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AD7538 Datasheet(PDF) 2 Page - Analog Devices |
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AD7538 Datasheet(HTML) 2 Page - Analog Devices |
2 / 8 page REV. A –2– AD7538–SPECIFICATIONS1 J, K A, B Parameter Versions Versions S Version T Version Units 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 Coefficient 3; ∆Gain/∆Temperature ±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 k Ω min Typical Input Resistance = 6 k Ω 10 10 10 10 k Ω 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 VSS Range –200/–500 –200/–500 –200/–500 –200/–500 mV min/mV max This Range IDD 4 4 4 4 mA max All Digital Inputs VIL or VIH 500 500 500 500 µA max All Digital Inputs 0 V or VDD AC PERFORMANCE CHARACTERISTICS Parameter TA = +25 C TA = TMIN, TMAX Units Test Conditions/Comments Output Current Settling Time 1.5 µs max To 0.003% of Full-Scale Range. IOUT Load= 100 Ω, C EXT = 13 pF. DAC Register Alternately Loaded with All 1s and All 0s. Typical Value of Settling Time Is 0.8 µs. Digital to Analog Glitch Impulse 20 nV-sec typ Measured with VREF = 0 V. IOUT Load = 100 Ω, C EXT = 13 pF. DAC Register Alternately Loaded with All 1s and All 0s. Multiplying Feedthrough Error 3 5 mV p-p typ VREF = ±10 V, 10 kHz Sine Wave DAC Register Loaded with All 0s. Power Supply Rejection ∆Gain/∆V DD ±0.01 ±0.02 % per % max ∆V DD = ±5% Output Capacitance COUT (Pin 3) 260 260 pF max DAC Register Loaded with All 1s COUT (Pin 3) 130 130 pF max DAC Register Loaded with All 0s Output Noise Voltage Density (10 Hz–100 kHz) 15 nV √Hz typ Measured Between RFB and IOUT NOTES 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 2Specifications are guaranteed for a V DD of +11.4 V to +15.75 V. At VDD = 5 V, the device is fully functional with degraded specifications. 3Sample tested to ensure compliance. Specifications subject to change without notice. These characteristics are included for Design Guidance only and are not sub- ject to test. (VDD = +11.4 V to +15.75 V, VREF = +10 V, VPIN3 = VPIN4 = O V, VSS = O V or –300 mV, Output Amplifier is AD711 except where noted.) (VDD = +11.4 V to +15.75 V 2, V REF = +10 V; VPIN3 = VPIN4 = 0 V, VSS = –300 mV. All specifications TMIN to TMAX unless otherwise noted.) |
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