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DS1621 Thermometer:Pinout,Application,Circuits,Datasheet[with examples]

Author: Irene
Date: 14 Sep 2021
 45
Circuits

The DS1621 measures temperature using a bandgap-based temperature sensor

Catalog

Product Description

CAD Model

Pinout

Benefits and Features

Applications

Specifications

Product Compliance

DS1621 Circuit Examples

DS1621 Datasheet

Maxim Integrated

FAQ

 

Product Description

  1. Temperature measurements require no external components
  2. Measures temperatures from -55°C to +125°C in 0.5°C increments.
  3. Fahrenheit equivalent is -67°F to 257°F in 0.9°F increments
  4. Temperature is read as a 9-bit value (2-byte transfer)
  5. Wide power supply range (2.7V to 5.5V)Converts temperature to digital word in less than 1 second     

   

CAD Model

 

DS1621 CAD Model

DS1621 CAD Model

 

Pinout

Pinout

Pinout

 

Benefits and Features

  • Simply Adds Temperature Monitoring and Control to Any System
  •  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
  •  Temperature is Read as a 9-Bit Value (2-Byte Transfer)
  • Converts Temperature to Digital Word in Less than 1s
  • Thermostatic Settings are User Definable And Nonvolatile
  • Can Be Used in a Wide Variety of Applications
  • Power Supply Range (2.7V to 5.5V)
  •  Data is Read From/Written Via a 2-Wire
  • Serial Interface (Open Drain I/O Lines)
  • Saves Space
  •  Temperature Measurements Require No
  • External Components
  • o 8-pin DIP or SO package (208-mil) Packages

 

Applications

  • Thermostatic Controls
  • Industrial Systems
  • Consumer Products
  • Thermometers

 

 

Specifications

Product Attribute Attribute Value
Manufacturer: Maxim Integrated
Product Category: Board Mount Temperature Sensors
RoHS:  Details
Output Type: Digital
Configuration: Local
Accuracy: +/- 2 C
Supply Voltage - Min: 2.7 V
Supply Voltage - Max: 5.5 V
Interface Type: 2-Wire, I2C, SMBus
Resolution: 12 bit
Minimum Operating Temperature: - 55 C
Maximum Operating Temperature: + 125 C
Shutdown: No Shutdown
Mounting Style: Through Hole
Package / Case: DIP-8
Packaging: Tube
Product: Thermometers and Thermostats
Series: DS1621
Brand: Maxim Integrated
Temperature Threshold: Programmable
Operating Supply Current: 1 mA
Product Type: Temperature Sensors
Factory Pack Quantity: 50
Subcategory: Sensors
Part # Aliases: DS1621 90-16210+000
Unit Weight: 0.017284 oz

 

 

Product Compliance

USHTS: 8542390001
CAHTS: 8542390000
CNHTS: 8542319090
JPHTS: 8542390990
MXHTS: 85423999
TARIC: 8542399000
ECCN: EAR99

 

 

DS1621 Circuit Examples

PIC16F84 and DS1621 temprature control circuit:

 

Temprature controller schematic

 

 

Interfacing Arduino with DS1621 temperature sensor circuit: Project circuit diagram is shown below.

The 1602 LCD screen (2 rows and 16 columns) is used to display temperature values in degrees Celsius and degrees Fahrenheit where:

  • RS —> Arduino digital pin 2
  • E   —> Arduino digital pin 3
  • D4 —> Arduino digital pin 4
  • D5 —> Arduino digital pin 5
  • D6 —> Arduino digital pin 6
  • D7 —> Arduino digital pin 7
  • VSS, RW, D0, D1, D2, D3 and K are connected to Arduino GND,
  • VEE to the 10k ohm variable resistor (or potentiometer) output,
  • VDD to Arduino 5V and A to Arduino 5V through 330 ohm resistor.
  • VEE pin is used to control the contrast of the LCD. A (anode) and K (cathode) are the back light LED pins.

 

Interfacing Arduino with DS1621 temperature sensor circuit

 

The DS1621 sensor SDA (serial data) and SCL (serial clock) pins are respectively connected to Arduino A4 and A5 pins (ATmega328P hardware I2C module pins). It is is supplied with 5V from the Arduino board.

The three pins: A0, A1 and A2 are slave address select pins which are connected to ground, therefore the DS1621 takes an address of 0x48 (1001+A2+A1+A0).

 

 

DS1621 Datasheet

DS1621 Datasheet

 

Maxim Integrated

Maxim Integrated provides ease of design, and speeds time to market, through analog integration. The company's analog ICs offer extra features and functionality carefully designed to streamline circuit and simplify design. Look to Maxim for solutions for consumer electronics, personal computers and peripherals, mobile devices, wireless and fiber communications, test equipment, instrumentation, video displays, and automotive applications. Maxim’s analog and mixed-signal solutions include data converters, interface circuits, power, RF wireless circuits, clocks and oscillators, microcontrollers (MCUs), operational amplifiers (op amps), and sensors.

 

FAQ

What is DS1621?

The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, TOUT, is active when the temperature of the device exceeds a user-defined temperature TH.

Are temperature sensors interchangeable?

The three main types of temperature sensors are RTD, Thermocouple, and Thermistor. Most Oven Industries temperature sensors are interchangeable within the specific temperature range for which they are designed – meaning in the event one is damaged, it can be swapped out with no need to recalibrate the thermal system.

How do you trick a temperature sensor?

Alternatively if that doesn't work and you're feeling salty about it, put a cup of ice below it, or tape an cold pack ( like the ones you use for lunch box) to it because it will trick the sensor into thinking it's colder than it is, and will engage the heat.

 

 

 

 

 

 

 

 

 

Ordering & Quality

Photo Mfr. Part # Company Description Package PDF Qty Pricing
(USD)
CBT16210DGG-512 CBT16210DGG-512 Company:NXP USA Inc. Remark:IC BUS SWITCH 20BIT 48TSSOP Package:48-TFSOP (0.240", 6.10mm Width)
DataSheet
In Stock:On Order
Inquiry
Price:
Call
Inquiry
DS1621 DS1621 Company:Maxim Integrated Remark:Temperature Sensor Digital, Local -55°C ~ 125°C 9 b 8-DIP Package:8-DIP (0.300"", 7.62mm)
DataSheet
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621BFP-25 HY5PS121621BFP-25 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.5ns, CMOS, PBGA84, LEAD FREE, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621BFP-C4 HY5PS121621BFP-C4 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.5ns, CMOS, PBGA84, ROHS COMPLIANT, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621CFP-2 HY5PS121621CFP-2 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.45ns, CMOS, PBGA84, LEAD FREE, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621CFP-25 HY5PS121621CFP-25 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.5ns, CMOS, PBGA84, LEAD FREE, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621CFP-C4 HY5PS121621CFP-C4 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.5ns, CMOS, PBGA84, ROHS COMPLIANT, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS121621CFP-Y5 HY5PS121621CFP-Y5 Company:SK Hynix Inc Remark:DDR DRAM, 32MX16, 0.45ns, CMOS, PBGA84, ROHS COMPLIANT, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS561621AFP-25 HY5PS561621AFP-25 Company:SK Hynix Inc Remark:DDR DRAM, 16MX16, 0.4ns, CMOS, PBGA84, LEAD FREE, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry
HY5PS561621AFP-28 HY5PS561621AFP-28 Company:SK Hynix Inc Remark:DDR DRAM, 16MX16, 0.45ns, CMOS, PBGA84, LEAD FREE, FBGA-84 Package:TFBGA, BGA84,9X15,32
N/A
In Stock:On Order
Inquiry
Price:
Call
Inquiry

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