MAX5491
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MAX5491

Precision-Matched Resistor-Divider in SOT23

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Ultra-Precision Voltage-Dividers in a SOT23 Keep Drift to 3ppm/°C

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Part Models 27
1ku List Price Starting From $4.26
Features
  • Resistance Ratios from 1:1 to 30:1
  • Custom Ratios Available Upon Request
  • ±2kV Human Body Model ESD Protection
  • Tight Initial Ratio Accuracy
    • 0.035% (MAX5491A)
    • 0.05% (MAX5491B)
    • 0.1% (MAX5491C)
  • Low 2ppm/°C Resistor-Ratio-Drift
  • Up to 50V Operating Voltage Across Sum of R1 and R2
  • Tiny 3-Pin SOT23 Package
Additional Details
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The MAX5491 precision resistor-divider consists of two accurately matched resistors with access to the ends and center of the divider. This device offers excellent resistance matching of 0.035% (A grade), 0.05% (B grade), and 0.1% (C grade). The MAX5491 includes an extremely low resistance-ratio temperature drift of 2ppm/°C over -40°C to +85°C, and has an end-to-end resistance of 30kΩ. Resistance ratios from 1:1 to 30:1 are available. Ten standard ratios are available (see Table 1), and custom ratios are also available upon request. To enhance device and system robustness, the MAX5491 also features ±2kV Human Body Model electrostatic discharge (ESD) protection to ensure against real-world ESD events. The MAX5491 is ideal for precision gain-setting applications where tight resistance matching and low temperature drift are necessary.

The MAX5491 is available in a space-saving 3-pin SOT23 package, and is guaranteed over the extended -40°C to +85°C temperature range.

Applications

  • Automated Test Equipment (ATE)
  • Industrial Process Controls
  • Instrumentation
  • Medical Equipment
  • Precision Gain Setting
  • Wireless Base Stations
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Part Models 27
1ku List Price Starting From $4.26
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MAX5491

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Data Sheet

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UPDATED 12/17/2004
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MAX5491: Precision-Matched Resistor-Divider in SOT23 Data Sheet (Rev.3)

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UPDATED 01/01/1900
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MAX5491: 精密匹配的电阻分压器，SOT23封装 Data Sheet

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UPDATED 01/01/1900
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MAX5491: 精度マッチング済み、抵抗分圧器、SOT23 Data Sheet

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Reliability Data

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UPDATED 01/12/2023
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UPDATED 02/28/2023
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3V DACs Used in ±10V Applications redirect icon

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UPDATED 02/28/2023
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3V DAC在±10V中的应用 redirect icon

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UPDATED 02/28/2023
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±10Vアプリケーションで使用される3V DAC redirect icon

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UPDATED 03/08/2011
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Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface redirect icon

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UPDATED 04/01/2013
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The Zero-Transistor IC, a New Plateau in IC Design redirect icon

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UPDATED 07/01/2009
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Saving Energy: Little Things Mean a Lot redirect icon

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UPDATED 09/07/2009
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节能：一叶知秋 redirect icon

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UPDATED 07/02/2009
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省エネルギー：塵も積もれば山となる redirect icon

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UPDATED 09/28/2009
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Minimize Voltage Offsets in Precision Amplifiers redirect icon

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UPDATED 10/29/2009
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降低精密放大器的电压失调 redirect icon

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UPDATED 11/11/2009
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UPDATED 12/19/2008
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Rail Splitter, from Abraham Lincoln to Virtual Ground redirect icon

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UPDATED 11/26/2012
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A Power Engineer: the Super Hero in a Design? redirect icon

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UPDATED 01/07/2013
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電源エンジニア：設計におけるスーパーヒーロー？ redirect icon

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UPDATED 03/10/2015
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Challenge the Conventional - Make Unipolar DACs Bipolar redirect icon

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UPDATED 07/09/2024
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How to Achieve 7.5-Digit Accuracy in Instrumentation Applications: Part 1 redirect icon

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UPDATED 07/09/2024
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如何在仪器仪表应用中实现七位半准确度：第一部分 redirect icon

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UPDATED 07/09/2024
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計測器アプリケーションにおいて7.5桁の精度を実現する方法：パート1 redirect icon

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UPDATED 03/04/2012
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Documentation

Technical Documents 12
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Data Sheet 1

MAX5491: Precision-Matched Resistor-Divider in SOT23 Data Sheet (Rev.3)

Reliability Data 1

MAX5491 Reliability Data

Design Note 1

ADC Input Translator

Technical Articles 9

3V DACs Used in ±10V Applications
Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface
The Zero-Transistor IC, a New Plateau in IC Design
Saving Energy: Little Things Mean a Lot
Minimize Voltage Offsets in Precision Amplifiers
Rail Splitter, from Abraham Lincoln to Virtual Ground
A Power Engineer: the Super Hero in a Design?
Challenge the Conventional - Make Unipolar DACs Bipolar
How to Achieve 7.5-Digit Accuracy in Instrumentation Applications: Part 1

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
MAX5491LA01000+ 3-SOT_23-N/A external-link
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MAX5491VA10000+ 3-SOT_23-N/A external-link
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