DS1859

Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors

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


Please check latest availability status for a specific part variant.

Description

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.
DS1859: Typical Operating Circuit DS1859: Typical Operating Circuit Enlarge+

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

Applications/Uses

  • Diagnostic Monitoring
  • Instrumentation and Industrial Controls
  • Optical Transceivers
  • Optical Transponders
  • RF Power Amps
Part NumberADCsResolution
(bits)
DACs/ ResistorsFS Out
(kΩ)
StepsTemp. SensorMemoryVSUPPLY
(V)
Control InterfacePackage/PinsBudgetary
Price
See Notes
DS1859 5-Input Muxable122 Resistors
20kohms
50kohms
256InternalEEPROM
3.3
5
2-Wire
CSBGA/16
TSSOP/16
$2.83 @1k
See All Fiber Monitoring and Control (19)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


DS1854EVKIT: 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
DS1858EVKIT: Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
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

Technical Documents

Tutorial 5066 When Is Calibration Important?
App Note 4557 Digital Resistor Sets Operating Power for Laser Driver
App Note 4324 Variable Resistor and Temperature-Indexed Lookup Table (LUT) Compensate for Regulator Output
App Note 3953 Side-by-Side Comparison of Fiber-Monitoring and Control ICs
App Note 3923 Connecting Multiple DS1859 Devices on the Same I²C Bus
App Note 3766 HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules
App Note 3751 How to Program a Device Using the File Tab in the DS185XEVKIT
App Note 3742 MAX3735A: Special Considerations When Interfacing the MAX3735A to the DS1859
App Note 3481 Using the DS1859 with External EEPROM
App Note 3427 Interfacing the DS1859 Digitally Controlled Resistors to the MAX3735 Laser Driver
Reference Schematic 3376 HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion)
App Note 3317 Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software
App Note 3315 Writing Parallel-Port 2-Wire Software in C
App Note 3257 Using DS3902 in Low Cost Optical Modules
App Note 3252 How to Add an Offset to the DS1859 Temperature Reading
Tutorial 3230 How to Use a PC's Parallel Port to Communicate with 2-Wire Devices
App Note 3080 Accurate Power Control of the MAX3740A Laser Driver
App Note 2858 DS1859 Internal Calibration and Right Shifting (Scalable Dynamic Ranging)
Reference Schematic 2360 HFRD-05.0: Multi-Rate (1Gbps - 3.2Gbps) 850nm Small Form Factor Pluggable (SFP) Transceiver
Reference Schematic 2135 HFRD-04.0: 2.7Gbps, 1310nm Small Form Factor Pluggable (SFP) Transceiver

Quality and Environmental Data

Product Reliability Reports: DS1859.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Additional Resources

Evaluation Kit: DS185XEVKIT

Tools & Models

  • DS1859 IBIS Model
  • CAD Symbols and Footprints

  • DS1859B-020+
  • DS1859B-020+T&R
  • DS1859B-050+
  • DS1859B-050+T&R
  • DS1859B-050+T&R/B
  • DS1859E-020+
  • DS1859E-020+T&R
  • DS1859E-050+
  • DS1859E-050+T&R
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources

    Type ID PDF Title
    Tutorial 5066 When Is Calibration Important?
    App Note 4557 Digital Resistor Sets Operating Power for Laser Driver
    App Note 4324 Variable Resistor and Temperature-Indexed Lookup Table (LUT) Compensate for Regulator Output
    App Note 3953 Side-by-Side Comparison of Fiber-Monitoring and Control ICs
    App Note 3923 Connecting Multiple DS1859 Devices on the Same I²C Bus
    App Note 3766 HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules
    App Note 3751 How to Program a Device Using the File Tab in the DS185XEVKIT
    App Note 3742 MAX3735A: Special Considerations When Interfacing the MAX3735A to the DS1859
    App Note 3481 Using the DS1859 with External EEPROM
    App Note 3427 Interfacing the DS1859 Digitally Controlled Resistors to the MAX3735 Laser Driver
    Reference Schematic 3376 HFRD-15.3: High-Frequency SFP Host Board (Includes Integrated RS-232 to I²C Conversion)
    App Note 3317 Adding Windows NT/2000/XP Support to the AN3315 Parallel-Port 2-Wire Software
    App Note 3315 Writing Parallel-Port 2-Wire Software in C
    App Note 3257 Using DS3902 in Low Cost Optical Modules
    App Note 3252 How to Add an Offset to the DS1859 Temperature Reading
    Tutorial 3230 How to Use a PC's Parallel Port to Communicate with 2-Wire Devices
    App Note 3080 Accurate Power Control of the MAX3740A Laser Driver
    App Note 2858 DS1859 Internal Calibration and Right Shifting (Scalable Dynamic Ranging)
    Reference Schematic 2360 HFRD-05.0: Multi-Rate (1Gbps - 3.2Gbps) 850nm Small Form Factor Pluggable (SFP) Transceiver
    Reference Schematic 2135 HFRD-04.0: 2.7Gbps, 1310nm Small Form Factor Pluggable (SFP) Transceiver
    Type ID Title
    Evaluation Board4798DS1854EVKIT Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    Evaluation Board4798DS1858EVKIT Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    Evaluation Board4798DS1857EVKIT Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    Evaluation Board4798DS185XEVKIT Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit
    Evaluation Board4798DS1859EVKIT Evaluation Kit for the DS1854, DS1857, DS1858, and DS1859 Fiber Optic Monitor and Control Evaluation Kit