MAX5450

Dual, 256-Tap, Up/Down Interface, Digital Potentiometers

Industry's Smallest Dual 256-Tap Digital Potentiometer


Please check latest availability status for a specific part variant.

Description

The MAX5450—MAX5455 are a family of dual digital potentiometers that perform the same function as a mechanical potentiometer or variable resistor. The MAX5451/MAX5453/MAX5455 have two 3-terminal potentiometers and the MAX5450/MAX5452/MAX5454 have two 2-terminal variable resistors. The MAX5450—MAX5455 operate from a +2.7V to +5.5V single-supply voltage and use an ultra-low supply current of 0.1µA. These devices consist of two fixed resistors each with 256 digitally-controlled wiper contacts. The convenient power-on reset (POR) sets the wiper to midscale position at power-up and the easy-to-use up/down interface allows glitchless switching between resistor taps. Six inputs control the 14-pin MAX5451/MAX5453/MAX5455 potentiometers. Four inputs control the 10-pin MAX5450/MAX5452/MAX5454 variable resistors.

The MAX5450—MAX5455 are ideal for applications requiring digitally-controlled resistors. Three resistance values are available: 10kΩ, 50kΩ, and 100kΩ. An end-to-end resistor temperature coefficient of 35ppm/°C and a ratiometric temperature coefficient of 5ppm/°C make the MAX5450—MAX5455 excellent choices for adjustable gain circuit requiring low-temperature drift.

The MAX5450—MAX5455 are available in 10-pin µMAX® and 14-pin TSSOP packages. Each device is guaranteed over the extended—industrial temperature range (-40°C to +85°C).
MAX5450, MAX5451, MAX5452, MAX5453, MAX5454, MAX5455: Pin Configuration MAX5450, MAX5451, MAX5452, MAX5453, MAX5454, MAX5455: Pin Configuration Enlarge+

Key Features

  • Small-Footprint Packages
    • 10-Pin µMAX (MAX5450/MAX5452/MAX5454)
    • 14-Pin TSSOP (MAX5451/MAX5453/MAX5455)
  • 256-Tap Positions
  • Independent Up/Down Potentiometer Controls (MAX5451/MAX5453/MAX5455)
  • Ultra-Low 0.1µA Supply Current
  • +2.7V to +5.5V Single-Supply Operation
  • Low 35ppm/°C End-to-End Temperature Coefficient
  • Power-On Reset Sets Wiper to Midscale (Position 127)
  • Glitchless Switching Between the Resistor Taps
  • 10kΩ, 50kΩ, 100kΩ Resistance Values

Applications/Uses

  • Adjustable Linear Regulators
  • Adjustable Voltage Reference
  • Impedance Matching
  • LCD Screen Adjustment
  • Low-Drift Programmable-Gain Amplifier (PGA)
  • Mechanical Potentiometer Replacement
  • Programmable Filters, Delays, Time Constants
  • Volume Control
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
MAX5450 Linear2Up/DownVolatile2561025352252
UMAX/10
$2.64 @1k
MAX5451 10
TSSOP/14
MAX5452 50
UMAX/10
MAX5453 50
TSSOP/14
MAX5454 100
UMAX/10
MAX5455 100
TSSOP/14
See All Digital Potentiometers (120)
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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

Tutorial 4992 Reduce the Chances of Human Error: Part 1, Power and Ground
Tutorial 4292 Where Is Ground?
Tutorial 3081 How to Increase the Bandwidth of Digital Potentiometers 10x to 100x

Quality and Environmental Data

Product Reliability Reports: MAX5450.pdf 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
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