DS1856
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DS1856

Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection

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warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $4.10
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 Linear, 256-Position, Nonvolatile Temperature-Controlled Variable Resistors
  • Resistor Settings Changeable Every 2°C
  • 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
Additional Details
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The DS1856 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.

Relative to other members of the family, the DS1856 is essentially a DS1859 with a DS1852-friendly memory map. In particular, the DS1856 can be configured so the 128 bytes of internal Auxiliary EEPROM memory is mapped into Main Device Table 00h and Table 01h, maintaining compatibility between both the DS1858/DS1859 and the DS1852. The DS1856 also features password protection equivalent to the DS1852, further enhancing compatibility between the two.

Applications

  • Diagnostic Monitoring
  • Instrumentation and Industrial Controls
  • Optical Transceivers
  • Optical Transponders
  • RF Power Amps
Part Models 6
1ku List Price Starting From $4.10

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS1856B-050+
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DS1856B-050+T&R
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DS1856E-020+
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DS1856E-020+T&R
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DS1856E-050+
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DS1856E-050+T&R
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Filter by Model

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Part Models

Product Lifecycle

PCN

Dec 11, 2018

- 1754N

ASSEMBLY

DS1856E-020+

PRODUCTION

DS1856E-020+T&R

PRODUCTION

DS1856E-050+

PRODUCTION

DS1856E-050+T&R

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Dec 11, 2018

- 1754N

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ASSEMBLY

DS1856E-020+

PRODUCTION

DS1856E-020+T&R

PRODUCTION

DS1856E-050+

PRODUCTION

DS1856E-050+T&R

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 5

reference details image

DS1854EVKIT

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

zoom

DS1854EVKIT

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

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

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 Detail

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
reference details image

DS1859EVKIT

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

zoom

DS1859EVKIT

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

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

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 Detail

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
reference details image

DS185XEVKIT

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

zoom

DS185XEVKIT

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

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

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 Detail

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
reference details image

DS1858EVKIT

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

zoom

DS1858EVKIT

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

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

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 Detail

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
reference details image

DS1857EVKIT

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

zoom

DS1857EVKIT

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

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

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 Detail

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
Tools & Simulations

Tools & Simulations 1

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