Datasheet LTC2461, LTC2463 (Analog Devices) - 3

LTC2461/LTC2463
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes) (Note 3) l 16 Bits Integral Nonlinearity (Note 4) l 1 8 LSB Offset Error LTC2461, 30Hz, LTC2463 l 2 15 LSB LTC2461, 60Hz 5 LSB Offset Error Drift 0.02 LSB/°C Gain Error Includes Contributions of ADC and Internal Reference l ±0.01 ±0.25 % of FS Gain Error Drift Includes Contributions of ADC and Internal Reference C-Grade l ±2 ±10 ppm/°C I-Grade ±5 ppm/°C Transition Noise 2.2 µVRMS Power Supply Rejection DC 80 dB
ANALOG INPUTS 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
V + IN Positive Input Voltage Range LTC2463 l 0 VREF V V – IN Negative Input Voltage Range LTC2463 l 0 VREF V VIN Input Voltage Range LTC2461 l 0 VREF V V + + – OR , VUR Overrange/Underrange Voltage, IN+ VIN = 0.625V (See Figure 3) 8 LSB V – – + OR , VUR Overrange/Underrange Voltage, IN– VIN = 0.625V (See Figure 3) 8 LSB CIN IN+, IN–, IN Sampling Capacitance 0.35 pF IDC_LEAK(IN+, IN–, IN) IN+, IN– DC Leakage Current (LTC2463) VIN = GND or VCC (Note 8) l –10 1 10 nA IN DC Leakage Current (LTC2461) VIN = GND or VCC (Note 8) l –10 1 10 nA ICONV Input Sampling Current (Note 5) 50 nA VREF REFOUT Output Voltage l 1.247 1.25 1.253 V REFOUT Voltage Temperature Coefficient (Note 9) C-Grade l ±2 ±10 ppm/°C I-Grade ±5 ppm/°C Reference Line Regulation 2.7V ≤ VCC ≤ 5.5V –90 dB Reference Short Circuit Current VCC = 5.5, Forcing REFOUT to GND l 35 mA COMP Pin Short Circuit Current VCC = 5.5, Forcing REFOUT to GND l 200 µA Reference Load Regulation 2.7V ≤ VCC ≤ 5.5V, IOUT = 100μA Sourcing 3.5 mV/mA Reference Output Noise Density CCOMP= 0.1μF, CREFOUT = 0.1μF, At f = 1kHz 30 nV/√Hz
POWER REQUIREMENTS 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
VCC Supply Voltage l 2.7 5.5 V ICC Supply Current Conversion l 1.5 2.5 mA Nap l 800 1500 µA Sleep l 0.2 2 µA 24613fa 3 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Applications Information Package Description Electrical Characteristics Analog Inputs Power Requirements I2c Inputs and Outputs I2c Timing Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Package Description Revision History Typical Application Related Parts