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Name: DS18B20
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS18B20
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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

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Analog Devices Inc./Maxim Integrated DS18B20

Part No.:: DS18B20

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: TO-226-3, TO-92-3 (TO-226AA)

Datasheet:: DS18B20.pdf

Description:: SENSOR DIGITAL -55C-125C TO92-3

In Stock:: 3531

Quantity:: Add To Cart

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DS18B20 Specifications

Packaging:
Bulk
Series:
-
ProductStatus:
Obsolete
SensorType:
Digital, Local
SensingTemperature-Local:
-55°C ~ 125°C
SensingTemperature-Remote:
-
OutputType:
1-Wire®
Voltage-Supply:
3V ~ 5.5V
Resolution:
12 b
Features:
Output Switch, Programmable Limit, Programmable Resolution
Accuracy-Highest(Lowest):
±0.5°C (±2°C)
TestCondition:
-10°C ~ 85°C (-55°C ~ 125°C)
OperatingTemperature:
-55°C ~ 125°C
MountingType:
Through Hole

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DS18B20 information

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DS18B20 Typical application Circuitry

DS18B20

The DS18B20 is a widely used digital temperature sensor from the DS18xx series by Maxim Integrated. This sensor is acclaimed for its precision, digital output, and ease of interfacing with microcontrollers, making it a popular choice for a variety of applications, including environmental monitoring, HVAC systems, and temperature regulation systems. The DS18B20's ability to operate on a single-wire bus reduces the complexity of wiring in systems that require multiple sensors.

1. Power Supply Arrangement: The DS18B20 operates between 3.0V and 5.5V. Connect the VDD pin of the DS18B20 to a power source that is in this range. Providing a stable and noise-free power supply is crucial for accurate readings.

2. Ground Connection: The ground of your circuit should be linked to the DS18B20's GND pin. This ground connection is essential for the sensor's stability and proper functioning.

3. Data Line Configuration: The DS18B20 communicates over a one-wire bus, which minimizes wiring complexity for multiple sensors. Attach your microcontroller's DQ (Data) pin to a digital I/O pin. This pin is used for both power and data transfer in parasitic mode, or just for data when using an external power supply.

4. Parasitic Power Mode (Optional): In "parasitic power" mode, the DS18B20 uses the data line as its power source. In this mode, connect the VDD pin to ground, and use a strong pull-up resistor (typically 4.7kΩ) on the DQ line to supply power during temperature conversions.

5. External Power Mode: Alternatively, you can use an external power supply for the DS18B20. In this case, connect a pull-up resistor (again, typically 4.7kΩ) between the VDD and DQ pins to ensure proper data transmission on the one-wire bus.

6. PCB Layout Tips: When designing a PCB or setting up a circuit with the DS18B20, keep the data line as short as possible to prevent signal degradation. If long wires are necessary, consider using a lower resistance value for the pull-up resistor.

7. Thermal Considerations: For accurate temperature measurements, ensure the DS18B20 is appropriately placed and isolated from heat sources, including the heat generated by other components on the PCB.

To sum up, the DS18B20 is a digital temperature sensor that is accurate and adaptable, making it appropriate for a variety of temperature monitoring uses. Proper power supply connections, grounding, and data line configuration are crucial. The choice between parasitic power and external power modes offers flexibility in different application scenarios. Additionally, careful consideration of the PCB layout and thermal isolation ensures accurate and reliable temperature readings from the DS18B20.

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6. What is the process for return or replacement of DS18B20?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DS18B20 we delivered, we will accept the replacement or return of the DS18B20 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of DS18B20.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations