Analog Devices

ADR421ARZ-REEL7

Voltage Reference

Manufacturer
MPN
ADR421ARZ-REEL7
Product Type
Package / Case
SOIC-8
Key Attributes
High-precision, low-noise XFET voltage reference

Technical Specifications

TypeDescription
Output TypeFixed
Output Voltage2.5 V
Output Current0.01 A
Working Voltage V11.25 V
Tolerance0.04 %
Iq A0.001 A
Minimum Cathode Current for Regulation-
TypeDescription
Reference TypeSeries
Noise - 1/10Hz to 10Hz1.75uVp-p
Noise - 10Hz to 10kHz-
Operating Temp-40°C ~ +125°C
FeaturesTemperature compensation control
Package / CaseSOIC-8

Product Introduction

The ADR42x series are high-precision, second-generation extra implanted FET (XFET) voltage references featuring low noise, high accuracy, and excellent long-term stability, available in SOIC and MSOP packages.

By combining patented curvature correction technology with XFET technology, nonlinearity of voltage variation with temperature is minimized. The XFET architecture delivers superior accuracy and thermal hysteresis performance compared to bandgap references, while also offering lower power consumption and reduced supply headroom versus buried zener references.

The ADR42x's outstanding noise performance, stability, and accuracy make it ideal for precision conversion applications such as fiber optic networks and medical equipment. An optional trim pin allows output voltage adjustment within ±0.5% without affecting other performance parameters. The ADR42x series voltage references are offered in two electrical grades, rated for an extended industrial temperature range of -40°C to +125°C, available in 8-lead SOIC or 8-lead MSOP packages (the latter being 30% smaller than the former).

Features

  • Low noise (0.1 Hz to 70 Hz)
  • ADR420: 1.75 μVₚ₋ₚ
  • ADR421: 1.75 μVₚ₋ₚ
  • ADR423: 2.0 μVₚ₋ₚ
  • ADR425: 3.4 μVₚ₋ₚ
  • Low temperature coefficient: 3 ppm/°C
  • Long-term stability: 50 ppm/1000 hours
  • Load regulation: 70 ppm/mA
  • Line regulation: 35 ppm/V
  • Low hysteresis: 40 ppm (typical)
  • Wide operating voltage range
  • ADR420: 4 V to 18 V
  • ADR421: 4.5 V to 18 V
  • ADR423: 5 V to 18 V
  • ADR425: 7 V to 18 V
  • Quiescent current: 0.5 mA (maximum)
  • High output current: 10 mA
  • Wide temperature range: -40°C to +125°C

Applications

  • - Precision data acquisition systems - High-resolution converters - Battery-powered instrumentation - Portable medical instruments - Industrial process control systems - Precision instruments - Fiber optic network control circuits

Datasheet

📄 Open Download

Alternative Parts

Common ADR421ARZ-REEL7 alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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