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MAX5436, MAX5437, MAX5438, MAX5439

±15V, 128-Tap, Low-Drift Digital Potentiometers

128-Tap, Low-Drift, High-Voltage (±5V to ±15V) Digital Potentiometers in Packages Half the Size of Comparable Devices in 8-Pin SO
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Active: In Production.

Description

The MAX5436-MAX5439 are 128-tap high-voltage (±5V to ±15V) digital potentiometers in packages that are half the size of comparable devices in 8-pin SO. They perform the same function as mechanical potentiometers, but replace the mechanics with a simple digital interface. The digital logic is powered by a separate single +2.7V to +5.25V supply voltage (VCC). The resistor string uses its own analog supplies (VDD and VSS) that require VDD - VSS to be greater than 9V and less than 31.5V. This allows for greater flexibility in voltage ranges that can be used with these devices. Examples of analog supply ranges include not only dual voltages of ±5V to ±15V, but single-supply voltages, such as +10V, +15V, +30V, -30V, and more, as long as the ranges of VDD - VSS and VCC - VSS are met.

The MAX5437/MAX5439 include an on-chip, high-voltage, uncommitted amplifier, providing additional reductions in board space and cost. Other features include low 35ppm/°C end-to-end and 5ppm/°C ratio-metric resistor temperature coefficients, a 3-wire SPI™/QSPI™/MICROWIRE™-compatible serial interface, and a power-on reset to midscale.

The MAX5436/MAX5438 are available in 10-pin µMAX® packages. The MAX5437/MAX5439 are available in 14-pin TSSOP package. Each device is guaranteed over the extended temperature range of -40°C to +85°C.

Data Sheet

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Key Features

  • +10V to +30V Single-Supply Operation
  • -28V to -10V Single Negative Supply Operation
  • ±5V to ±15V Dual-Supply Operation
  • 128 Tap Positions
  • Uncommitted High-Voltage Amplifier (MAX5437/MAX5439)
  • Low Temperature Coefficient
    • 35ppm/°C (End-to-End)
    • 5ppm/°C (Ratiometric)
  • Small-Footprint Packages
    • 10-Pin µMAX (MAX5436/MAX5438)
    • 14-Pin TSSOP (MAX5437/MAX5439)
  • Glitchless Switching Between the Resistor Taps
  • 3-Wire SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • 50kΩ/100kΩ End-to-End Resistances
  • Power-On Reset: Wiper Goes to Midscale (Position 64)
 

Applications/Uses

  • Audio Volume Control
  • Data Acquisition Systems
  • LCD Screen Contrast Adjustment
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
   

Key Specifications:

Digital Potentiometers
Part Number Taper POTs Control Interface Wiper Memory Steps REND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Budgetary
Price
typ typ max See Notes
MAX5436  Linear 1 3-Wire Serial SPI Volatile 128 50 25 35 900 60 $3.51 @1k
MAX5437  50 $4.73 @1k
MAX5438  100 $3.51 @1k
MAX5439  100 $4.73 @1k
See All Digital Potentiometers (128)

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.



Diagram

MAX5436, MAX5437, MAX5438, MAX5439: Pin Configuration
Pin Configuration

More Information

New Product Press Release   2002-11-19 ]

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Document Ref.: 19-2657 Rev 3; 2004-09-28
This page last modified: 2009-10-14