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DS3902

Dual, NV, Variable Resistors with User EEPROM

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS3902 features a dual, nonvolatile (NV), low temperature-coefficient, variable digital resistor with 256 user-selectable positions. The DS3902 can operate over a wide supply range of 2.4V to 5.5V, and communication with the device is achieved through an I²C compatible serial interface. Internal address settings allow the DS3902 slave address to be programmed to one of 128 possible addresses. The low cost and the small size of the DS3902 make it an ideal replacement for conventional mechanical-trimming resistors.

Data Sheet

Download	Rev 1	(PDF, 260kB)
E-Mail

Key Features

Dual 256-Position Linear Digital Resistors
Available as 50kΩ/30kΩ or 50kΩ/15kΩ
Resistor Settings Stored in NV Memory
Low Temperature Coefficient
I²C-Compatible Serial Interface
Wide Operating Voltage (2.4V to 5.5V)
Software Write Protection
User-EEPROM Memory
Programmable Slave Address
Operating Temperature Range: -40°C to +95°C
Small 8-Pin µSOP Package

Applications/Uses

Audio Power-Amp Biasing
Instrumentation and Industrial Controls
Optical Transceivers
Optical Transponders
Replacement for Mechanical Variable Resistors and Dip Switches
RF Power Amps

Key Specifications:

Digital Potentiometers

Part Number

Taper

POTs

Control Interface

Wiper Memory

Steps

R_END-TO-END
(kΩ)

Res. Tol.
(%)

Temp. Coeff.
(ppm/°C)

Wiper Resistance
(Ω)

I_CC @5V
(µA)

Smallest Available Pckg.
(mm²)

Budgetary Price

typ

max

max w/pins

See Notes

DS3902

Linear

2-Wire Addressable

Non-Volatile

256

50 + (30 or 15)

300

160

200

15.6

$0.80 @1k

See All Digital Potentiometers (126)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Rev 1; 2006-02-28
This page last modified: 2010-05-19