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

See parametric specs for Fiber Monitoring and Control (19)


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
$2.97 @1k

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

Tools & Models

  • DS1859 IBIS Model
  • Product Reliability Reports: DS1859.pdf 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    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:
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    Related Resources

    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