Overview
The AD7418ARM, manufactured by Analog Devices Inc., is a 10-bit digital temperature sensor and analog-to-digital converter (ADC) integrated into a single chip. This device is designed to provide accurate temperature measurements and convert analog voltage signals into digital data. It operates from a single power supply ranging from 2.7 V to 5.5 V, making it versatile for various applications. The AD7418ARM features an on-chip temperature sensor, a successive approximation ADC, and an I²C-compatible serial interface, allowing for easy integration into digital systems.
Key Specifications
| Parameter | Description |
|---|---|
| Part Number | AD7418ARM |
| Manufacturer | Analog Devices Inc. |
| Package | 8-MSOP, 8-TSSOP (0.118", 3.00mm Width) |
| Supply Voltage | 2.7 V to 5.5 V |
| Resolution | 10 bits |
| Operating Temperature | -40°C to 125°C |
| Temperature Accuracy | ±2°C (±3°C over full range) |
| Conversion Time | 30 ms for temperature sensor, 15 ms for analog channels |
| Interface | I²C-compatible serial interface |
| Mounting Type | Surface Mount |
Key Features
- On-chip Temperature Sensor: Measures ambient temperature with an accuracy of ±2°C at 25°C and ±3°C over the full range.
- Successive Approximation ADC: 10-bit resolution with a conversion time of 15 ms for analog channels and 30 ms for the temperature sensor.
- I²C-compatible Serial Interface: Allows for easy communication with digital systems and supports up to 8 devices on a single bus.
- Automatic Power-down: Reduces power consumption by entering a low power shutdown mode at slower throughput rates.
- Programmable Limit and Shutdown Mode: Enhances power management and allows for customizable operation.
- Wide Operating Supply Range: Operates from 2.7 V to 5.5 V, making it suitable for a variety of applications.
Applications
- Data Acquisition: Used in systems that require ambient temperature monitoring.
- Industrial Process Control: Monitors temperature in industrial processes.
- Automotive Systems: Suitable for temperature monitoring in automotive applications.
- Battery Charging Systems: Ensures accurate temperature monitoring during battery charging.
- Personal Computers: Used for temperature monitoring in computer systems.
Q & A
- What is the operating temperature range of the AD7418ARM?
The AD7418ARM operates over a temperature range of -40°C to 125°C.
- What is the resolution of the AD7418ARM ADC?
The AD7418ARM has a 10-bit resolution.
- What type of interface does the AD7418ARM use?
The AD7418ARM uses an I²C-compatible serial interface.
- How accurate is the temperature measurement of the AD7418ARM?
The temperature measurement accuracy is ±2°C at 25°C and ±3°C over the full range.
- What is the conversion time for the temperature sensor and analog channels?
The conversion time is 30 ms for the temperature sensor and 15 ms for analog channels.
- Can multiple AD7418ARM devices be connected to a single bus?
Yes, up to 8 devices can be connected to a single bus due to the I²C-compatible serial interface.
- What is the power supply range for the AD7418ARM?
The AD7418ARM operates from a single power supply ranging from 2.7 V to 5.5 V.
- Does the AD7418ARM have automatic power-down features?
Yes, the device features automatic power-down at the end of a conversion and can be programmed to operate in a low power shutdown mode.
- What type of package is the AD7418ARM available in?
The AD7418ARM is available in 8-MSOP and 8-TSSOP packages.
- Can the AD7418ARM use an external reference voltage?
Yes, an external 2.5 V reference can be connected to the REFIN pin, which will shut down the internal reference.
