ADR421 overview

ADR421 is a component documented by Analog Devices. The PDF description identifies it as "Ultraprecision Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET Voltage References 03/02-Data Sheet changed from REV. A to REV. B." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.

Datasheet snapshot

  • Manufacturer: Analog Devices
  • Part number: ADR421
  • Category: Power Management
  • Datasheet length: 16 Pages

Specifications and operating details

The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.

  • PDF pages: 24 Ultraprecision, Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET® Voltage References Data Sheet ADR420/ADR421/ADR423/ADR425 Rev.
  • J | SPECIFICATIONS ADR420 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted.
  • Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.045 2.048 2.051 V B Grade 2.047 2.048 2.049 V INITIAL ACCURACY1 VOUTERR A Grade −3 +3 mV −0.15 +0.15 % B Grade −1 +1 mV −0.05 +0.05 % TEMPERATURE COEFFICIENT TCVOUT.
  • J | ADR421 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted.
  • Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.497 2.500 2.503 V B Grade 2.499 2.500 2.501 V INITIAL ACCURACY1 VOUTERR A Grade −3 +3 mV −0.12 +0.12 % B Grade −1 +1 mV −0.04 +0.04 % TEMPERATURE COEFFICIENT TCVOUT.
  • J | ADR423 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted.
  • Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.996 3.000 3.004 V B Grade 2.9985 3.000 3.0015 V INITIAL ACCURACY1 VOUTERR A Grade −4 +4 mV −0.13 +0.13 % B Grade −1.5 +1.5 mV −0.04 +0.04 % TEMPERATURE COEFFICIENT.

Topics covered by the datasheet

The document includes sections related to:

  • ADR420/ADR421/ADR423/ADR425 (Rev. J)
  • FEATURES
  • APPLICATIONS
  • REVISION HISTORY
  • Description

Engineering review checklist

  • Confirm repetitive reverse voltage, average forward current, surge current and leakage at the intended temperature.
  • Check forward-voltage loss and reverse-recovery behavior at the actual current and switching frequency.
  • Review package thermal resistance, copper area, polarity marking and transient derating before layout release.

Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.

View the complete PDF and model record

Open the ADR421 datasheet and model details to review the complete PDF, document pages and available product information.

Source attribution

Adapted from the PDF associated with this DigiCamel model page.

Source model URL: https://www.digicamel.com/product.php?slug=adr421-analog-devices

ADR421 Analog Devices Power Management ADR421 datasheet ADR421 specifications ADR421 applications