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DS1847：Dual Temperature-Controlled NV Variable Resistor

The DS1847 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256- position linear, variable resistors. The DS1847-050 consists of one 10kΩ and one 50kΩ, while the DS1847-010 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 DS1847-050 One 50kΩ, 256 position One 10kΩ, 256 position DS1847-010 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

DS1847: Pin Assignment

DataSheet

Parametrics

Quality and Environmental Data

• DS1847.pdf

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• DS1848：Dual Temperature-Controlled NV Variable Resistor & Memory

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