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Part Number: DS1847
Description: The DS1847 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two256- position linear, variabl...
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DS1847
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General Description
DS1847 General Description
The DS1847 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two256- position linear, variable resistors. The DS1847-050 consists of one 10kand one 50k, while the DS1847-010 consists of two 10k 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.
DS1847 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.
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.
DS1847 Features
Two linear taper, temperature-controlled variable resistors
DS1847-050
One 50k, 256 position
One 10k, 256 position
DS1847-010
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
DS1847-050
One 50k, 256 position
One 10k, 256 position
DS1847-010
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
DS1847 Connection Diagram
DS1847
PDF/DataSheet Download
- Datasheet: DS1847
- File Size: 105084 KB
- Manufacturer: Dallas
- Click here to Download
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