Overview
The AD7416ARM, produced by Analog Devices Inc., is a temperature-monitoring device designed for precise ambient temperature measurement. This component is part of the AD7416 series and is housed in an 8-lead package, such as 8-TSSOP or 8-MSOP. It is specifically tailored for applications requiring accurate temperature sensing and is a superior replacement for the LM75 temperature sensor. The device operates on a wide supply range of 2.7 V to 5.5 V, making it versatile for various power environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Temperature Sensor Accuracy | ±2.0 | ±3.0 | °C | TA = −25°C to +100°C (VDD = 3 V minimum), TA = −40°C to +125°C (VDD = 3 V minimum) | |
| Resolution | 10 | Bits | |||
| Temperature Conversion Time | 40 | μs | |||
| Update Rate (tR) | 400 | μs | |||
| Supply Current (I2C active) | 1.0 | mA | |||
| Supply Current (I2C inactive) | 0.2 | 1.5 | μA | ||
| Shutdown Mode Current | 0.2 | 1.5 | μA |
Key Features
- I2C-Compatible Serial Interface: Allows for easy communication and integration with other I2C devices, enabling up to 8 AD7416 devices to be connected to a single bus.
- Selectable Serial Bus Address: Enhances flexibility in system design by allowing multiple devices to share the same bus.
- On-Chip Temperature Sensor: Provides accurate ambient temperature measurements with a working range of −40°C to +125°C.
- Automatic Power-Down: Reduces power consumption by automatically entering power-down mode at the end of a conversion.
- Wide Operating Supply Range: Operates from 2.7 V to 5.5 V, making it suitable for a variety of power supply environments.
- OTI (Overtemperature Indicator) Pin: Provides an open-drain output that signals if the temperature exceeds a setpoint, useful for monitoring and control applications.
Applications
- Data Acquisition with Ambient Temperature Monitoring: Ideal for systems that require precise temperature measurements alongside data acquisition.
- Industrial Process Control: Suitable for monitoring temperatures in industrial environments.
- Automotive Applications: Can be used in automotive systems for temperature monitoring and control.
- Battery-Charging Applications: Useful for monitoring battery temperatures during charging cycles.
- Personal Computers: Can be integrated into PC systems for temperature monitoring and thermal management.
Q & A
- What is the operating voltage range of the AD7416ARM?
The AD7416ARM operates on a supply voltage range of 2.7 V to 5.5 V.
- What is the accuracy of the temperature sensor in the AD7416ARM?
The temperature sensor has an accuracy of ±2.0°C from −25°C to +100°C and ±3.0°C from −40°C to +125°C.
- How many devices can be connected to a single I2C bus?
Up to 8 AD7416 devices can be connected to a single I2C bus.
- What is the resolution of the temperature sensor in the AD7416ARM?
The temperature sensor has a resolution of 10 bits.
- What is the typical supply current when the I2C interface is active?
The typical supply current when the I2C interface is active is 1.0 mA.
- Does the AD7416ARM have an overtemperature indicator?
Yes, the AD7416ARM has an OTI (Overtemperature Indicator) pin that signals if the temperature exceeds a setpoint.
- What are some common applications of the AD7416ARM?
Common applications include data acquisition, industrial process control, automotive applications, battery-charging applications, and personal computers.
- What is the package type of the AD7416ARM?
The AD7416ARM is available in 8-TSSOP and 8-MSOP packages.
- Does the AD7416ARM support automatic power-down?
Yes, the AD7416ARM supports automatic power-down at the end of a conversion to reduce power consumption.
- What is the temperature conversion time of the AD7416ARM?
The temperature conversion time is 40 μs.
