Datasheet AD420 (Analog Devices) - 3

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Data Sheet AD420 SPECIFICATIONS
TA = TMIN − TMAX, VCC = +24 V, unless otherwise noted.
Table 1. AD420-32 V ersion Parameter Min Typ Max Units Comments
RESOLUTION 16 Bits IOUT CHARACTERISTICS RL = 500 Ω Operating Current Ranges 4 20 mA 0 20 mA 0 24 mA Current Loop Voltage Compliance 0 VCC − 2.75 V V Settling Time (to 0.1% of FS)1 2.5 3 ms Output Impedance (Current Mode) 25 MΩ Accuracy2 Monotonicity 16 Bits Integral Nonlinearity ±0.002 ±0.012 % Offset (0 mA or 4 mA) (TA = +25°C) ±0.05 % Offset Drift 20 50 ppm/° C Total Output Error (20 mA or 24 mA) (TA = +25°C) ±0.15 % Total Output Error Drift 20 50 ppm/° C PSRR3 5 10 µA/V VOUT CHARACTERISTICS FS Output Voltage Range (Pin 17) 0 5 V VOLTAGE REFERENCE REF OUT Output Voltage (TA = +25° C) 4.995 5.0 5.005 V Drift ±25 ppm/° C Externally Available Current 5 mA Short Circuit Current 7 mA REF IN Resistance 30 kΩ VLL Output Voltage 4.5 V Externally Available Current 5 mA Short Circuit Current 20 mA DIGITAL INPUTS VIH (Logic 1) 2.4 V VIL (Logic 0) 0.8 V IIH (VIN = 5.0 V) ±10 µA IIL (VIN = 0 V) ±10 µA Data Input Rate (3-Wire Mode) No Minimum 3.3 MBPS Data Input Rate (Asynchronous Mode) No Minimum 150 kBPS DIGITAL OUTPUTS FAULT DEFECT VOH (10 kΩ Pull-Up Resistor to VLL) 3.6 4.5 V VOL (10 kΩ Pull-Up Resistor to VLL) 0.2 0.4 V VOL @ 2.5 mA 0.6 V DATA OUT VOH (IOH = −0.8 mA) 3.6 4.3 V VOL (IOL = 1.6 mA) 0.3 0.4 V Rev. I | Page 3 of 16 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TIMING REQUIREMENTS THREE-WIRE INTERFACE THREE-WIRE INTERFACE FAST EDGES ON DIGITAL INPUT ASYNCHRONOUS INTERFACE TERMINOLOGY THEORY OF OPERATION APPLICATIONS INFORMATION CURRENT OUTPUT DRIVING INDUCTIVE LOADS VOLTAGE-MODE OUTPUT OPTIONAL SPAN AND ZERO TRIM THREE-WIRE INTERFACE USING MULTIPLE DACS WITH FAULT DETECT ASYNCHRONOUS INTERFACE USING OPTOCOUPLERS MICROPROCESSOR INTERFACE AD420-TO-MC68HC11 (SPI BUS) INTERFACE AD420 TO MICROWIRE INTERFACE EXTERNAL BOOST FUNCTION AD420 PROTECTION TRANSIENT VOLTAGE PROTECTION BOARD LAYOUT AND GROUNDING POWER SUPPLIES AND DECOUPLING OUTLINE DIMENSIONS ORDERING GUIDE