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DS1721U+ - Analog Devices

Description: Maxim DS1721U+ Temperature Sensor 8-Pin μSOP, -55 → +125 °C

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DS1721U+ - Analog Devices - PCB symbol
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PCB Footprints
DS1721U+ - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - 8-pin uSOP
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3D Models
DS1721U+ - Analog Devices - 3D model - Small Outline Packages - 8-pin uSOP
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DS1721U+ Details

  • Manufacturer Part Number:

    DS1721U+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    8-MINI_SO-N/A

  • Package Description:

    LEAD FREE, USOP-8

  • Pin Count:

    8

  • Manufacturer Package Code:

    8-MINI_SO-N/A

  • Country Of Origin:

    Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA

  • Date Of Intro:

    1999-11-19

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Accuracy-Max (Cel):

    1 Cel

  • Body Breadth:

    3 mm

  • Body Height:

    1.1 mm

  • Body Length or Diameter:

    3 mm

  • Housing:

    PLASTIC

  • JESD-609 Code:

    e3

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Bits:

    12

  • Number of Terminals:

    8

  • Operating Current-Max:

    1.25 mA

  • Operating Temperature-Max:

    125 °C

  • Operating Temperature-Min:

    -55 °C

  • Output Interface Type:

    2-WIRE INTERFACE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Equivalence Code:

    TSSOP8,.19

  • Package Shape/Style:

    SQUARE

  • Sensors/Transducers Type:

    TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    2.7 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Termination Type:

    SOLDER

DS1721U+ Frequently Asked Questions (FAQs)

  • The recommended layout and routing for the DS1721U+ involves keeping the device away from high-frequency noise sources, using a solid ground plane, and minimizing the length of the traces connected to the VBAT and GND pins. Additionally, it's recommended to use a 0.1uF decoupling capacitor between VCC and GND, and to keep the crystal oscillator traces as short and symmetrical as possible.
  • To ensure accurate temperature measurements with the DS1721U+, it's essential to follow proper thermal design practices, such as placing the device in close proximity to the temperature source, using a thermally conductive material to attach the device to the temperature source, and minimizing thermal gradients. Additionally, calibrating the device and using the built-in temperature correction features can also improve accuracy.
  • The maximum allowed voltage on the VBAT pin of the DS1721U+ is 3.7V. Exceeding this voltage can cause permanent damage to the device. It's recommended to use a voltage regulator or a battery with a maximum voltage of 3.7V to ensure safe operation.
  • The DS1721U+ has a built-in battery-low detection feature that can be enabled by connecting the VBAT pin to a resistor divider network. The device will then monitor the voltage on the VBAT pin and generate an interrupt when the voltage falls below a programmable threshold. The application note AN392 from Analog Devices provides a detailed example of how to implement a battery-low detection circuit with the DS1721U+.
  • The typical current consumption of the DS1721U+ varies depending on the operating mode and frequency. In active mode, the typical current consumption is around 1.5mA at 3.3V and 1MHz. In sleep mode, the typical current consumption is around 10uA. The datasheet provides more detailed information on the current consumption of the device in different operating modes.

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DS1721U+ Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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