Overview
The ADT75ARM-REEL7, produced by Analog Devices Inc., is a highly accurate and compact digital temperature sensor. This component is designed to provide precise temperature measurements and is integrated into a complete temperature monitoring system. It is available in 8-lead MSOP and SOIC packages, making it suitable for a variety of applications where space is limited.
The ADT75 features a band gap temperature sensor and a 12-bit analog-to-digital converter (ADC), ensuring high accuracy and linearity over its entire operating temperature range. The device operates with a supply voltage range of 2.7 V to 5.5 V and has a low average supply current of typically 200 µA at 3.3 V.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 | 5.5 | V | ||
| Supply Current at 3.3 V | 200 | µA | |||
| Shutdown Current | 3 | µA | |||
| Operating Temperature Range | -55 | 125 | °C | ||
| Temperature Accuracy (A Grade) | ±2 | °C | -25°C to +100°C | ||
| Temperature Accuracy (B Grade) | ±1 | °C | 0°C to +70°C | ||
| ADC Resolution | 12-bit | ||||
| Serial Interface | SMBus / I2C-compatible |
Key Features
- High Accuracy: The ADT75 offers high accuracy temperature measurements with ±2°C accuracy from -25°C to +100°C for the A Grade and ±1°C accuracy from 0°C to +70°C for the B Grade.
- Low Power Consumption: The device operates with a low average supply current of typically 200 µA at 3.3 V and a shutdown current of typically 3 µA.
- Compact Packaging: Available in 8-lead MSOP and SOIC packages, making it suitable for space-constrained applications.
- Programmable Alert Function: The OS/ALERT pin can be configured to operate in either comparator or interrupt mode, providing flexible alert functionality.
- SMBus / I2C-Compatible Interface: Supports serial communication through SMBus or I2C protocols.
- Address Selection: The A0, A1, and A2 pins are available for address selection, allowing multiple devices to be connected on the same bus.
Applications
- Industrial Automation: Suitable for temperature monitoring in industrial control systems and process control environments.
- Consumer Electronics: Used in various consumer electronics such as personal computers, smart home devices, and domestic appliances.
- Aerospace and Defense: Can be used in aerospace and defense applications due to its wide operating temperature range and high accuracy.
- Medical Devices: Applicable in medical devices where precise temperature monitoring is critical.
- Automotive Systems: Suitable for temperature monitoring in automotive systems, including engine control and safety systems.
Q & A
- What is the operating temperature range of the ADT75?
The ADT75 operates over a temperature range of -55°C to +125°C.
- What is the typical supply current of the ADT75 at 3.3 V?
The typical supply current is 200 µA at 3.3 V.
- What is the resolution of the ADC in the ADT75?
The ADC has a resolution of 12 bits.
- What types of serial interfaces does the ADT75 support?
The ADT75 supports SMBus and I2C serial interfaces.
- How can the OS/ALERT pin be configured?
The OS/ALERT pin can be configured to operate in either comparator or interrupt mode.
- What is the purpose of the A0, A1, and A2 pins on the ADT75?
The A0, A1, and A2 pins are used for address selection.
- What is the shutdown current of the ADT75?
The shutdown current is typically 3 µA.
- How accurate is the temperature measurement of the ADT75?
The temperature accuracy is ±2°C from -25°C to +100°C for the A Grade and ±1°C from 0°C to +70°C for the B Grade.
- What is the significance of the one-shot mode in the ADT75?
The one-shot mode allows for a single temperature measurement to be taken without continuous operation, which can help in power-saving scenarios.
- What types of packages are available for the ADT75?
The ADT75 is available in 8-lead MSOP and SOIC packages.
