The DS1854 dual temperature-controlled nonvolatile (NV) variable resistors with two monitors consists of two 50kΩ 256-position linear variable resistors, two analog monitor inputs (MON1, MON2), 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. Applications * Diagnostic Monitoring * Instrumentation and Industrial Controls * Optical Transceivers * Optical Transponders * RF Power Amps * Four Total Monitored Channels (Temperature, VCC, MON1, MON2) * Two External Analog Inputs (MON1, MON2) * Internal Direct-to-Digital Temperature Sensor * 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 * Two Buffers with TTL/CMOS-Compatible Inputs and Open-Drain Outputs * Operates from a 3.3V or 5V Supply * SFF-8472 Compatible