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MAX5427, MAX5428, MAX5429 pdf
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2008-11-19
王敏
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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.
Applications
Mechanical Potentiometer Replacement
Products Using One-Time Factory Calibration
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.
Applications
Mechanical Potentiometer Replacement
Products Using One-Time Factory Calibration
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