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DS1848

Dual Temperature-Controlled NV Variable Resistor & Memory

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS1848 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256- position linear, variable resistors. The DS1848-050 consists of one 10kΩand one 50kΩ, while the DS1848-010 consists of two 10kΩ resistors; both incorporate a direct-to-digital temperature sensor. The device provides an ideal method for setting and temperature-compensating bias voltages and currents in control applications using a minimum of circuitry.

The variable resistors settings are stored in EEPROM memory and can be accessed over the industry standard 2-wire serial bus. The value of each variable resistor is determined by a temperature-addressed look-up table, which can assign a unique value to each resistor for every 2°C increment over the -40°C to +95°C range. The output of the digital temperature sensor is also available as a 13-bit, 2's complement value over the serial bus. The interface I/O pins consist of SDA and SCL.

Data Sheet

Download	Rev 2	(PDF, 264kB)
E-Mail

Key Features

Two linear taper, temperature-controlled variable resistors
DS1848-050
- One 50kΩ, 256 position
- One 10kΩ, 256 position
DS1848-010
- Two 10kΩ, 256 position
Resistor settings changeable every 2°C
Access to temperature data and device control via a 2-wire interface
Operates from 3V or 5V supplies
Packaging: 14-pin TSSOP, 16-ball CSBGA
Operating temperature: -40°C to +95°C
Programming temperature: 0°C to +70°C
128 bytes of user EEPROM

Key Specifications:

Digital Potentiometers

Part Number

Taper

POTs

Control Interface

Wiper Memory

Steps

R_END-TO-END
(kΩ)

Res. Tol.
(%)

Temp. Coeff.
(ppm/°C)

I_CC @5V
(µA)

Smallest Available Pckg.
(mm²)

Budgetary Price

typ

max

max w/pins

See Notes

DS1848

Linear

2-Wire Addressable

Non-Volatile

256

10+50

850

1000

$2.24 @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

Pin Assignment

Application Notes

Application Note 167		Considerations for the DS1847/DS1848 Look-Up Tables
Application Note 181		DS1847/DS1848 Temperature Coefficient Supplement
Application Note 216		How to Interpret DS1847/DS1848 Temperature Readings
Application Note 233		Regenerating the DS1847/DS1848 Resistor Calibration Constants
Application Note 237		Introduction of the DS1847 for Industrial Controls
Application Note 593		Dallas Semiconductor Digital Potentiometers: Frequently Asked Questions
Application Note 1769		Behind the Light Show in Optical Transceivers
Application Note 2099		DS1847/DS1848 Online Interactive Temperature Calculator
Application Note 3175		Base-Station RF Power-Amplifier Biasing
Application Note 3230		How to Use a PC's Parallel Port to Communicate with 2-Wire Devices
Application Note 3481		Using the DS1859 with External EEPROM
Application Note 3953		Side-by-Side Comparison of Fiber-Monitoring and Control ICs
Application Note 4051		Using an Analog Voltage to Control a Digital Potentiometer
Tutorial 4993		Reduce the Chances of Human Error: Part 2, Super Amps and Filters for Analog Interface

Product Guides

Signal Chain (PDF)

Reliability Reports

Reliability Report:

DS1848.pdf

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1848/NRE				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
DS1848B-010	10kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-010+	10kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-010+T&R	10kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-010/T&R	10kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-050	10k/50kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-050+	10k/50kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-050+T&R	10k/50kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-050/T&R	10k/50kohms			Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-C10/T&R				Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Notes	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1848B-C50/T&R				Active	CSBGA;16 pin;16 mm² Outline Drawing:21-0355 (PDF) Land Pattern: 90-0334 (PDF) Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848E-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
DS1848E-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
DS1848E-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
DS1848E-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
DS1848E-050	10k/50kohms			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
DS1848E-050+	10k/50kohms			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
DS1848E-050+T&R	10k/50kohms			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
DS1848E-050/T&R	10k/50kohms			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

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 2; 2006-01-18
This page last modified: 2009-10-28