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MAX5402

Maxim
Part Number MAX5402
Manufacturer Maxim
Description 256-Tap / PoT / Low-Drift / Digital Potentiometer
Published Apr 29, 2005
Detailed Description 19-1896; Rev 0; 1/01 256-Tap, µPoT, Low-Drift, Digital Potentiometer General Description The MAX5402 µPoT™ digital pote...
Datasheet PDF File MAX5402 PDF File

MAX5402
MAX5402


Overview
19-1896; Rev 0; 1/01 256-Tap, µPoT, Low-Drift, Digital Potentiometer General Description The MAX5402 µPoT™ digital potentiometer is a 256-tap variable resistor with 10kΩ total resistance in a tiny 8pin µMAX package.
This device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact.
It operates from +2.
7V to +5.
5V single-supply voltages and uses an ultra-low 0.
1µA supply current.
This device also provides glitchless switching between resistor taps, as well as a convenient power-on reset (POR) that sets the wiper to the midscale position at power-up.
A low 5ppm/°C ratiometric temperature coefficient makes it ideal for applications requiring low drift.
The MAX5402 serves well in applications requiring digitally controlled resistors, including adjustable voltage references and programmable gain amplifiers (PGAs).
A nominal end-to-end resistor temperature coefficient of 35ppm/°C makes this part suitable for use as a variable resistor in applications such as low-tempco adjustable gain and other circuit configurations.
This device is guaranteed over the extended industrial temperature range (-40°C to +85°C).
o Ultra-Low 100nA Supply Current o +2.
7V to +5.
5V Single-Supply Operation o 256 Tap Positions o Low Ratiometric Temperature Coefficient 5ppm/°C o Low End-to-End Resistor Temperature Coefficient 35ppm/°C o Power-On Reset: Wiper Goes to Midscale (Position 128) o Glitchless Switching Between the Resistor Taps o 3-Wire SPI™-Interface Compatible o 10kΩ Resistor Value Features o Small Footprint, 8-Pin µMAX Package MAX5402 ________________________Applications Mechanical Potentiometer Replacement Low-Drift PGAs Adjustable Voltage References PART MAX5402EUA Ordering Information TEMP.
RANGE -40°C to +85°C PINPACKAGE 8 µMAX R (kΩ) 10 µPoT is a trademark of Maxim Integrated Products.
SPI is a trademark of Motorola, Inc.
Functional Diagram VDD Pin Configuration TOP VIEW H R 8 8-BIT SHIFT REGISTER R 8-BIT LA...


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