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  5. LTC1041

Data Sheet
PDF

Overview

Features and Benefits

  • Micropower 1.5µW (1 Sample/Second)
  • Wide Supply Range 2.8V to 16V
  • High Accuracy
    • Guaranteed SET POINT Error ±0.5mV Max
    • Guaranteed Deadband ±0.1% of Value Max
  • Wide Input Voltage Range V+ to Ground
  • TTL Outputs with 5V Supply
  • Two Independent Ground-Referred Control Inputs
  • Small Size 8-Pin SO

Product Details

The LTC1041 is a monolithic CMOS BANG-BANG controller manufactured using Linear Technology’s enhanced LTCMOS™ silicon gate process. BANG-BANG loops are characterized by turning the control element fully ON or fully OFF to regulate the average value of the parameter to be controlled. The SET POINT input determines the average control value and the DELTA input sets the deadband. The deadband is always 2 × DELTA and is centered around the SET POINT. Independent control of the SET POINT and deadband, with no interaction, is made possible by the unique sampling input structure of the LTC1041.

An external RC connected to the OSC pin sets the sampling rate. At the start of each sample, internal power to the analog section is switched on for ≈ 80µs. During this time, the analog inputs are sampled and compared. After the comparison is complete, power is switched off. This achieves extremely low average power consumption at low sampling rates. CMOS logic holds the output continuously while consuming virtually no power.

To keep system power at an absolute minimum, a switched power output (VP-P) is provided. External loads, such as bridge networks and resistive dividers, can be driven by this switched output.

The output logic sense (i.e., ON = V+) can be reversed (i.e., ON = GND) by interchanging the VIN and SET POINT inputs. This has no other effect on the operation of the LTC1041.

Applications

  • Temperature Control (Thermostats)
  • Motor Speed Control
  • Battery Charger
  • Any ON-OFF Control Loop

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Documentation & Resources

  • View All (3)
  • Data Sheets (1)
  • Reliability Data (1)
  • Application Notes (1)
    • Document Type

    Tools & Simulations

    LTspice

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    LTC1041

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC1041CN8#PBF Material Declaration Reliability Data 8-Lead PDIP (Narrow 0.3 Inch)
    LTC1041CS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC1041CS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    Wafer Fabrication Data R102 Reliability Data

    PCN-PDN Information

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    Select Model for PCN Information
    • LTC1041CN8#PBF Production
    • LTC1041CS8#PBF Production
    • LTC1041CS8#TRPBF Production

    Support & Discussions

    LTC1041 Discussions

    RE: Temperature control for a small chamber
    All LTC1041 Discussions
    LTC1041 Contact ADI Technical Support »
    LTC1041 Ask your question »
    LTC1041 Contact ADI Technical Support » LTC1041 Ask your question »

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