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MAX6675 Type-K Thermocouple Converter : Datasheet, Pinout, Comparison

Sophie

Published: 14 September 2021 | Last Updated: 14 September 2021

11868

MAX6675ISA T

MAX6675ISA T

Maxim Integrated

10 Weeks weeks 8-SOIC (0.154, 3.90mm Width) Tape & Reel (TR) Active Sensor & Detector Interface ICs Thermocouple to Digital Converter Surface Mount 1 (Unlimited) ROHS3 Compliant

Purchase Guide

10 Weeks weeks 8-SOIC (0.154, 3.90mm Width) Tape & Reel (TR) Active Sensor & Detector Interface ICs Thermocouple to Digital Converter Surface Mount 1 (Unlimited) ROHS3 Compliant

This article will unlock more details about MAX6675, a cold-junction-compensated k-thermocouple to-digital converter.

This is a video about MAX6675.

How to use MAX6675 thermocouple k type with Arduino

MAX6675 Pinout

max6675 Pinout.jpg

MAX6675 Pinout


PinPin NameFunction
1GNDGround
2T.Alumel Lead of Type-K   Thermocouple.Should be connected to the ground externally.
3T+Chrome Lead of TypeK Thermocouple
4VccPositive Supply. Bypass with a   0.1μF capacitor to GND.
5SCKSerial Clock Input
6CsChip Select Set CS low to enable the serial interface.
7SOSerial Data Output
8N.C.No Connection

Pin Description


MAX6675 CAD Model

Symbol

max6675 Symbol.jpg

Symbol

Footprint

max6675 Footprint.jpg

Footprint

3D Model

max6675 3D Model.jpg

3D Model


Specifications

Maxim Integrated MAX6675ISA T technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated MAX6675ISA T.
  • Type
    Parameter
  • Factory Lead Time
    10 Weeks
  • Contact Plating

    Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.

    Tin
  • Mount

    In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.

    Surface Mount
  • Mounting Type

    The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.

    Surface Mount
  • Package / Case

    refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.

    8-SOIC (0.154, 3.90mm Width)
  • Number of Pins
    8
  • Operating Temperature

    The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

    -20°C~85°C
  • Packaging

    Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

    Tape & Reel (TR)
  • Published
    2002
  • JESD-609 Code

    The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.

    e3
  • Pbfree Code

    The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.

    yes
  • Part Status

    Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

    Active
  • Moisture Sensitivity Level (MSL)

    Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures

    1 (Unlimited)
  • Number of Terminations
    8
  • ECCN Code

    An ECCN (Export Control Classification Number) is an alphanumeric code used by the U.S. Bureau of Industry and Security to identify and categorize electronic components and other dual-use items that may require an export license based on their technical characteristics and potential for military use.

    EAR99
  • Type
    Thermocouple to Digital Converter
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    DUAL
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    GULL WING
  • Peak Reflow Temperature (Cel)

    Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.

    260
  • Number of Functions
    1
  • Supply Voltage

    Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.

    3.3V
  • Terminal Pitch

    The center distance from one pole to the next.

    1.27mm
  • Base Part Number

    The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.

    MAX6675
  • Pin Count

    a count of all of the component leads (or pins)

    8
  • Output Type

    The "Output Type" parameter in electronic components refers to the type of signal or data that is produced by the component as an output. This parameter specifies the nature of the output signal, such as analog or digital, and can also include details about the voltage levels, current levels, frequency, and other characteristics of the output signal. Understanding the output type of a component is crucial for ensuring compatibility with other components in a circuit or system, as well as for determining how the output signal can be utilized or processed further. In summary, the output type parameter provides essential information about the nature of the signal that is generated by the electronic component as its output.

    Digital
  • Operating Supply Voltage

    The voltage level by which an electrical system is designated and to which certain operating characteristics of the system are related.

