Overview
The ADT7410TRZ from Analog Devices Inc. is a high-accuracy digital temperature sensor housed in a narrow 8-lead SOIC package. It incorporates a band gap temperature reference and a 13-bit Analog-to-Digital Converter (ADC) to monitor and digitize temperature with a resolution of 0.0625°C. The ADC resolution can be enhanced to 16 bits (0.0078°C) by configuring the appropriate register. This sensor is designed for precise temperature measurement and offers various features that make it suitable for a wide range of applications.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Operating Temperature Range | −55°C to +150°C |
| ADC Resolution (Default) | 13 bits (0.0625°C) |
| ADC Resolution (Configurable) | 16 bits (0.0078°C) |
| Average Supply Current at 3.3 V | Typically 210 μA |
| Shutdown Current | Typically 2 μA |
| Interface | I²C-compatible |
| Package Type | 8-lead SOIC-N |
| Critical Temperature Limit | Programmable, default 147°C |
Key Features
- High accuracy digital temperature sensor with ±0.5°C accuracy.
- Shutdown mode with a current of typically 2 μA.
- Fast first temperature conversion on power-up in 6 ms.
- No external clock required except for I²C interface operations.
- Programmable interrupts for overtemperature and undertemperature conditions.
- Critical overtemperature indicator (CT pin) and overtemperature/undertemperature indicator (INT pin) with open-drain configuration.
- Power-saving 1 sample per second (SPS) mode.
- No user calibration or linearity correction required.
- Address selection pins (A0 and A1) providing four possible I²C addresses.
Applications
- Medical equipment.
- Environmental control systems.
- Computer thermal monitoring.
- Thermal protection systems.
- Industrial process control.
- Power system monitors.
- Hand-held applications.
Q & A
- What is the default ADC resolution of the ADT7410?
The default ADC resolution is 13 bits, providing a temperature resolution of 0.0625°C.
- Can the ADC resolution be changed?
- What is the operating temperature range of the ADT7410?
The ADT7410 operates over a temperature range of −55°C to +150°C.
- What is the supply voltage range for the ADT7410?
The supply voltage range is from 2.7 V to 5.5 V.
- How many possible I²C addresses does the ADT7410 support?
The ADT7410 supports four possible I²C addresses using the address selection pins A0 and A1.
- What is the purpose of the CT and INT pins?
The CT pin is for critical overtemperature indication, and the INT pin is for overtemperature/undertemperature indication. Both pins are open-drain outputs.
- Does the ADT7410 require external calibration?
No, the ADT7410 does not require user calibration or linearity correction.
- What is the average supply current at 3.3 V?
The average supply current at 3.3 V is typically 210 μA.
- How long does the first temperature conversion take on power-up?
The first temperature conversion on power-up takes typically 6 ms.
- What is the shutdown current of the ADT7410?
The shutdown current is typically 2 μA.
