Overview
The ADT7302ARMZ-REEL7, produced by Analog Devices Inc., is a high-precision digital temperature sensor designed for accurate temperature monitoring in various applications. This device is available in space-saving SOT-23 and MSOP packages, making it ideal for compact designs. The ADT7302 features a band gap temperature sensor and a 13-bit analog-to-digital converter (ADC), providing a temperature resolution of 0.03125°C. It operates over a wide supply voltage range of 2.7 V to 5.25 V and supports multiple serial interface protocols, including SPI, QSPI, and MICROWIRE, ensuring easy integration with most microcontrollers.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Temperature Accuracy | ±1 | ±2 | ±3 | °C | TA = 0°C to 70°C, TA = -20°C to +85°C, TA = -40°C to +125°C |
| Temperature Resolution | 0.03125 | °C | |||
| Autoconversion Update Rate | 1.5 sec | Temperature measurement every 1.5 seconds | |||
| Temperature Conversion Time | 1.2 ms | ||||
| Supply Voltage | 2.7 | 5.25 | V | For specified performance | |
| Supply Current (Normal Mode) | 1.6 | 2.2 | mA | VDD = 3.3 V, powered up and converting | |
| Shutdown Mode Current | 4.88 μW | VDD = 3.3 V at 1 SPS | |||
| Operating Temperature Range | -40 | +125 | °C | ||
| Package/Case | SOT-23, MSOP-8 | ||||
Key Features
- High Accuracy: The ADT7302 offers a maximum temperature accuracy of ±2°C over the 0°C to 70°C range and ±3°C over the -40°C to +125°C range.
- High Resolution: Provides a 13-bit temperature reading with a resolution of 0.03125°C.
- Flexible Interface: Compatible with SPI, QSPI, and MICROWIRE protocols, making it easy to interface with most microcontrollers.
- Low Power Consumption: Features a shutdown mode that reduces power consumption to 4.88 μW at VDD = 3.3 V and 1 SPS.
- Compact Packages: Available in space-saving SOT-23 and MSOP-8 packages.
- Wide Supply Voltage Range: Operates from 2.7 V to 5.25 V, ensuring versatility in various applications.
Applications
- Medical Equipment: Suitable for precise temperature monitoring in medical devices.
- Automotive: Used in automotive systems for temperature monitoring and control.
- Environmental Controls: Ideal for environmental monitoring and control systems.
- Oil and Hydraulic Systems: Monitors temperatures in oil and hydraulic systems.
- Cell Phones and Hard Disk Drives: Used in consumer electronics for temperature monitoring.
- Personal Computers and Office Equipment: Suitable for temperature monitoring in PCs and office equipment.
- Domestic Appliances: Used in various domestic appliances for temperature control.
- Process Control: Applied in industrial process control systems for accurate temperature monitoring.
Q & A
- What is the temperature accuracy of the ADT7302?
The ADT7302 has a maximum temperature accuracy of ±2°C over the 0°C to 70°C range and ±3°C over the -40°C to +125°C range.
- What is the resolution of the temperature readings provided by the ADT7302?
The ADT7302 provides a 13-bit temperature reading with a resolution of 0.03125°C.
- What serial interface protocols is the ADT7302 compatible with?
The ADT7302 is compatible with SPI, QSPI, and MICROWIRE protocols.
- What is the power consumption in shutdown mode?
In shutdown mode, the power consumption is reduced to 4.88 μW at VDD = 3.3 V and 1 SPS.
- What are the available package types for the ADT7302?
The ADT7302 is available in SOT-23 and MSOP-8 packages.
- What is the operating temperature range of the ADT7302?
The operating temperature range is -40°C to +125°C.
- What is the supply voltage range for the ADT7302?
The ADT7302 operates from a supply voltage of 2.7 V to 5.25 V.
- Can the ADT7302 be used in automotive applications?
Yes, the ADT7302 is suitable for use in automotive systems for temperature monitoring and control.
- Is the ADT7302 compatible with other Analog Devices temperature sensors?
The ADT7302 is compatible with the AD7814 temperature sensor.
- What is the typical supply current in normal mode?
The typical supply current in normal mode is 2.2 mA at VDD = 3.3 V.
