Overview
The AD7418ARZ is a 10-bit digital temperature sensor and single-channel analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed to operate over a wide temperature range and features an on-chip temperature sensor, making it suitable for various applications requiring precise temperature monitoring.
The AD7418ARZ can operate from a single 2.7 V to 5.5 V power supply and includes an I2C-compatible serial interface, allowing for easy integration into a variety of systems. It also includes a shutdown mode for energy efficiency and a programmable limit for customized temperature monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | 2.7 | 5.5 | V | ||
| Operating Temperature Range | -40 | 125 | °C | ||
| Resolution | 10 bits | ||||
| Temperature Conversion Time | 40 μs | ||||
| Update Rate (tR) | 400 μs | ||||
| Supply Current (I2C active) | 1.0 mA | ||||
| Supply Current (I2C inactive) | 350 μA | 600 μA | |||
| Supply Current (Shutdown mode) | 0.2 μA | 1.5 μA | |||
| Temperature Accuracy | ±2°C (±3°C over full range) | TA = −25°C to + 100°C (VDD = 3 V minimum) | |||
| Package | 8-Lead SOIC | ||||
| Data Output Interface | Digital, Serial I2C |
Key Features
- Wide Operating Supply Range: The device can operate from a single 2.7 V to 5.5 V power supply.
- I2C-Compatible Serial Interface: Allows for easy communication and integration into various systems.
- On-Chip Temperature Sensor: Enables accurate measurement of ambient temperature with a range of -40°C to 125°C.
- Programmable Limit and Shutdown Mode: Features for customized temperature monitoring and energy efficiency.
- High Accuracy: Temperature accuracy of ±2°C (±3°C over the full range).
- Resolution: 10-bit resolution for precise temperature measurements.
- Automatic Power-Down: At the end of a conversion, the device automatically powers down to conserve energy.
Applications
- Data Acquisition with Ambient Temperature Monitoring: Ideal for systems that require simultaneous data acquisition and temperature monitoring.
- Industrial Process Control: Suitable for monitoring temperatures in industrial environments.
- Automotive Applications: Can be used in automotive systems for temperature monitoring.
- Battery-Charging Applications: Useful in battery management systems to monitor temperature.
- Personal Computers and Servers: Can be integrated into computer systems for temperature monitoring and regulation.
- HVAC Systems: Applicable in heating, ventilation, and air conditioning systems for temperature control.
Q & A
- What is the operating voltage range of the AD7418ARZ?
The AD7418ARZ operates from a single 2.7 V to 5.5 V power supply.
- What is the temperature range of the on-chip temperature sensor?
The on-chip temperature sensor can measure temperatures from -40°C to 125°C.
- What is the resolution of the AD7418ARZ?
The AD7418ARZ has a 10-bit resolution.
- What type of interface does the AD7418ARZ use for data output?
The AD7418ARZ uses an I2C-compatible serial interface.
- Does the AD7418ARZ have a shutdown mode?
Yes, the AD7418ARZ includes a shutdown mode for energy efficiency.
- What is the typical temperature accuracy of the AD7418ARZ?
The typical temperature accuracy is ±2°C (±3°C over the full range).
- In what package is the AD7418ARZ available?
The AD7418ARZ is available in an 8-Lead SOIC package.
- Is the AD7418ARZ RoHS compliant?
Yes, the AD7418ARZ is RoHS compliant.
- What are some common applications of the AD7418ARZ?
Common applications include data acquisition, industrial process control, automotive, battery-charging, personal computers, and HVAC systems.
- How is the conversion initiated on the AD7418ARZ?
Conversion is initiated by pulsing the CONVST input or through automatic conversion mode during read or write operations.
