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DS1805

Addressable Digital Potentiometer

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
DS1805	Active: In Production. See Ordering Information for details.

Description

The DS1805 addressable digital potentiometer contains a single 256-position digitally controlled potentiometer. Device control is achieved through a 2-wire serial interface. Device addressing is provided through three address inputs that allow up to eight devices on a single 2-wire bus. The exact wiper position of the potentiometer can be written or read. The DS1805 is available in 16-pin SO and 14-pin TSSOP packages. The device is available in three standard resistance values: 10kΩ, 50kΩ, and 100kΩ. The DS1805 is specified over the industrial temperature range. The DS1805 provides a low-cost alternative for designs based on the DS1803, but require only a single potentiometer.

Data Sheet

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

Key Features

3V or 5V Operation
Low Power Consumption
One Digitally Controlled, 256-Position Potentiometer
Compatible with DS1803-Based Designs
14-Pin TSSOP (173mil) and 16-Pin SO (150mil) Available for Surface-Mount Applications
Three Address Inputs
Serial 2-Wire Bus
Operating Temperature Range
- Industrial: -40°C to +85°C
Standard Resistance Values
- DS1805-010: 10kΩ
- DS1805-050: 50kΩ
- DS1805-100: 100kΩ

Applications/Uses

CCFL Inverters
Instrumentation and Industrial Controls
Multimedia Products
PDAs and Cell Phones
Portable Electronics

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

DS1805

Linear

2-Wire Addressable

Volatile

256

100

550

400

61.9

$1.10 @1k

See All Digital Potentiometers (129)

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

Functional Diagram

Application Notes

Application Note 3081		How to Increase the Bandwidth of Digital Potentiometers 10x to 100x
Application Note 3317		Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software
Application Note 3996		Logging the Linear Digital Potentiometer
Application Note 4011		How to Construct a Pushbutton Controller for the DS1803/DS1805 Digital Potentiometers
Application Note 4051		Using an Analog Voltage to Control a Digital Potentiometer
Application Note 4290		Ratiometric Design Overcomes the 25% Tolerance of a Digital Potentiometer
Application Note 4291		Stack References for Higher Adjustable Voltages from a Digital Pot

Reliability Reports

Reliability Report:

DS1805.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Notes	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1805E-010	10kohms			Active		TSSOP;14 pin;33.4 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
DS1805E-010+	10kohms			Active		TSSOP;14 pin;33.4 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
DS1805E-010+T&R	10kohms			Active		TSSOP;14 pin;33.4 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
DS1805E-010+T&R/W			N/A	No Longer Available	DS1805E-010+T&R	TSSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet
DS1805E-010/T&R	10kohms			Active		TSSOP;14 pin;33.4 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
DS1805Z-010	10kohms			Active		SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1805Z-010+	10kohms			Active		SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1805Z-010+T&R	10kohms			Active		SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1805Z-010/T&R	10kohms			Active		SOIC(N);16 pin;61.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0097 (PDF) Use pkgcode/variation: S16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.

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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; 2006-11-10
This page last modified: 2009-10-14