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Status

Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 632kB) Download   E-Mail

Description

The DS3903 contains three nonvolatile (NV) low temperature coefficient digital potentiometers, which can be accessed through a 2-wire bus. The DS3903 operates in both 3V and 5V systems, and it features a write-protect pin that can lock the positions of the potentiometers. An address pin allows two DS3903s to be placed on the same 2-wire bus.

Key Features		Applications/Uses
Three 128-Position Linear Potentiometers (Two 10kΩ, One 100kΩ) NV Wiper Storage Low End-to-End Temperature Coefficient Operates on an Industry-Standard 2-Wire Bus Write-Protect Pin Supply Range: 3V or 5V Operating Temperature Range: -40°C to +85°C Packaging: 20-Pin TSSOP		A Small and Low-Cost Replacement for Mechanical Potentiometers Fiber Optic Transceiver Modules Mobile Phones and PDAs Portable Electronics Power Supply Calibration

Diagram

Typical Operating Circuit

Application Notes

Application Note 225: Using Digital Potentiometers in Adjustable Step-Down DC-DC Converter Designs - DS3903 Application Note 235: Using Spare NV Digital Pots as NV Digital Configuration Bits - DS3903 Application Note 3077: A Digitally Controllable Lowpass Filter Using a Digital Potentiometer - DS3903 Application Note 3315: Writing Parallel-Port 2-Wire Software in C - DS3903 Application Note 3317: Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software - DS3903 Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - DS3903

Design Guides

Thermal Management (PDF) Communications (PDF) Digital Potentiometers (PDF)

Reliability Reports

Reliability Report: DS3903.pdf

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: 1-5 of 5

DS3903	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS3903E-020/W				Active	TSSOP;20 pin;45 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3903E-020	10k/100kohms			Active	TSSOP;20 pin;45 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3903E-020/T&R	10k/100kohms			Active	TSSOP;20 pin;45 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3903E-020+T&R	10k/100kohms			Active	TSSOP;20 pin;45 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3903E-020+	10k/100kohms			Active	TSSOP;20 pin;45 mm² Outline Drawing: 21-0066 (PDF) Land Pattern: 90-0116 (PDF) Use pkgcode/variation: U20+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2002-08-27  Temperature Family by Product Type

Related Products

DS1846 NV Tri-Potentiometer, Memory and MicroMonitor More Like This: View Product Families for Similar Products See All Digital Potentiometers (123 Products)

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Technical Documents

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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