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DS1857B-050+

  • Available: 7182

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  • Description
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Description

The DS1857 dual temperature-controlled nonvolatile (NV) variable resistors with external temperature input and monitors consists of two 50kΩ 256-position linear variable resistors, two analog monitor inputs (MON1, MON2), and an external temperature sensor input.
The device provides an ideal method for setting and temperature-compensating bias voltages and currents in control applications using minimal circuitry.
The variable resistor settings are stored in EEPROM memory and can be accessed over the 2-wire serial bus.
Features
♦ Four Total Monitored Channels (Temperature, VCC, MON1, MON2)
♦ Two External Analog Inputs (MON1, MON2)
♦ Interface to External Temperature Sensor (LM50)
♦ Two 50kΩ, Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors
♦ Resistor Settings Changeable Every 2°C
♦ Access to Monitoring and ID Information Configurable with Separate Device Addresses
♦ Resistor Disable (Open-Circuit) Function
♦ 2-Wire Serial Interface
♦ Three Address Lines for Multiple Devices
♦ Operates from a 3.3V or 5V Supply
♦ SFF-8472 CompatibleApplications Optical Transceivers Optical Transponders Instrumentation and Industrial Controls RF Power Amps Diagnostic Monitoring
Alternatives

Functional Equivalent (FE) materials, including Fused Filament Fabrication (FFF) form, assembly, and functionally compatible substitute materials.

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