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Data Sheet

FULL DATA SHEET (PDF, 264kB) Download   E-Mail

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.

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

Application Notes

Application Note 166: Interfacing Digitally Controlled Potentiometers and Resistors to Laser Drivers - DS1848 Application Note 167: Considerations for the DS1847/DS1848 Look-Up Tables - DS1848 Application Note 181: DS1847/DS1848 Temperature Coefficient Supplement - DS1848 Application Note 216: How to Interpret DS1847/DS1848 Temperature Readings - DS1848 Application Note 233: Regenerating the DS1847/DS1848 Resistor Calibration Constants - DS1848 Application Note 237: Introduction of the DS1847 for Industrial Controls - DS1848 Application Note 593: Dallas Semiconductor Digital Potentiometers: Frequently Asked Questions - DS1848 Application Note 1769: Behind the Light Show in Optical Transceivers - DS1848 Application Note 2099: DS1847/DS1848 Online Interactive Temperature Calculator - DS1848 Application Note 3175: Base-Station RF Power-Amplifier Biasing - DS1848 Application Note 3230: How to Use a PC's Parallel Port to Communicate with 2-Wire Devices - DS1848 Application Note 3481: Using the DS1859 with External EEPROM - DS1848 Application Note 3953: Side-by-Side Comparison of Fiber-Monitoring and Control ICs - DS1848 Application Note 4051: Using an Analog Voltage to Control a Digital Potentiometer - DS1848

Evaluation Kits

none

Design Guides

DIGITAL POTENTIOMETERS (PDF)

Reliability Reports

Reliability Report: DS1848.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: 1-19 of 19
DS1848	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1848B-C50/T&R				CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	See data sheet Materials Analysis
DS1848B-C10/T&R				CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	See data sheet Materials Analysis
DS1848B-010	10kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-050+T&R	10k/50kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-050+	10k/50kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-010+T&R	10kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-010+	10kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848B-050	10k/50kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-010/T&R	10kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848B-050/T&R	10k/50kohms			CSBGA;16 pin; Dwg: 56-G6005-001 Use pkgcode/variation: X16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848/NRE					-40°C to +85°C	See data sheet
DS1848E-050+T&R	10k/50kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848E-050+	10k/50kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848E-010+T&R	10kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848E-010+	10kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1848E-010	10kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848E-050	10k/50kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848E-010/T&R	10kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1848E-050/T&R	10k/50kohms			TSSOP;14 pin; Dwg: 21-0066J (PDF) Use pkgcode/variation: U14-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

More Information

New Product Press Release 2001-05-09

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