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AD7538 Datasheet(PDF) 3 Page - Analog Devices |
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AD7538 Datasheet(HTML) 3 Page - Analog Devices |
3 / 16 page AD7538 Rev. B | Page 3 of 16 SPECIFICATIONS VDD = 11.4 V to 15.75 V1, VREF = 10 V; VPIN3 = VPIN4 = 0 V, VSS = −300 mV; all specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter2 A, J Versions B, K Versions S Version T Version Unit Test Conditions/Comments ACCURACY Resolution 14 14 14 14 Bits Relative Accuracy ±2 ±1 ±2 ±1 LSB max All grades guaranteed monotonic Differential Nonlinearity ±1 ±1 ±1 ±1 LSB max Over temperature Full-Scale Error Measured using internal RFB DAC +25°C ±4 ±4 ±4 ±4 LSB max Registers loaded with all 1s TMIN to TMAX ±8 ±5 ±10 ±6 LSB max Gain Temperature Coefficient3; ΔGain/ΔTemperature ±2 ±2 ±2 ±2 ppm/°C typ Output Leakage Current IOUT (Pin 3) 25°C ±5 ±5 ±5 ±5 nA max All digital inputs 0 V TMIN to TMAX ±10 ±10 ±20 ±20 nA max VSS = –300 mV TMIN to TMAX ±25 ±25 ±150 ±150 nA max VSS = 0 V REFERENCE INPUT Input Resistance (Pin 1) 3.5 3.5 3.5 3.5 kΩ min Typical input resistance = 6 kΩ 10 10 10 10 kΩ max DIGITAL INPUTS VIH (Input High Voltage) 2.4 2.4 2.4 2.4 V min VIL (Input Low Voltage) 0.8 0.8 0.8 0.8 V max IIN (Input Current) 25°C ±1 ±1 ±1 ±1 μA max VIN = 0 V or VDD TMIN to TMAX ±10 ±10 ±10 ±10 μA max CIN (Input Capacitance)3 7 7 7 7 pF max POWER SUPPLY VDD Range 11.4/15.75 11.4/15.75 11.4/15.75 11.4/15.75 V min/V max Specification guaranteed over this range VSS Range −200/−500 −200/−500 −200/−500 −200/−500 mV min/ mV max Specification guaranteed over this range IDD 4 4 4 4 mA max All digital inputs are VIL or VIH 500 500 500 500 μA max All digital inputs are 0 V or VDD 1 Specifications are guaranteed for a VDD of 11.4 V to 15.75 V. At VDD = 5 V, the device is fully functional with degraded specifications. 2 Temperature range as follows: J, K Versions: 0°C to +70°C A, B Versions: −25°C to +85°C S, T Versions: −55°C to +125°C 3 Sample tested to ensure compliance. |
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