AD421

PRODUCTION

Loop-Powered 4-20 mA DAC

Data Sheet (Rev. C) Product Selection Table

Part Models: 4
1ku List Price: Starting From $9.24

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Part Details

4mA to 20 mA Current Output
HART@ Compatible
16-Bit Resolution and Monotonicity
±0.01% Integral Nonlinearity
5 V or 3 V Regulator Output
2.5 V and 1.25 V Precision Reference
750 µA Quiescent Current max
Programmable Alarm Current Capability
Flexible High Speed Serial Interface
16-Lead SOIC and PDIP Packages

Part Models: 4
1ku List Price: Starting From $9.24

Documentation

Data Sheet 1

AD421: Loop-Powered 4-20 mA DAC Data Sheet (Rev.C) 12/22/2010

Application Note 2

AN-534: Adding HART® Capability to the AD421, Loop-Powered 4 mA–20 mA DAC Using the 20C15 HART Modem (Rev.B) 02/14/2015

AN-534: Adding HART® Capability to the AD421, Loop-Powered 4 mA to 20 mA DAC Using the AD5700 HART Modem 10/30/2020

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
AD421BNZ	16-Lead PDIP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD421BRZ	16-Lead SOIC Wide	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD421BRZRL	16-Lead SOIC Wide	Material Declaration Reliablity Data	Ultra Librarian SamacSys
AD421BRZRL7	16-Lead SOIC Wide	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 29, 2021 - 21_0033 Assembly Site Transfer for 14/16L 300_MIL PDIP to Cirtek
		PCN21_0033_Form Material_Report Detailed Change Description Qualification Results Summary
AD421BNZ
Aug 19, 2009 - 07_0024 Package Material Changes for SOT23, MiniSO, MQFP, PDIP, PLCC, SOIC (narrow and wide body), SSOP, TSSOP and TSSOP exposed pad
		Material_Report Material_Report Parts List PCN07_0024_Form Qual Data
AD421BNZ
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem
		PCN10_0117_Form Material_Report Reliability Report
AD421BRZ	PRODUCTION
AD421BRZRL
AD421BRZRL7

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
AD5421	PRODUCTION	16-Bit, Serial Input, Loop-Powered, 4mA to 20mA DAC

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