Overview
The AD7814ARMZ-REEL, produced by Analog Devices Inc., is a comprehensive temperature monitoring system. It is available in either a 6-lead SOT-23 package or an 8-lead MSOP package. This device integrates a band gap temperature sensor and a 10-bit analog-to-digital converter (ADC), enabling accurate temperature measurements with a resolution of 0.25°C. The AD7814 features a flexible serial interface compatible with SPI, QSPI, and MICROWIRE protocols, making it easily interfaced with most microcontrollers and DSPs. It operates over a wide supply voltage range of 2.7 V to 5.5 V and has a low supply current, making it suitable for various applications requiring precise temperature monitoring.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 6-lead SOT-23 or 8-lead MSOP |
| Temperature Range | –55°C to +125°C |
| Temperature Accuracy | ±2°C |
| Resolution | 10-bit, 0.25°C |
| Supply Voltage | 2.7 V to 5.5 V |
| Supply Current | Low power consumption |
| Serial Interface | SPI, QSPI, MICROWIRE compatible |
| Conversion Time | Approximately 25 µs |
| Shutdown Mode | Controlled via serial interface |
Key Features
- High accuracy temperature measurement with ±2°C accuracy.
- Wide operating temperature range of –55°C to +125°C.
- Low power consumption with a wide supply voltage range of 2.7 V to 5.5 V.
- SPI, QSPI, and MICROWIRE compatible serial interface for easy microcontroller and DSP interfacing.
- Shutdown mode controlled via the serial interface to conserve power.
- Compact SOT-23 or MSOP package for space-saving designs.
Applications
- Personal computers and office equipment.
- Electronic test equipment and domestic appliances.
- Hard disk drives and process control systems.
- Any application requiring precise and reliable temperature monitoring.
Q & A
- What is the temperature measurement range of the AD7814?
The AD7814 measures temperatures from –55°C to +125°C. - What is the resolution of the AD7814 temperature sensor?
The resolution is 10-bit, providing a temperature resolution of 0.25°C. - What are the compatible serial interfaces for the AD7814?
The AD7814 is compatible with SPI, QSPI, and MICROWIRE protocols. - How is the shutdown mode controlled on the AD7814?
The shutdown mode is controlled via the serial interface. - What is the supply voltage range for the AD7814?
The supply voltage range is 2.7 V to 5.5 V. - What is the typical conversion time for the AD7814?
The typical conversion time is approximately 25 µs. - In what packages is the AD7814 available?
The AD7814 is available in 6-lead SOT-23 and 8-lead MSOP packages. - What are some common applications for the AD7814?
Common applications include personal computers, office equipment, electronic test equipment, domestic appliances, and process control systems. - How does the AD7814 conserve power?
The AD7814 has a shutdown mode that can be controlled via the serial interface to conserve power. - Is the AD7814 suitable for low-power designs?
Yes, the AD7814 is designed for low power consumption, making it suitable for low-power designs.
