Overview
The ADT75ARMZ from Analog Devices Inc. is a comprehensive temperature monitoring system integrated into 8-lead MSOP and SOIC packages. It features a band gap temperature sensor and a 12-bit analog-to-digital converter (ADC), providing high accuracy and reliability in temperature measurements. This device is designed to operate over a wide temperature range and is suitable for various applications requiring precise temperature monitoring.
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 | Typical | ||
| Shutdown Current (at 3.3 V) | 3 µA | µA | Typical | ||
| Temperature Range | -55°C | +125°C | °C | ||
| Temperature Accuracy (A Grade) | ±2°C | °C | -25°C to +100°C | ||
| Resolution | 12 bits | ||||
| Serial Interface | SMBus/I2C compatible |
Key Features
- High accuracy temperature sensor with ±2°C accuracy from -25°C to +100°C for A Grade and ±1°C from 0°C to +70°C for B Grade.
- 12-bit analog-to-digital converter (ADC) using a first-order Σ-Δ modulator for precise temperature measurements.
- Operating supply voltage range from 2.7 V to 5.5 V.
- Low power consumption with a typical supply current of 200 µA at 3.3 V and a shutdown current of 3 µA.
- SMBus/I2C-compatible serial interface for easy communication with microcontrollers and processors.
- Programmable temperature limits and alert functions via the OS/ALERT pin.
- One-shot mode for reduced power consumption during intermittent measurements.
- Compact 8-lead MSOP and SOIC packages with good heat dissipation performance.
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 various 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 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 ADT75's ADC?
The resolution is 12 bits. - What serial interface does the ADT75 support?
The ADT75 supports SMBus/I2C-compatible serial interface. - What is the accuracy of the ADT75 temperature sensor?
The accuracy is ±2°C from -25°C to +100°C for A Grade and ±1°C from 0°C to +70°C for B Grade. - Does the ADT75 have a shutdown mode?
Yes, the ADT75 has a shutdown mode that reduces the current consumption to typically 3 µA at 3.3 V. - What is the one-shot mode in the ADT75?
The one-shot mode allows the device to power up, perform a temperature conversion, and then power down again, reducing power consumption during intermittent measurements. - What package types are available for the ADT75?
The ADT75 is available in 8-lead MSOP and SOIC packages. - Is the ADT75 RoHS compliant?
Yes, the ADT75 is Lead Free and RoHS compliant. - What are some common applications of the ADT75?
Common applications include industrial automation, automotive industry, medical equipment, and heavy industry.
