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Maxim > Products > [Temperature Sensors] 
MAX6676, MAX6677
Low-Voltage, 1.8kHz PWM Output Temperature Sensors

Industry's Lowest Voltage PWM Output Temperature Sensor in Tiny SOT23 Package


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Data Sheet
FULL DATA SHEET (PDF, 176kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX6676/MAX6677 are high-accuracy, low-power temperature sensors with a single-wire output. The MAX6676/MAX6677 convert the ambient temperature into a ratiometric PWM output with temperature information contained in the duty cycle of the output square wave. The MAX6676 has an open-drain output and the MAX6677 has a push-pull output.

The MAX6676/MAX6677 are specified for operation with power-supply voltages from 1.8V to 3.6V, or from 3.6V to 5.5V (MAX6676 only). The typical unloaded supply current is 80µA. All devices feature a single-wire output that minimizes the number of pins necessary to interface with a microprocessor (µP). The output is a square wave with a nominal frequency of 1.8kHz (±20%) at +25°C. The output format is decoded as follows:
Temperature (°C) = 398.15 x (t1 / t2) - 273.15
Where t1 is fixed with a typical value of 0.24ms and t2 is modulated by the temperature. The MAX6676/ MAX6677 operate from -40°C to +125°C and are available in space-saving 6-pin SOT23 packages.

Key Features   Applications/Uses
  • Simple Single-Wire, 1.8kHz PWM Output
  • Operates Down to 1.8V
  • High Accuracy
    • ±1.5°C at TA= +25°C
    • ±3.0°C at TA = 0°C to +85°C
  • Operates from -40°C to +125°C
  • Low 80µA Typical Current Consumption
  • Small 6-Pin SOT23 Package

 
  		• µP and µC Temperature Monitoring
  		• Automotive
  		• HVAC and Environmental Control
  		• Industrial
  		• Isolated Temperature Sensing
  		• Portable Devices
  		• Process Control

    Key Specifications:   Temperature Sensors
    Part Number Sensor Type Interface Accuracy (±°C) Parasite Power Operating Temp. Range (°C) Smallest Available Package (max w/pins) (mm2) Price**
    MAX6676  Local PWM 1.5 No -40 to +125 9 $2.75 @ 1k
    MAX6677   
    See All Temperature Sensors (99)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Evaluation Kits
    none

    Design Guides
  		• Temp Sensors (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-13 of 13

    MAX6676 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6676AUT5+  


    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6676AUT+T  


    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6676AUT3+  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6676AUT3+T  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6676AUT5+T  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6+1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6676AUT3    
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6676AUT5  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6676AUT3-T  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6676AUT5-T  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C See data sheet
    Materials Analysis
    MAX6677 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6677AUT3+  


    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6677AUT3+T  


    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6677AUT3    
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6677AUT3-T  
    		SOT;6 pin;9 mm²
    Outline Drawing: 21-0058 (PDF)
    Land Pattern: 90-0175 (PDF)
    Use pkgcode/variation: U6-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis

    More Information
  		• Topmark Coding: MAX6676 MAX6677
  		• New Product Press Release 2002-11-25 
  		• Temperature Family by Product Type

    Related Products
    MAX6666, MAX6667 High-Accuracy PWM Output Temperature Sensors
    MAX6672, MAX6673 PWM Output Temperature Sensors in SC70 Packages

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    Document Ref.: 19-2660; Rev 1; 2003-02-25
    This page last modified: 2007-08-01


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