QuickView

Technical Documents

Ordering Info

More Information

User Comments (0)

All

Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 700kB) Download   E-Mail

Description

The MAX5477/MAX5478/MAX5479 nonvolatile, dual, linear-taper, digital potentiometers perform the function of a mechanical potentiometer, but replace the mechanics with a simple 2-wire digital interface. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. A write-protect feature prevents accidental overwrites of the EEPROM. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity in many applications. Three address inputs allow a total of eight unique address combinations. The MAX5477/MAX5478/MAX5479 provide three nominal resistance values: 10k (MAX5477), 50k (MAX5478), or 100k (MAX5479). The nominal resistor temperature coefficient is 70ppm/°C end-to-end and 10ppm/°C ratiometric. The low temperature coefficient makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gain-amplifier circuit configurations. The MAX5477/MAX5478/MAX5479 are available in 16-pin 3mm x 3mm x 0.8mm thin QFN and 14-pin 4.4mm x 5mm TSSOP packages. These devices operate over the extended -40°C to +85°C temperature range.

An evaluation kit is available:  MAX5478EVCMODU, MAX5478EVKIT  

Key Features		Applications/Uses
Power-On Recall of Wiper Position from Nonvolatile Memory EEPROM Write Protection Tiny 3mm x 3mm x 0.8mm Thin QFN Package 70ppm/°C End-to-End Resistance Temperature Coefficient 10ppm/°C Ratiometric Temperature Coefficient Fast 400kbps I²C-Compatible Serial Interface 1µA (max) Static Supply Current Single-Supply Operation: +2.7V to +5.25V 256 Tap Positions per Potentiometer ±0.5 LSB DNL in Voltage-Divider Mode ±1 LSB INL in Voltage-Divider Mode EV Kit Available		Liquid-Crystal Display (LCD) Contrast Control Low-Drift Programmable-Gain Amplifiers Mechanical Potentiometer Replacements Volume Control

Diagram

Functional Diagram

Application Notes

Application Note 3996: Logging the Linear Digital Potentiometer - MAX5477, MAX5478, MAX5479 Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - MAX5477, MAX5478, MAX5479

Evaluation Kits

MAX5478EVCMODU, MAX5478EVKIT

Design Guides

Digital Potentiometers (PDF)

Reliability Reports

Reliability Report: MAX5477.pdf MAX5478.pdf MAX5479.pdf Show FIT data for: MAX5477 MAX5478 MAX5479

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: 1-26 of 26

MAX5477	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5477ETE#TG16			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5477ETE+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5477ETE#G16			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633FH-3*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
MAX5477ETE+			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5477EUD+			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5477EUD+T			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5478	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5478ETE#TG16			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5478ETE#G16			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633FH-3*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
MAX5478ETE+			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5478ETE+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5478ETE			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5478ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5478EUD			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5478EUD-T			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5478EUD+			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5478EUD+T			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5479	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX5479ETE#TG16			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5479ETE#G16			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633FH-3*	-40°C to +85°C	RoHS/Lead-Free: RoHS Qualified Materials Analysis
MAX5479ETE+			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5479ETE+T			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5479ETE			Active	TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0033 (PDF) Use pkgcode/variation: T1633F-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5479ETE-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5479EUD			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX5479EUD-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX5479EUD+			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX5479EUD+T			Active	TSSOP;14 pin;33 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0113 (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

Topmark Coding: MAX5477 MAX5478 MAX5479 New Product Press Release 2005-03-21  2004-08-14

Related Products

MAX5422, MAX5423, MAX5424 256-Tap, Nonvolatile, SPI-Interface, Digital Potentiometers MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419 256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers More Like This: View Product Families for Similar Products See All Digital Potentiometers (121 Products)

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits