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LTC2949 Datasheet(PDF) 4 Page - Analog Devices |
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LTC2949 Datasheet(HTML) 4 Page - Analog Devices |
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4 / 80 page  LTC2949 4 Rev A For more information www.analog.com ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply VAVCC Analog Supply Voltage l 4.5 14 V VDVCC Digital Supply Voltage l 4.5 14 V VUVLO Supply Undervoltage Lockout Threshold VAVCC, VDVCC Falling l 4.5 V ICC Average Supply Current into AVCC and DVCC Core State: STANDBY or MEASURE l 16 20 mA Core State: SLEEP 9 15 µA Core State: SLEEP l 150 µA Additional DVCC Supply Current if isoSPI in READY/ACTIVE States Note: ACTIVE State Current Assumes tCLK = 1μs, (Note 5) RB1 + RB2 = 2k READY l 4.8 5.8 mA ACTIVE l 6.1 7.8 mA RB1 + RB2 = 20k READY l 2.1 3 mA ACTIVE l 2.5 3.5 mA VBYP1 BYP1 Regulated Output Voltage l 2.25 2.5 2.75 V BYP1 Load Current l –10 0 mA BYP1 Load Regulation Error ILOAD = –10mA l –15 0 mV BYP1 Undervoltage Lockout Threshold l 2.25 V VBYP2 BYP2 Regulation Output Voltage l 3 3.25 3.6 V BYP2 Load Current l –10 0 mA BYP2 Load Regulation Error ILOAD = –10mA l –60 mV Thermal Shutdown Temperature 170 °C Current Sense ADC Resolution (No Missing Codes) Slow Mode Filtered (Note 7) l 20 Bit Slow Mode (Note 7) l 18 Bit Fast Mode (Note 7) l 15 Bit Full-Scale Differential Input Voltage VI1P-VI1M, VI2P-VI2M ±124 mV VDIFI Differential Input Voltage Range VI1P-VI1M, VI2P-VI2M l ±110 mV Pin Voltage of I1P, I1M, I2P, I2M l –0.11 VAVCC+0.11 V Current Sense Quantization Step Slow Mode Filtered 237.5 nV Slow Mode 950 nV Fast Mode 7.60371 µV CFPx Input Leakage Current at CF1P, CF1M, I1P, I1M, CF2P, CF2M, I2P, I2M Core State = SLEEP/STANDBY l 60 nA Differential Input Current from CF1P to CF1M, CF2P to CF2M Core State: MEASURE; Pin Voltages: 0V ≤ VCF1P, VCF1M, VI1P, VI1M, VCF2P, VCF2M, VI2P, VI2M ≤ VAVCC VDIFI/100kΩ µA Noise Slow Mode Filtered 160 nVRMS Slow Mode 320 nVRMS Fast Mode 3 µVRMS Gain Error |VDIFI| ≤ 110mV 0.15 % l 0.3 % Offset Voltage IADCx, IxP, IxM = 0V VAVCC = VDVCC = 5V Slow Mode l 0 ±1 µV Fast Mode l 0 ±2 µV Total Unadjusted Error |VDIFI| ≥ 25mV l 0.3 % The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. |
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