    5.5V
  • Supply Voltage-Min (Vsup)

    The parameter "Supply Voltage-Min (Vsup)" in electronic components refers to the minimum voltage level required for the component to operate within its specified performance range. This parameter indicates the lowest voltage that can be safely applied to the component without risking damage or malfunction. It is crucial to ensure that the supply voltage provided to the component meets or exceeds this minimum value to ensure proper functionality and reliability. Failure to adhere to the specified minimum supply voltage may result in erratic behavior, reduced performance, or even permanent damage to the component.

    3V
  • Interface

    In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.

    SPI, Serial
  • Operating Supply Current

    Operating Supply Current, also known as supply current or quiescent current, is a crucial parameter in electronic components that indicates the amount of current required for the device to operate under normal conditions. It represents the current drawn by the component from the power supply while it is functioning. This parameter is important for determining the power consumption of the component and is typically specified in datasheets to help designers calculate the overall power requirements of their circuits. Understanding the operating supply current is essential for ensuring proper functionality and efficiency of electronic systems.

    1.5mA
  • Nominal Supply Current

    Nominal current is the same as the rated current. It is the current drawn by the motor while delivering rated mechanical output at its shaft.

    700μA
  • Input Type

    Input type in electronic components refers to the classification of the signal or data that a component can accept for processing or conversion. It indicates whether the input is analog, digital, or a specific format such as TTL or CMOS. Understanding input type is crucial for ensuring compatibility between different electronic devices and circuits, as it determines how signals are interpreted and interacted with.

    Thermocouple (K)
  • Resolution

    Resolution in electronic components refers to the smallest increment of measurement or change that can be detected or represented by the component. It is a crucial specification in devices such as sensors, displays, and converters, as it determines the level of detail or accuracy that can be achieved. For example, in a digital camera, resolution refers to the number of pixels that make up an image, with higher resolution indicating a greater level of detail. In analog-to-digital converters, resolution is the number of discrete values that can be represented in the digital output, determining the precision of the conversion process. Overall, resolution plays a significant role in determining the performance and capabilities of electronic components in various applications.

    1.5 B
  • Height
    1.5mm
  • Length
    5mm
  • Width
    4mm
  • Radiation Hardening

    Radiation hardening is the process of making electronic components and circuits resistant to damage or malfunction caused by high levels of ionizing radiation, especially for environments in outer space (especially beyond the low Earth orbit), around nuclear reactors and particle accelerators, or during nuclear accidents or nuclear warfare.

    No
  • RoHS Status

    RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

    ROHS3 Compliant
  • Lead Free

    Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.

    Lead Free
0 Similar Products Remaining

Parts with Similar Specs

The three parts on the right have similar specifications to Maxim Integrated & MAX6675ISA T.

MAX6675 Description

The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1024°C, and exhibits thermocouple accuracy of 8LSBs for temperatures ranging from 0°C to +700°C.

The MAX6675 is a sophisticated thermocouple-to-digital converter with a built-in 12-bit analog-to-digital converter (ADC). The MAX6675 also contains cold-junction compensation sensing and correction, a digital controller, an SPI-compatible interface, and associated control logic.


MAX6675 Features

● Direct Digital Conversion of Type -K Thermocouple Output

● Cold-Junction Compensation

● Simple SPI-Compatible Serial Interface

● 12-Bit, 0.25°C Resolution

● Open Thermocouple Detection


MAX6675 Application

● Industrial

● Appliances

● HVAC


MAX6675 Block Diagram

max6675 Block Diagram.jpg

MAX6675 Block Diagram


MAX6675 Typical Application Circuit

The Typical Application Circuit shows the MAX6675 interfaced with a microcontroller. In this example, the MAX6675 processes the reading from the thermocouple and transmits the data through a serial interface. Force CS low and apply a clock signal at SCK to read the results at SO. Forcing CS low immediately stops any conversion process. Initiate a new conversion process by forcing CS high.

