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General Description

The DS1856M dual, temperature-controlled, nonvolatile (NV) variable resistors with three monitors consists of two 256-position, linear, variable resistors; three analog monitor inputs (MON1, MON2, MON3); and 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

minimal circuitry. The variable resistor settings are stored in EEPROM memory and can be accessed over the 2-wire serial bus.

Features

?SFF-8472 Compatible

?13-Bit ADC

?Two Linear, 256-Position, Nonvolatile

Temperature-Controlled Variable Resistors with 2°C Resolution

?Three Levels of Security

?Access to Monitoring and ID Information Configurable with Separate Device Addresses

?2-Wire Serial Interface

?Two Buffers with TTL/CMOS-Compatible Inputs and Open-Drain Outputs

?Operates from a 3.3V or 5V Supply

?-40°C to +95°C Operating Temperature Range