The MAX5427/MAX5428/MAX5429 linear-taper digital
potentiometers function as mechanical potentiometers,
but replace the mechanics with a simple 2-wire digital
interface. These digital potentiometers are unique in that
they have an optional one-time programmable feature
that either sets the wiper's power-on reset (POR) position
to a user-defined value, or the wiper can be set and
the interface disabled to prevent further adjustment.
The MAX5427 has an end-to-end resistance of 100kΩ,
the MAX5428 a resistance of 50kΩ, and the MAX5429 a
resistance of 10kΩ. All these devices have 32 wiper
positions, operate from a single 2.7V to 5.5V supply, and
use less than 1.5µA (max) static supply current.
The MAX5427/MAX5428/MAX5429 are available in
8-pin thin QFN and µMAX® packages. Each device is
guaranteed over the extended temperature range of
-40°C to +85°C.
Key Features
Applications/Uses
Wiper Position Stored After One-Time Fuse Programming
User-Defined Power-On Reset Position
35ppm/°C End-to-End Temperature Coefficient and 5ppm/°C Ratiometric Temperature Coefficient
32 Tap Positions
Tiny 8-Pin QFN and µMAX Packages
Ultra-Low 1.5µA (max) Static Supply Current
2.7V to 5.5V Single-Supply Operation
Wiper Position Programmed Through Simple
2-Wire Serial Interface
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.
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