Overview
The ADT75ARMZ-REEL, produced by Analog Devices Inc., is a comprehensive temperature monitoring system integrated into a compact 8-lead MSOP or SOIC package. This device features a bandgap temperature sensor and a 12-bit analog-to-digital converter (ADC), enabling precise temperature measurements. The ADT75 is designed to operate over a wide temperature range of -55°C to +125°C and is powered by a supply voltage of 2.7 V to 5.5 V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Supply Voltage | 2.7 V | 5.5 V | V | ||
| Supply Current (at 3.3 V) | 200 µA | µA | |||
| Shutdown Current | 3 µA | µA | |||
| Temperature Range | -55°C | +125°C | °C | ||
| ADC Resolution | 12 Bits | ||||
| Temperature Resolution | 0.0625 °C | °C | |||
| Temperature Conversion Time | 60 ms | ms | |||
| Update Rate | 100 ms | ms | Conversion started every 100 ms | ||
| Long Term Drift | 0.08 °C | °C | Drift over 10 years, if part is operated at 55°C | ||
| Temperature Hysteresis | 0.03 °C | °C | Temperature cycle = 25°C to 125°C to 25°C | ||
| OS/ALERT Output Low Voltage | 0.4 V | V | IOL = 3 mA | ||
| OS/ALERT Pin Capacitance | 10 pF | pF | |||
| OS/ALERT High Output Leakage Current | 0.1 µA | 5 µA | µA | OS/ALERT pin pulled up to 5.5 V |
Key Features
- High Accuracy: The ADT75 offers high accuracy with ±2°C from -25°C to +100°C and ±3°C from -55°C to +100°C.
- Low Power Consumption: The device operates with a typical supply current of 200 µA at 3.3 V and a shutdown current of 3 µA.
- Flexible Configuration: Features include one-shot mode, output switch, programmable limit, and shutdown mode, allowing for versatile configuration options.
- I²C/SMBus Compatibility: The device supports I²C/SMBus communication, facilitating easy integration with microcontrollers and processors.
- Compact Packaging: Available in 8-lead MSOP and SOIC packages, providing a compact solution for various applications.
- Long-Term Stability: Exhibits long-term drift of 0.08 °C over 10 years when operated at 55°C.
Applications
- Industrial Automation: Real-time monitoring of temperature changes on production lines to ensure process stability and product quality.
- Automotive Industry: Measurement and control of engine temperature, air conditioning temperature, and other critical temperatures.
- Medical Equipment: Precise measurement of body temperature and other physiological parameters.
- Heavy Industry: Measurement of surface temperatures of objects such as steel casting, furnace temperature, machine parts, and room temperature).
Q & A
- What is the operating temperature range of the ADT75?
The ADT75 operates over a temperature range of -55°C to +125°C).
- What is the supply voltage range for the ADT75?
The supply voltage range is from 2.7 V to 5.5 V).
- What is the typical supply current of the ADT75 at 3.3 V?
The typical supply current is 200 µA at 3.3 V).
- What is the resolution of the ADC in the ADT75?
The ADC resolution is 12 bits, providing a temperature resolution of 0.0625 °C).
- Does the ADT75 support I²C/SMBus communication?
Yes, the ADT75 is compatible with I²C/SMBus communication protocols).
- What are the package options for the ADT75?
The ADT75 is available in 8-lead MSOP and SOIC packages).
- What is the long-term drift of the ADT75?
The long-term drift is 0.08 °C over 10 years when operated at 55°C).
- What are some common applications of the ADT75?
Common applications include industrial automation, automotive industry, medical equipment, and heavy industry).
- Is the ADT75 RoHS compliant?
Yes, the ADT75 is Lead Free and RoHS compliant).
- What is the shutdown current of the ADT75?
The shutdown current is typically 3 µA).
