DS1857

Dual Temperature-Controlled Resistors with External Temperature Input and Monitors

Data Sheet (Rev. 2)
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  • Documentation
  • Hardware Ecosystem
  • Evaluation Kits
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    Part Details

    • 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 Compatible
    DS1857
    Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
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    Documentation

    Data Sheet 1

    Reliability Data 1

    Technical Articles 5

    Learn More

    Hardware Ecosystem

    Parts Product Life Cycle Description
    Digital Potentiometers (DigiPOT) 3
    DS1845
    		NOT RECOMMENDED FOR NEW DESIGNS Dual NV Potentiometer and Memory
    DS1847
    		NOT RECOMMENDED FOR NEW DESIGNS Dual Temperature-Controlled NV Variable Resistor
    DS1855
    		NOT RECOMMENDED FOR NEW DESIGNS Dual Nonvolatile Digital Potentiometer and Secure Memory
    Precision Resistor Network 1
    DS1848
    		NOT RECOMMENDED FOR NEW DESIGNS Dual Temperature-Controlled NV Variable Resistor & Memory
    Product 1
    DS1852
    		Optical Transceiver Diagnostic Monitor
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    Evaluation Kits

    eval board
    schematic 1
    DS1859EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

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

    eval board
    schematic 2
    DS185XEVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

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

    eval board
    schematic 3
    DS1858EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

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

    eval board
    schematic 4
    DS1857EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

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

    eval board
    schematic 5
    DS1854EVKIT

    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Buy Now View Details

    Features and Benefits

    • Supports DS1854, DS1857, DS1858, and DS1859
    • Windows Software Allows Easy Access to Device Functionality and Handles 2-Wire Communication
    • ZIF Socket Allows All Four Device Types to be Evaluated from a Single Board
    • Software Allows User to Program Variable Resistors from a Text File
    • Real-Time Monitoring Software Continuously Monitors Temperature, VCC, Monitor Inputs, and Status Bytes
    • External Temperature Sensor Footprint for Evaluating the DS1857
    • EV Kit's Software can be Used to Configure or Monitor the Device in a Customer's Application Circuit

    Product Details

    The fiber optic monitor and control evaluation kit (EV kit) provides a hardware and software interface for evaluating the DS1854, DS1857, DS1858, and DS1859. The kit includes Microsoft Windows®-compatible software that performs the 2-wire functions required to change the device settings and monitor the device registers. In addition to the general communications functions provided by the software, it allows the resistors' temperature-addressed look-up tables to be programmed from a text file. The kit hardware includes test points that allow inputs to be connected to the external stimuli and outputs to be monitored by test equipment; jumpers can be used to configure the device for the customer's application.

    Applications

    • Diagnostic Monitoring
    • Instrumentation and Industrial Controls
    • Optical Transceivers
    • Optical Transponders
    • RF Power Amps
    DS1859EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS185XEVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1858EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1857EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    DS1854EVKIT
    Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit

    Latest Discussions

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