MAXIM DS1858B-050+

The DS1858 dual temperature-controlled nonvolatile (NV) variable resistors with three monitors consists of two 50kΩ 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.

• Five Total Monitored Channels (Temperature, VCC, MON1, MON2, MON3)
• Three External Analog Inputs (MON1, MON2, MON3)
• 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
• 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

• Optical Transceivers
• Optical Transponders
• Instrumentation and Industrial Controls
• RF Power Amps
• Diagnostic Monitoring