DS7505

High-Precision Digital Thermometer and Thermostat

Improved LM75/DS75 Software-Compatible Temperature Sensor Is ±0.5°C Accurate and Has Nonvolatile Thermostat Thresholds


Please check latest availability status for a specific part variant.

Description

The DS7505 low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±0.5°C accuracy over a -0°C to +70°C range. A 9-bit resolution mode is software compatible with the LM75.

The DS7505 thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S. is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip points (TOS and THYST) that are stored in EEPROM registers.
DS7505: Block Diagram DS7505: Block Diagram Enlarge+

Key Features

  • Extends Performance Range with a Low-Voltage, 1.7V to 3.7V Operating Range
  • Maximizes System Accuracy in Broad Range of Thermal Management Applications
    • Measures Temperature from -55°C to +125°C (-67°F to +257°F)
    • ±0.5°C Accuracy Over a 0°C to +70°C Range
    • User-Configurable Resolution from 9 Bits (Default) to 12 Bits (0.5°C to 0.0625°C Resolution)
  • Reduces Cost with No External Components and Stand Alone Thermostat Capability
  • Increases Reliability and System Robustness
    • Internally Filtered Data Lines for Noise Immunity (50ns Deglitch)
    • Bus Timeout Feature Prevents Lockup on a 2-Wire Interface
  • Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability
    • Up to Eight Devices Can Operate on a 2-Wire Bus
  • Fast 25ms (max) 9-Bit Conversion Time
  • Flexible and Nonvolatile (NV) User-Defined Thermostatic Modes

Applications/Uses

  • Any Thermally Sensitive System
  • Cellular Base Stations
  • Medical Equipment
  • Networking Equipment
  • Office Equipment
Part NumberSensor TypeFunctionsInterfaceChannelsAccuracy
(±°C)
Parasite Pwr.Temp. Thresh.Temp. Resolution
(bits)
Multi DroppableOper. Temp.
(°C)
Package/PinsBudgetary
Price
See Notes
DS7505 LocalStandalone Thermostat2-Wire/I2C/SMBusOne0.5NoProgrammable (NV)
9
10
11
12
Yes-55 to +125
SOIC (N)/8
UMAX/8
$1.31 @1k
See All Temperature Sensors (111)
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.

Tools & Models

  • DS7505 IBIS Model
  • CAD Symbols and Footprints

  • DS7505S+
  • DS7505S+T&R
  • DS7505U+
  • DS7505U+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


    MAX30131
    1-, 2-, 4-Channel, Ultra-Low Power Electrochemical Sensor AFEs

    • Multichannel Operation
    • High Accuracy and Precision
    • Autonomous Modes with 256 Word Configurable FIFO and Programmable Alarm

    MAX30132
    1-, 2-, 4-Channel, Ultra-Low Power Electrochemical Sensor AFEs

    • Multichannel Operation
    • High Accuracy and Precision
    • Autonomous Modes with 256 Word Configurable FIFO and Programmable Alarm

    MAX30134
    1-, 2-, 4-Channel, Ultra-Low Power Electrochemical Sensor AFEs

    • Multichannel Operation
    • High Accuracy and Precision
    • Autonomous Modes with 256 Word Configurable FIFO and Programmable Alarm

    MAXM86161
    Single-Supply Integrated Optical Module for HR and SpO2 Measurement

    • Complete Single-Channel Optical Data Acquisition System
    • Built-In Algorithm Further Enhances Rejection of Fast Ambient Transients
    • Optimized Architecture for Reflective Heart Rate and SpO2 Monitoring

    MAX30208
    ±0.1°C Accurate, I2C Digital Temperature Sensor

    • High Accuracy and Precision
    • Low Power Consumption
    • Small Size


    Belle Isle 2020
    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

    RSVP