Part Number: DS18B20

Function: Programmable Resolution 1-Wire Digital Thermometer

Package: TO-92, uSOP 8pin type

Manufacturer: Maxim Integrated (formerly Dallas)

Image

Description

This is Digital Thermometer Sensor.

The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user programmable upper and lower trigger points.
The Device communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C.
In addition, the Device can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.

Pinout

Features

1. Unique 1-Wire® interface requires only one port pin for communication

2. Each device has a unique 64-bit serial code stored in an onboard ROM

3. Multidrop capability simplifies distributed temperature sensing applications

4. Requires no external components

5. Can be powered from data line. Power supply range is 3.0V to 5.5V

 

Block Diagram

Referece Site : https://www.hobbytronics.co.uk/ds18b20-arduino

 

DS18B20 Datasheet PDF

Other data sheets are available within the file: DS18B20+, DS18B20+T&R, DS18B20-SL+T&R, DS18B20-SL/T&R

 

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Part Number: LM75

Function: Digital Temperature Sensor and Watchdog

Package: SO 8 Pin Type

Manufacturer: Maxim Integrated

Image and Pinouts:

General

Description

This is Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface.

The LM75 temperature sensor includes a delta-sigma analog-to-digital converter, and a digital overtempera ture detector. The host can query the LM75 through its I2C interface to read temperature at any time. The open-drain overtemperature output (OS) sinks current when the programmable temperature limit is exceeded. The OS output operates in either of two modes, com parator or interrupt.

The host controls the temperature at which the alarm is asserted (TOS) and the hysteresis temperature below which the alarm condition is not valid (THYST). Also, the LM75’s TOSand THYSTregis ters can be read by the host. The address of the LM75 is set with three pins to allow multiple devices to work on the same bus. Power-up is in comparator mode, with defaults of TOS= +80°C and THYST= +75°C. The 3.0V to 5.5V supply voltage range, low supply current, and I2C interface make the LM75 ideal for many applications in thermal management and protection.

Features

1. SO (SOP) and µMAX (µSOP) Packages

2. I2C Bus Interface

3. Separate Open-Drain OS Output Operates as Interrupt or Comparator/Thermostat Input

4. Register Readback Capability

5. Power-Up Defaults Permit Stand-Alone Operation as a Thermostat

6. 3.0V to 5.5V Supply Voltage

7. Low Operating Supply Current 250µA (typ), 1mA(max)

8. 4µA (typ) Shutdown Mode Minimizes Power Consumption

9. Up to Eight LM75s Can Be Connected to a Single Bus

10. Pin- and/or Register-Compatible with Improved Performance Maxim Sensors Including
MAX7500, MAX6625, MAX6626, DS75LV, and DS7505

Applications:

1. Thermal System Management

2. Thermal Protection

3. Test Equipment

4. Computers and Office Electronics

LM75 Datasheet PDF Download

 

Other data sheets are available within the file: LM75BIM-3+, LM75BIM-5+, LM75BIMM-3+, LM75BIMM-5+