MAX5490

100kΩ Precision-Matched Resistor-Divider in SOT23

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

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Active: In Production.

Description

The MAX5490 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 MAX5490 provides an extremely low resistance-ratio temperature drift of 1ppm/°C (typ) over -55°C to +125°C, and has an end-to-end resistance of 100kΩ. Resistance ratios from 1:1 to 100:1 are available. Five standard ratios are available (see Table 1 in the full data sheet), and custom ratios are also available upon request. The MAX5490 is ideal for precision gain-setting applications where tight resistance matching and low temperature drift are necessary.

The MAX5490 is available in a space-saving 3-pin SOT23 package, and is guaranteed over the military -55°C to +125°C temperature range.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 2 (PDF, 192kB)
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Key Features

  • Resistance Ratios from 1:1 to 100:1
  • Custom Ratios Available Upon Request
  • Tight Initial Ratio Accuracy
    • 0.035% (MAX5490A)
    • 0.05% (MAX5490B)
    • 0.1% (MAX5490C)
  • Low 1ppm/°C (typ) Resistor-Ratio-Drift
  • Up to 80V Operating Voltage Across Sum of R1 and R2
  • Tiny 3-Pin SOT23 Package
 

Applications/Uses

  • Automated Test Equipment (ATE)
  • Industrial Process Controls
  • Instrumentation
  • Medical Equipment
  • Precision Gain Setting
  • Wireless Base Stations
   

Key Specifications:

Digital Potentiometers
Part Number REND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Smallest Available Pckg.
(mm2)
Budgetary Price
typ max w/pins See Notes
MAX5490  100 0.025 35 8 $0.67 @1k
See All Digital Potentiometers (129)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX5490: Block Diagram
Block Diagram

More Information

New Product Press Release 2004-08-03 ]

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Information Index

Document Ref.: 19-3337 Rev 2; 2005-03-22
This page last modified: 2009-11-30




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