AD420ARZ-32 Analog Devices Inc, AD420ARZ-32 Datasheet
AD420ARZ-32
Specifications of AD420ARZ-32
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AD420ARZ-32 Summary of contents
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FEATURES 4 mA–20 mA, 0 mA– mA–24 mA current output 16-bit resolution and monotonicity ±0.012% max integral nonlinearity ±0.05% max offset (trimmable) ±0.15% max total output error (trimmable) Flexible serial digital interface (3.3 MBPS) On-Chip loop fault ...
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AD420 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Timing ...
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SPECIFICATIONS − +24 V, unless otherwise noted. A MIN MAX CC Table 1. Parameter RESOLUTION I CHARACTERISTICS OUT Operating Current Ranges Current Loop Voltage Compliance 1 Settling Time (to 0.1% of FS) Output ...
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AD420 Parameter POWER SUPPLY Operating Range V CC Quiescent Current Quiescent Current (External TEMPERATURE RANGE Specified Performance 1 External capacitor selection must be as described in Figure 6. 2 Total Output Error includes Offset and Gain Error. ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter V to GND GND OUT Digital Inputs to GND Digital Output to GND V and REF OUT: Outputs Safe for LL Indefinite Short to Ground Storage Temperature Lead Temperature (Soldering, 10 ...
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AD420 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Function 1, 12 Connection. No internal connections inside device. 13 Auxiliary buffered +4.5 V digital logic voltage. This pin is the ...
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TIMING REQUIREMENTS T = −40°C to +85° THREE-WIRE INTERFACE CLOCK WORD “N” DATA IN LATCH WORD “N ...
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AD420 TERMINOLOGY Resolution For 16-bit resolution, 1 LSB = 0.0015% of the FSR. In the 4 mA–20 mA range 1 LSB = 244 nA. Integral Nonlinearity Analog Devices defines integral nonlinearity as the maximum deviation of the actual, adjusted DAC ...
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THEORY OF OPERATION The AD420 uses a sigma-delta (Σ-Δ) architecture to carry out the digital-to-analog conversion. This architecture is particularly well suited for the relatively low bandwidth requirements of the industrial control environment because of its inherent monotonicity at high ...
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AD420 APPLICATIONS INFORMATION CURRENT OUTPUT The AD420 can provide 4 mA–20 mA, 0 mA–20 mA mA– output without any active external components. Filter capacitors C1 and C2 can be any type of low cost ceramic capacitors. ...
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THREE-WIRE INTERFACE Figure 9 shows the AD420 connected in the 3-wire interface mode. The AD420 data input block contains a serial input shift register and a parallel latch. The contents of the shift register are controlled by the DATA IN ...
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AD420 MICROPROCESSOR INTERFACE AD420-TO-MC68HC11 (SPI BUS) INTERFACE The AD420 interface to the Motorola serial peripheral interface (SPI) is shown in Figure 11. The MOSI, SCK, and SS pins of the HC11 are respectively connected to the DATA IN, CLOCK, and ...
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EXTERNAL BOOST FUNCTION The external boost transistor reduces the power dissipated in the AD420 by reducing the current flowing in the on-chip output transistor (dividing it by the current gain of the external circuit). A discrete NPN transistor with a ...
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AD420 AD420 PROTECTION TRANSIENT VOLTAGE PROTECTION The AD420 contains ESD protection diodes, which prevent damage from normal handling. The industrial control envir- onment can, however, subject I/O circuits to much higher transients. To protect the AD420 from excessively high voltage ...
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... C AD420ANZ-32 −40°C to +85° C AD420AR-32 −40°C to +85° C AD420AR-32-REEL −40°C to +85° C AD420ARZ-32 −40°C to +85° C AD420ARZ-32-REEL −40°C to +85° RoHS Compliant Part. 1.280 (32.51) 1.250 (31.75) 1.230 (31.24) 13 0.280 (7.11) 0.250 (6.35) ...
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AD420 NOTES ©1999–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00494-0-1/11(H) Rev Page ...