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Part Number: DS1848

 

MFG: MAXIM

Package Cooled: 260

D/C: 00+

Description: The DS1848 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256-position linear, variable...


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DS1848 General Description


The DS1848 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256-position linear, variable resistors. The DS1848-050 consists of one 10kand one 50kwhile the DS1848-010 consists of two 10kresistors; 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.

DS1848 Maximum Ratings

Voltage on Any Pin Relative to Ground .....................-0.3V to +6.0V
Operating Temperature .......................................-40°C to +95°C
Programming Temperature..................................... 0°C to +70°C
Storage Temperature ........................................-55°C to +125°C
Soldering Temperature ......................See J-STD-020A specification
* This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.

DS1848 Features

 Two linear taper, temperature-controlled variable resistors
 DS1848-050
    One 50k, 256 position
    One 10k, 256 position
 DS1848-010
 Two 10k, 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: -40ºC to +95ºC
 Programming temperature: 0ºC to +70ºC
 128 bytes of user EEPROM

DS1848 Connection Diagram

DS1848 Connection Diagram

DS1848 datasheet

DS1848
PDF/DataSheet Download

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