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LTC2943 Datasheet(PDF) 3 Page - Linear Technology |
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LTC2943 Datasheet(HTML) 3 Page - Linear Technology |
3 / 20 page LTC2943 3 2943fa For more information www.linear.com/LTC2943 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS TCE Total Charge Error (Note 5) 10mV ≤ |VSENSE| ≤ 50mV DC 10mV ≤ |VSENSE| ≤ 50mV DC 1mV ≤ |VSENSE| ≤ 10mV DC (Note 8) l l ±1 ±1.5 ±3.5 % % % VOSE Effective Differential Offset Voltage (Note 9) VSENSE ≥ 500µV, VSENSE+ = 10V l 5 10 µV Voltage Measurement ADC Resolution (No Missing Codes) (Note 8) l 14 Bits VFS(V) Full-Scale Voltage Conversion 23.6 V ΔVLSB Quantization Step of 14-Bit Voltage ADC (Note 6) 1.44 mV TUEV Voltage Total Unadjusted Error l 1 1.3 % % GainV Voltage Gain Accuracy l 1.3 % INLV Integral Nonlinearity VSENSE+ > 5V l ±1 ±4 LSB 3.6V ≤ VSENSE+ ≤ 5V l ±8 LSB TCONV(V) Voltage Conversion Time l 48 ms Current Measurement ADC Resolution (No Missing Codes) (Note 8) l 12 Bits VFS(I) Full-Scale Current Conversion l ±60 mV VSENSE Sense Voltage Differential Input Range VSENSE+ – VSENSE– l ±50 mV ΔILSB Quantization Step of 12-Bit Current ADC (Note 6) 29.3 µV GainI Current Gain Accuracy l 1 1.3 % % VOS(I) Offset ±1 ±10 LSB INLI Integral Nonlinearity l ±1 ±4 LSB TCONV(I) Current Conversion Time l 8 ms Temperature Measurement ADC Resolution (No Missing Codes) (Note 8) l 11 Bits TFS Full-Scale Temperature 510 K ΔTLSB Quantization Step of 11-Bit Temperature ADC (Note 6) 0.25 K TUET Temperature Total Unadjusted Error VSENSE+ ≥ 5V (Note 8) l ±3 ±5 K K TCONV(T) Temperature Conversion Time l 8 ms Digital Inputs and Digital Outputs VITH(HV) Logic Input Threshold VSENSE+ ≥ 5V l 0.8 2.2 V VITH(LV) 3.6V < VSENSE+ < 5V 0.5 1.8 V VOL Low Level Output Voltage, ALCC, SDA I = 3mA, VSENSE+ ≥ 5V l 0.4 V IIN Input Leakage, ALCC, SCL, SDA VIN = 5V l 1 µA CIN Input Capacitance, ALCC, SCL, SDA (Note 8) l 10 pF |
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