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DS1859：Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors

New 20kΩ Option for Popular DS1859 SFP Optical Control/Monitor Provides Higher Control Resolution

The DS1859 dual, temperature-controlled, nonvolatile (NV) variable resistors with three monitors consists of two 50kΩ or two 20kΩ, 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.

Key Features SFF-8472 Compatible Five Monitored Channels (Temperature, VCC, MON1, MON2, MON3) Three External Analog Inputs (MON1, MON2, MON3) That Support Internal and External Calibration Scalable Dynamic Range for External Analog Inputs Internal Direct-to-Digital Temperature Sensor Alarm and Warning Flags for All Monitored Channels Two 50kΩ or Two 20kΩ, 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 Operating Temperature Range of -40°C to +95°C

DS1859: Typical Operating Circuit Applications/Uses Diagnostic Monitoring Instrumentation and Industrial Controls Optical Transceivers Optical Transponders RF Power Amps

DataSheet

Parametrics

Design kits & evaluation modules

• DS1854EVKIT
• DS1857EVKIT
• DS1858EVKIT
• DS1859EVKIT
• DS185XEVKIT

Quality and Environmental Data

• DS1859.pdf

Related Products

• DS1858：Dual Temperature-Controlled Resistors with Three Monitors
• DS1847：Dual Temperature-Controlled NV Variable Resistor
• DS1848：Dual Temperature-Controlled NV Variable Resistor & Memory
• DS1852：Optical Transceiver Diagnostic Monitor
• DS1855：Dual Nonvolatile Digital Potentiometer and Secure Memory
• DS1845：Dual NV Potentiometer and Memory

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