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Data Sheet

FULL DATA SHEET (PDF, 392kB) Download   E-Mail

Description

The DS3904/DS3905 contain three nonvolatile (NV) low temperature coefficient, variable digital resistors. Each resistor has 128 user-selectable positions. Additionally, the DS3904/DS3905 have a high-impedance setting that allows each resistor to function as a digital switch. The DS3904/DS3905 can operate over a 2.7V to 5.5V supply voltage range, and communication with the device is achieved through a 2-wire serial interface. Address pins allow multiple DS3904/DS3905s to operate on the same two-wire bus. The DS3904 has one address pin, allowing two DS3904s to share the bus, while the DS3905 has three address pins, allowing up to eight DS3905s to share a common bus. The low-cost and small size of the DS3904/DS3905 make them ideal replacements for conventional mechanical trimming resistors.

Key Features		Applications/Uses
Three 20kΩ, 128-Position Linear Digital Resistors Resistor Settings are Stored in NV Memory Each Resistor has a High-Impedance Setting for Switch Operation to Control Digital Logic Low Temperature Coefficient 2-Wire Serial Interface 2.7V to 5.5V Operating Range -40°C to +85°C Industrial Temperature Packaging: 8-Pin µSOP for DS3904, 10-pin µSOP for DS3905		Cell Phones/PDAs Fibre Optic Transceiver Modules Portable Electronics Power-Supply Calibration Test Equipment

Application Notes

Application Note 238: 2-Wire Controlled Digital DIP Switch Using the DS3904 - DS3904 Application Note 3315: Writing Parallel-Port 2-Wire Software in C - DS3904 Application Note 3317: Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software - DS3904 Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - DS3904, DS3905 Application Note 4101: Differentiating Digital Potentiometer Features - DS3904

Evaluation Kits

none

Design Guides

DIGITAL POTENTIOMETERS (PDF)

Reliability Reports

Reliability Report: DS3904.pdf DS3905.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: 1-10 of 10
DS3904	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS3904U-010+				uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3904U-010+T&R				uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3904U-020/T&R	20kohms			uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3904U-020+T&R	20kohms			uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3904U-020+	20kohms			uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3904U-020	20kohms			uMAX;8 pin; Dwg: 21-0036K (PDF) Use pkgcode/variation: U8-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3905	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS3905U-020	20kohms			uMAX;10 pin; Dwg: 21-0061L (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS3905U-020+				uMAX;10 pin; Dwg: 21-0061L (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3905U-020+T&R				uMAX;10 pin; Dwg: 21-0061L (PDF) Use pkgcode/variation: U10+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS3905U-020/T&R				uMAX;10 pin; Dwg: 21-0061L (PDF) Use pkgcode/variation: U10-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

More Information

New Product Press Release 2003-02-24

Related Products

DS3903 Triple 128-Position Nonvolatile Digital Potentiometer

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