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DS1620 Thermometer/Thermostat: Pinout, Datasheet and Applications

UTMEL

Published: 12 August 2021 | Last Updated: 17 April 2025

3577

DS1620

DS1620

Maxim Integrated

Tube Digital, Local 2.7V~5.5V Through Hole -55°C~125°C 3-Wire (CLK, DQ, RST) ±0.5°C (±2°C) 9 b 1 (Unlimited)

Purchase Guide

Tube Digital, Local 2.7V~5.5V Through Hole -55°C~125°C 3-Wire (CLK, DQ, RST) ±0.5°C (±2°C) 9 b 1 (Unlimited)

DS1620 is a digital thermometer and thermostat with 8 pins. This article enforces pinout, datasheet, applications, and other details about DS1620.

This video describes temperature sensing and thermostat control using the DS1620 controlled by Arduino Nano. The thermostat function is stand alone with no need for microcontroller control.

Temperature sensing and thermostat control / DS1620 and Arduino

DS1620 Pinout

DS1620 PINOUT.jpg

ds1620 pin description.png

DS1620 Description

The DS1620 Digital Thermometer and Thermostat provide 9–bit temperature readings that indicate the temperature of the device. With three thermal alarm outputs, the DS1620 can also act as a thermostat. THIGH is driven high if the DS1620’s temperature is greater than or equal to a user-defined temperature TH. TLOW is driven high if the DS1620’s temperature is less than or equal to a user-defined temperature TL. TCOM is driven high when the temperature exceeds TH and stays high until the temperature falls below that of TL.


DS1620 CAD Model

Symbol

DS1620 symbol.png

Footprint

DS1620 footprint.png

3D Model

DS1620 3D MODEL.jpg

Specifications

Maxim Integrated DS1620 technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated DS1620 .
  • Type
    Parameter
  • Factory Lead Time
    6 Weeks
  • 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.

    Through Hole
  • Package / Case

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

    8-DIP (0.300, 7.62mm)
  • Surface Mount

    having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.

    YES
  • Mounting Feature

    a process by which the operating system makes files and directories on a storage device (such as hard drive, CD-ROM, or network share) available for users to access via the computer's file system.

    SURFACE MOUNT
  • Number of Pins
    8
  • Test Conditions
    0°C ~ 70°C (-55°C ~ 125°C)
  • 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.

    -55°C~125°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.

    Tube
  • Published
    2005
  • 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
  • Terminal Finish

    Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.

    Matte Tin (Sn)
  • Additional Feature

    Any Feature, including a modified Existing Feature, that is not an Existing Feature.

    COMPLIANCE TO MIL-300
  • Voltage - Supply

    Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.

    2.7V~5.5V
  • 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.

    DS1620
  • Body Length or Diameter

    Body length or diameter in electronic components refers to the physical dimensions of a component's housing, typically measured in millimeters or inches. It indicates the size of the component that affects its fit within a circuit board or system. This parameter is crucial for ensuring compatibility with the design and mounting of electronic devices. It can impact heat dissipation, electrical performance, and overall assembly efficiency. Accurate measurement of body length or diameter is essential for proper component selection and placement in electronic applications.

    13.97mm
  • Body Breadth

    Body breadth in electronic components refers to the width of the physical body of a component, such as a resistor, capacitor, or integrated circuit. This measurement is crucial for ensuring proper fit within a circuit board or enclosure. It can affect the component's thermal performance, mechanical stability, and overall compatibility with other components in a design. Body breadth is typically specified in millimeters or inches and is an important factor in the selection and design of electronic assemblies.

    7.62 mm
  • Output Voltage

    Output voltage is a crucial parameter in electronic components that refers to the voltage level produced by the component as a result of its operation. It represents the electrical potential difference between the output terminal of the component and a reference point, typically ground. The output voltage is a key factor in determining the performance and functionality of the component, as it dictates the level of voltage that will be delivered to the connected circuit or load. It is often specified in datasheets and technical specifications to ensure compatibility and proper functioning within a given system.

    2.4V
  • 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.

    3-Wire (CLK, DQ, RST)
  • Power Supplies

    an electronic circuit that converts the voltage of an alternating current (AC) into a direct current (DC) voltage.?

    3/5V
  • 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.

    Logic
  • Termination Type

    Termination Type in electronic components refers to the method used to connect the component to a circuit board or other electronic devices. It specifies how the component's leads or terminals are designed for soldering or mounting onto a PCB. Common termination types include through-hole, surface mount, and wire lead terminations. The termination type is an important consideration when selecting components for a circuit design, as it determines how the component will be physically connected within the circuit. Different termination types offer varying levels of durability, ease of assembly, and suitability for specific applications.

    SOLDER
  • Number of Bits
    9
  • 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.

    9 b
  • Sensor Type

    In electronic components, the parameter "Sensor Type" refers to the specific type of sensor technology used in a particular component to detect and measure physical phenomena such as light, temperature, pressure, motion, or proximity. Different sensor types utilize various principles and mechanisms to convert the detected input into an electrical signal that can be processed by the electronic component. Common sensor types include photodiodes, thermistors, accelerometers, and proximity sensors, each designed for specific applications and environments. Understanding the sensor type is crucial for selecting the right component for a given task and ensuring accurate and reliable sensing capabilities in electronic systems.

