전자부품 데이터시트 검색엔진 |
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AD7873 데이터시트(PDF) 4 Page - Analog Devices |
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AD7873 데이터시트(HTML) 4 Page - Analog Devices |
4 / 29 page Data Sheet AD7873 Rev. F | Page 3 of 28 SPECIFICATIONS VCC = 2.7 V to 3.6 V, VREF = 2.5 V internal or external, fDCLK = 2 MHz; TA = −40°C to +85°C, unless otherwise noted. Table 1. Parameter AD7873A1 AD7873B1 Unit Test Conditions/Comments DC ACCURACY Resolution 12 12 Bits No Missing Codes 11 12 Bits min Integral Nonlinearity2 ±2 ± 1 LSB max Differential Nonlinearity2 –0.9/+1.5 LSB max Offset Error2 ±6 ±6 LSB max +VCC = 2.7 V Gain Error2 ±4 ±4 LSB max External reference Noise 70 70 µV rms typ Power Supply Rejection 70 70 dB typ SWITCH DRIVERS On Resistance2 Y+, X+ 5 5 Ω typ Y–, X– 6 6 Ω typ ANALOG INPUT Input Voltage Ranges 0 to VREF 0 to VREF V DC Leakage Current ±0.1 ±0.1 µA typ Input Capacitance 37 37 pF typ REFERENCE INPUT/OUTPUT Internal Reference Voltage 2.45/2.55 2.45/2.55 V min/max Internal Reference Tempco ±15 ±15 ppm/°C typ VREF Input Voltage Range 1/VCC 1/VCC V min/max DC Leakage Current ±1 ± 1 µA max VREF Input Impedance 1 1 GΩ typ CS = GND or +VCC; typically 260 Ω when the on-board reference is enabled TEMPERATURE MEASUREMENT Temperature Range –40/+85 –40/+85 °C min/max Resolution Differential Method3 1.6 1.6 °C typ Single Conversion Method4 0.3 0.3 °C typ Accuracy Differential Method3 ±2 ±2 °C typ Single Conversion Method4 ±2 ±2 °C typ BATTERY MONITOR Input Voltage Range 0/6 0/6 V min/max Input Impedance 10 10 kΩ typ Sampling; 1 GΩ when battery monitor is off Accuracy ±2.5 ±2 % max External reference ±3 ±3 % max Internal reference LOGIC INPUTS Input High Voltage, VINH 2.4 2.4 V min Input Low Voltage, VINL 0.4 0.4 V max Input Current, IIN ±1 ±1 µA max Typically 10 nA, VIN = 0 V or +VCC Input Capacitance, CIN5 10 10 pF max |
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