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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 264kB) Download   E-Mail

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 power-on 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).

Key Features		Applications/Uses
Miniature 8-Pin SOT23 (3mm x 3mm) 256 Tap Positions Ultra-Low 0.1µA Supply Current Single-Supply Operation: +2.7V to +5.5V Low Ratiometric Temperature Coefficient: 5ppm/°C Power-On Reset: Wiper Goes to Midscale (Position 128) Glitchless Switching Between the Resistor Taps 3-Wire SPI™-Interface Compatible 50kΩ/100kΩ Resistor Values		Adjustable Voltage Reference Low-Drift Programmable-Gain Amplifiers Mechanical Potentiometer Replacements

Diagram

Functional Diagram

Application Notes

Application Note 864: EPOT Applications: Gain Adjustment in Op-Amp Circuits - MAX5400 Application Note 3464: Precision Current Source is Software-Programmable - MAX5400 Application Note 3996: Logging the Linear Digital Potentiometer - MAX5400, MAX5401 Application Note 4290: Ratiometric Design Overcomes the 25% Tolerance of a Digital Potentiometer - MAX5400 Application Note 4291: Stack References for Higher Adjustable Voltages from a Digital Pot - MAX5400 Application Note 4345: Well Grounded, Digital Is Analog - MAX5400, MAX5401

Reliability Reports

Show FIT data for: MAX5400 MAX5401 Request Reliability Report for: MAX5400 MAX5401

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-8 of 8

MAX5400	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5400EKA			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5400EKA+			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5400EKA-T			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5400EKA+T			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5401	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5401EKA			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5401EKA+			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5401EKA-T			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5401EKA+T			Active	SOT;8 pin;9 mm² Outline Drawing: 21-0078 (PDF) Land Pattern: 90-0176 (PDF) Use pkgcode/variation: K8SN+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

Topmark Coding: MAX5400 MAX5401 New Product Press Release 2000-12-13

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