ADT7310 ±0.5°C Accurate, 16-Bit Digital SPI Temperature Sensor
The ADT7310 is a high accuracy digital temperature sensor in a narrow SOIC package. It contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625 °C). This can be changed to 16 bits (0.0078 °C) by setting Bit 7 in the configuration register (Register Address 0x01).
The ADT7310 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7310 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 μA. The ADT7310 is rated for operation over the −55°C to +150°C temperature range.
The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The default critical temperature limit is 147°C. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT and CT pins can operate in either comparator or interrupt mode.
Applications
- Medical equipment
- Environmental control systems
- Computer thermal monitoring
- Thermal protection
- Industrial process control
- Power system monitors
- Hand-held applications
Features and Benefits- High performance:
Temperature accuracy
±0.5°C from −40°C to +105°C
(2.7 V to 3.6 V)
±0.4°C from −40°C to +105°C
(3.0 V)
16-bit temperature resolution: 0.0078°C
Fast first temperature conversion on power-up of 6 ms - Low power:
Power saving 1 sample per second (SPS) mode
700 μW typical at 3.3 V in normal mode
7 μW typical at 3.3 V in shutdown mode
- Easy implementation:
No temperature calibration/correction required by user
No linearity correction required - Wide operating ranges:
Temperature range: −55°C to
Voltage range: 2.7 V to 5.5 V - Programmable interrupts:
Critical overtemperature interrupt
Overtemperature/undertemperature interrupt - SPI-compatible interface
- 8-lead narrow SOIC RoHS-compliant package
| Building Technology- Building Control and Automation
Automotive- Powertrain Body and Chassis
Reference Designs |
Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADT7310TRZ Production | 8 ld SOIC | OTH 98 | -55 to 150C | 1.61 | 1.32 | Y |
| ADT7310TRZ-REEL Production | 8 ld SOIC | REEL 2500 | -55 to 150C | 0 | 1.32 | Y |
| ADT7310TRZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -55 to 150C | 0 | 1.32 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-ADT7X10EBZ | Evaluation Board | 59 | Y |
Reference Materials
