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AD7877ACPZ-500RL7 Datasheet(PDF) 4 Page - Analog Devices |
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AD7877ACPZ-500RL7 Datasheet(HTML) 4 Page - Analog Devices |
4 / 46 page Data Sheet AD7877 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 Min Typ Max Unit Test Conditions/Comments DC ACCURACY Resolution 12 Bits No Missing Codes 11 12 Bits Integral Nonlinearity (INL)1 ±2 LSB LSB size = 610 µV Differential Nonlinearity (DNL)1 Minimum LSB size = 610 µV Negative DNL −0.99 LSB Positive DNL +2 LSB Offset Error1 ±5 LSB Specified for 11bits Gain Error1 ±3 LSB Specified for 11 bits; external reference Noise 70 µV rms Power Supply Rejection 70 dB Internal Clock Frequency 2 MHz SWITCH DRIVERS On Resistance1 Y+, X+ 14 Ω Y−, X− 14 Ω ANALOG INPUTS Input Voltage Ranges 0 VREF V DC Leakage Current ±0.1 µA Input Capacitance 30 pF Accuracy 0.3 % All channels, internal VREF REFERENCE INPUT/OUTPUT Internal Reference Voltage 2.44 2.55 V Internal Reference Tempco ±50 ppm/°C VREF Input Voltage Range 1 VCC V DC Leakage Current ±1 µA VREF Input Impedance 1 GΩ CS = GND or VCC; typically 25 Ω when the on-board reference is enabled TEMPERATURE MEASUREMENT Temperature Range −40 +85 °C Resolution Differential Method2 1.6 °C Single Conversion Method3 0.3 °C Accuracy Differential Method2 ±4 °C 0°C to 70°C Single Conversion Method3 ±2 °C Calibrated at 25°C BATTERY MONITOR Input Voltage Range 0.5 5 V @ VREF = 2.5 V Input Impedance 14 kΩ Sampling, 1 GΩ when the battery monitor is off Accuracy 1 3.2 % External/internal reference, see Figure 26 Rev. E | Page 3 of 45 |
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