MAX5451:Dual, 256-Tap, Up/Down Interface, Digital Potentiometers

Industry's Smallest Dual 256-Tap Digital Potentiometer

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).

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
MAX5450, MAX5451, MAX5452, MAX5453, MAX5454, MAX5455: Pin Configuration
MAX5450, MAX5451, MAX5452, MAX5453, MAX5454, MAX5455: Pin Configuration
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
DataSheet
titleDownload file
MAX5450-MAX5455 Data SheetMAX5450-MAX5455.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
MAX5450Linear2Up/DownVolatile2561025352252µMAX/10$2.51 @1k
MAX545110TSSOP/14
MAX545250µMAX/10
MAX545350TSSOP/14
MAX5454100µMAX/10
MAX5455100TSSOP/14
Related Products
  • MAX5404:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX
  • MAX5405:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX
  • MAX5403:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 10-µMAX
  • MAX5414:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP
  • MAX5415:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP
  • MAX5413:Dual, 256-Tap, Low-Drift, Digital Potentiometers in 14-Pin TSSOP
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5451EUDNo Longer AvailableMAX5451EUD+TSSOP,;14 pin;33.4 mm²-40°C to +85°CNo
MAX5451EUD+ActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX5451EUD+TActiveTSSOP,;14 pin;33.4 mm²-40°C to +85°CLead Free
MAX5451EUD-TNo Longer AvailableMAX5451EUD+TTSSOP;14 pin-40°C to +85°CSee data sheet
MAX5450-MAX5455.pdf MAX5455
Reduce the Chances of Human Error: Part 1, Power and Ground MAX5481
MAX5450-MAX5455.pdf MAX5455