuit Current High VDACn Shorted to VDD33 l 4 12 mA ELECTRICAL CHARACTERISTICS |
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