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MAX5400

Maxim
Part Number MAX5400
Manufacturer Maxim
Description 256-Tap SOT-PoT / Low-Drift Digital Potentiometers in SOT23
Published Apr 29, 2005
Detailed Description 19-1848; Rev 0; 10/00 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 General Description The MAX5400/MAX540...
Datasheet PDF File MAX5400 PDF File

MAX5400
MAX5400


Overview
19-1848; Rev 0; 10/00 256-Tap SOT-PoT, Low-Drift Digital Potentiometers in SOT23 General Description The MAX5400/MAX5401 digital potentiometers offer 256-tap SOT-PoT™ digitally controlled variable resistors in tiny 8-pin SOT23 packages.
Each device functions as a mechanical potentiometer, consisting of a fixed resistor string with a digitally controlled wiper contact.
They operate from +2.
7V to +5.
5V single-supply voltages and use an ultra-low supply current of 0.
1µA.
These devices also provide glitchless switching between resistor taps, as well as a convenient poweron reset 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 MAX5400/MAX5401 serve 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 50ppm/°C allows these parts to be used as variable resistors in applications such as low-tempco adjustable gain and other circuit configurations.
Two resistance values are available: 50kΩ (MAX5400) and 100kΩ (MAX5401).
Each device is guaranteed over the extended industrial temperature range (-40°C to +85°C).
o Miniature 8-Pin SOT23 (3mm x 3mm) o 256 Tap Positions o Ultra-Low 0.
1µA Supply Current o Single-Supply Operation: +2.
7V to +5.
5V o Low Ratiometric Temperature Coefficient: 5ppm/°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 50kΩ/100kΩ Resistor Values Features MAX5400/MAX5401 Ordering Information PART MAX5400EKA-T MAX5401EKA-T TEMP.
RANGE -40°C to +85°C -40°C to +85°C PINPACKAGE 8-SOT23 8-SOT23 R (kΩ) 50 100 ________________________Applications Mechanical Potentiometer Replacement Low-Drift PGAs Adjustable Voltage References SOT-PoT is a trademark of Maxim Integrated Products.
SPI is a trademark of Motorola,...


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