max6675 Typical Application Circuit.jpg

MAX6675 Typical Application Circuit



MAX6675 vs. MAX31855

PartsMAX6675MAX31855
Pb-free Code No Yes
Rohs   Code No Yes
Part   Life Cycle CodeObsoleteActive
Ihs   ManufacturerMAXIM INTEGRATED PRODUCTS INCMAXIM INTEGRATED PRODUCTS INC
Part   Package CodeSOICSOIC
Package   DescriptionSOP,SOP, SOP8,.25
Pin   Count88
Reach   Compliance Codenot_compliantcompliant
ECCN   CodeEAR99EAR99
HTS   Code8542.39.00.018542.39.00.01
Factory   Lead Time1 Week7 Weeks
Samacsys   DescriptionIC THERMOCOUPLE TO DGTL 8-SONICMAX31855KASA+, 14-bit Temperature Sensor   ±2 °C SPI 3 → 3.6 V 8-Pin SOIC
Samacsys   ManufacturerMaxim IntegratedMaxim Integrated
Analog   IC - Other TypeANALOG CIRCUITANALOG CIRCUIT
JESD-30   CodeR-PDSO-G8R-PDSO-G8
JESD-609   Codee0e3
Length4.9 mm4.9 mm
Moisture   Sensitivity Level11
Number   of Functions11
Number   of Terminals88
Operating   Temperature-Max85 °C125 °C
Operating   Temperature-Min-20 °C-40 °C
Package   Body MaterialPLASTIC/EPOXYPLASTIC/EPOXY
Package   CodeSOPSOP
Package   ShapeRECTANGULARRECTANGULAR
Package   StyleSMALL OUTLINESMALL OUTLINE
Peak   Reflow Temperature (Cel)245NOT SPECIFIED
Qualification   StatusNot QualifiedNot Qualified
Seated   Height-Max1.75 mm1.75 mm
Supply   Voltage-Max (Vsup)5.5 V3.6 V
Supply   Voltage-Min (Vsup)3 V3 V
Supply   Voltage-Nom (Vsup)3.3 V3.3 V
Surface   MountYESYES
TechnologyBICMOS
Temperature   GradeOTHERAUTOMOTIVE
Terminal   FinishTin/Lead (Sn/Pb)Matte Tin (Sn)
Terminal   FormGULLWINGGULLWING
Terminal   Pitch1.27 mm1.27 mm
Terminal   PositionDUALDUAL
Time@Peak   Reflow Temperature-Max (s)NOT SPECIFIEDNOT SPECIFIED
Width3.9 mm3.9 mm
Base   Number Matches42
Package   Equivalence Code
SOP8,.25
Power   Supplies
3.3 V
Supply   Current-Max (Isup)
1.5 mA

MAX6675 vs. MAX31855


MAX6675 Manufacturer

Maxim Integrated Products, Inc. designs, develops, manufactures, and markets linear and mixed-signal integrated circuits. The Company offers switching regulators, battery management, amplifiers, data converters, filters, opticals, and memory products.


Datasheet PDF

Download datasheets and manufacturer documentation for Maxim Integrated MAX6675ISA T.

Trend Analysis

Frequently Asked Questions

What difference is between MAX6675 and MAX31855?

The MAX6675 outputs 12 bits of data. The MAX31855 outputs 14 bits. That would indicate that the MAX31855 is more accurate. However, it has a wider range -250 to +1600 rather than 0 to 1024. So it has about 1 bit more resolution in practice. "1 bit" means it can see changes half the size of what the other can detect.

What is the max6675 designed to?

The MAX6675 is designed to work in conjunction with an external microcontroller (µC) or other intelligence in thermostatic, process-control, or monitoring applications.

How does the MAX6675 perform?

The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI™-compatible, read-only format.

What package is the MAX6675 available in?

The MAX6675 is available in a small, 8-pin SO package.
MAX6675ISA T

Maxim Integrated

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