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LTC2970CUFD Datasheet(PDF) 3 Page - Linear Technology |
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LTC2970CUFD Datasheet(HTML) 3 Page - Linear Technology |
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3 / 36 page  LTC2970/LTC2970-1 3 29701fc SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power-Supply Characteristics IV12 12VIN Supply Current V12VIN = 12V, VDD Floating ● 4.24 7.5 mA IDD VDD Supply Current VDD = 5V, V12VIN = VDD ● 3.7 5 mA VLKO VDD Undervoltage Lockout VDD Ramping-Down, V12VIN = VDD ● 3.7 4.14 4.4 V VDD Undervoltage Lockout Hysteresis 118 mV VDD Supply Input Operating Range ● 4.5 5.75 V Regulator Output Voltage 8V ≤ V12VIN ≤ 15V, –1mA ≤ IVDD ≤ 0 ● 4.75 4.95 5.25 V Regulator Output Voltage Temperature Coefficient 10 ppm/°C Regulator Output Voltage Load Regulation –1mA ≤ IVDD ≤ 0 160 ppm/mA Regulator Line Regulation 8V ≤ V12VIN ≤ 15V, IVDD = 0mA 80 ppm/V Regulator Output Short-Circuit Current V12VIN = 12V, VDD = 0V ● –5 –34 –63 mA V12VIN 12VIN Supply Operating Range ● 815 V Voltage Reference Characteristics VREF Reference Output Voltage 1.229 V Reference Voltage Temperature Coefficient 2 ppm/°C Reference Overdrive Voltage Input Range ● 11.5 V ADC Characteristics N_ADC Resolution N_ADC = 8.192V/16384 500 μV/LSB TUE_ADC Total Unadjusted Error VIN = 3V, VIN = VINn_xP – VINn_xM (Note 3) ● ±0.5 % INL_ADC Integral Nonlinearity (Note 4) ● –4.5 2 4.5 LSB DNL_ADC Differential Nonlinearity (Note 7) ● ±0.5 LSB VIN_ADC Input Voltage Range ● 06 V VOS_ADC Offset Error ● –1000 –316 1000 μV Offset Error Drift 0.19 μV/°C GAIN_ADC Gain Error Full-Scale VIN = 6V ● ±0.4 % Gain Error Drift 3 ppm/°C TCONV_ADC Conversion Time 33.3 ms CIN_ADC Input Sampling Capacitance 3pF FIN_ADC Input Sampling Frequency 61.4 kHz ILEAK_ADC Input Leakage Current 0V < VIN < 6V ● ±0.1 μA IDAC Output Current Characteristics N_IOUT Resolution (Guaranteed Monotonic) 8 Bits INL_IOUT Integral Nonlinearity VIOUTn < VDD – 1.5V ● ±1 LSB DNL_IOUT Differential Nonlinearity VIOUTn < VDD – 1.5V ● ±1 LSB IFS-IOUT Full-Scale Output Current VIOUTn < VDD – 1.5V, DAC Code = 'hff ● –236 –255 –276 μA IDRIFT-IOUT Output Current Drift DAC Code = 'hff 32 ppm/°C IOS-IOUT Offset Current DAC Code = 'h00 ● ±0.1 μA ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. V12VIN = 12V, VDD and REF pins floating unless otherwise indicated, CVDD = 100nF and CREF = 100nF. |
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