    Digital, Local
  • Sensors/Transducers Type

    In electronic components, the parameter "Sensors/Transducers Type" refers to the specific type of sensor or transducer that is integrated into the component. Sensors are devices that detect changes in physical properties and convert them into electrical signals, while transducers are devices that convert one form of energy into another. The type of sensor or transducer used in an electronic component can vary widely depending on the intended application, such as temperature sensors, pressure sensors, proximity sensors, accelerometers, and more. Understanding the Sensors/Transducers Type parameter is crucial for selecting the right component for a particular electronic system or device, as different types of sensors/transducers have different functionalities and performance characteristics.

    TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL
  • Housing

    Housing in electronic components refers to the physical enclosure that protects the internal circuitry and components from environmental factors such as dust, moisture, and mechanical damage. It provides structural support and electrical insulation while facilitating heat dissipation. The design and materials used for housing are crucial for the reliability and performance of the electronic device, as they impact factors like thermal management, electromagnetic interference, and overall aesthetics.

    PLASTIC
  • Accuracy - Highest (Lowest)

    In electronic components, "Accuracy - Highest (Lowest)" refers to the range within which the actual value of a parameter can deviate from the ideal or specified value. The term "Highest" indicates the upper limit of this range, while "Lowest" indicates the lower limit. For example, if a component has an accuracy of ±5%, the highest accuracy would mean that the actual value could be within 5% above the specified value, while the lowest accuracy would mean it could be within 5% below the specified value. This parameter is crucial for ensuring the reliability and performance of electronic devices by determining how closely the component's output matches the desired value.

    ±0.5°C (±2°C)
  • Sensing Temperature - Local

    Sensing Temperature - Local refers to the capability of an electronic component to measure the temperature in its immediate environment or vicinity. This parameter is crucial for applications that require monitoring of temperature for performance, safety, or stability purposes. It often involves temperature sensors integrated within components like microcontrollers, power regulators, or other integrated circuits. The local sensing allows for accurate temperature readings that help in adjusting operational conditions, ensuring optimal performance, and preventing thermal-related failures.

    -55°C~125°C
  • Features

    In the context of electronic components, the term "Features" typically refers to the specific characteristics or functionalities that a particular component offers. These features can vary depending on the type of component and its intended use. For example, a microcontroller may have features such as built-in memory, analog-to-digital converters, and communication interfaces like UART or SPI.When evaluating electronic components, understanding their features is crucial in determining whether they meet the requirements of a particular project or application. Engineers and designers often look at features such as operating voltage, speed, power consumption, and communication protocols to ensure compatibility and optimal performance.In summary, the "Features" parameter in electronic components describes the unique attributes and capabilities that differentiate one component from another, helping users make informed decisions when selecting components for their electronic designs.

    One-Shot, Output Switch
  • 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
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DS1620 Functional Block Diagram

DS1620 functional block diagram.png

DS1620 Benefits and Features

  • Simply Adds Temperature Monitoring and Control to Any System

  1. Measures Temperatures From -55°C to +125°C in 0.5°C Increments; Fahrenheit Equivalent is -67°F to +257°F in 0.9°F Increments

  2. Temperature is Read as a 9-Bit Value

  3. Converts Temperature to Digital Word in 750ms (max)

  4. Thermostatic Settings are User-Definable and Nonvolatile

  • Can Be Used in a Wide Variety of Applications

  1. Supply Voltage Range Covers From 2.7V to 5.5V

  2. Data is Read From/Written Via a 3-Wire Serial Interface (CLK, DQ, RST )

  • Saves Space

  1. Requires No External Components

  • 8-Pin DIP or SOIC (208-mil) Packages

 


How does DS1620 work?

The DS1620 measures temperature using a bandgap-based temperature sensor. The temperature reading is provided in a 9–bit, two's complement reading by issuing a READ TEMPERATURE command. The data is transmitted serially through the 3–wire serial interface, LSB first.


DS1620 Applications

  • Thermostatic Controls

  • Industrial Systems

  • Consumer Products

  • Thermometers


DS1620 Manufacturer

The market is evolving. The rules are changing. To keep your time to market short, you need integration at every level—from silicon to the supply chain. Count on Maxim Integrated to help you overcome design and architectural challenges, with integrated solutions for the industrial, medical, consumer, automotive, energy, computing, and communications realms. Maxim Integrated is also your source for power, interface, and even digital products that work in the analog world. And they’re glad to support you with reference designs, tools, technical documents, packaging, and more. We invite you to explore their latest analog integration offerings.


Trend Analysis

Frequently Asked Questions

What is DS1620?

The DS1620 is a complete digital thermometer on a chip, capable of replacing the normal combination of temperature sensor and analog-to-digital converter in most applications. It can measure temperature in units of 0.5° Centigrade (C) from –55° C to +125° C.

What can be DS1620 used for?

The DS1620 has three thermal alarms that trigger the output pins THigh, TLow, and TCOM. These pins can be used to control closed-loop heating and cooling systems by activating and deactivating a system dependent on the defined temperature boundaries. The THigh pin is set to 1 when the temperature exceeds the TH value.

How does DS1620 work?

The DS1620 measures temperature using a bandgap-based temperature sensor. The temperature reading is provided in a 9–bit, two's complement reading by issuing a READ TEMPERATURE command. The data is transmitted serially through the 3–wire serial interface, LSB first.
DS1620

Maxim Integrated

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