Overview
The TMP101NA/3K is a digital temperature sensor produced by Texas Instruments. It is designed to replace negative temperature coefficient (NTC) and positive temperature coefficient (PTC) thermistors. The device offers high accuracy and linearity, eliminating the need for calibration or external signal conditioning. With an on-chip 12-bit ADC, it provides resolutions down to 0.0625°C. The TMP101NA/3K is available in a 6-pin SOT-23 package and operates over a wide temperature range of –55°C to 125°C, making it suitable for various applications in communication, computer, consumer, environmental, industrial, and instrumentation sectors.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | –55 to 125 | °C |
| Storage Temperature Range | –60 to 150 | °C |
| Supply Voltage Range | 2.7 to 5.5 | V |
| Quiescent Current (Serial Bus Inactive) | 45 to 75 | µA |
| Quiescent Current (Serial Bus Active, SCL = 400 kHz) | 70 | µA |
| Quiescent Current (Serial Bus Active, SCL = 3.4 MHz) | 150 | µA |
| Shutdown Current | 0.1 to 13 | µA |
| Resolution | 9 to 12 bits (user-selectable) | |
| Accuracy (Typical) | ±1°C from –55°C to 125°C | |
| Accuracy (Maximum) | ±2°C from –55°C to 125°C | |
| Package Type | SOT-23 (6-pin) | |
| Interface Compatibility | SMBus, Two-Wire, I²C |
Key Features
- Digital Output with SMBus, Two-Wire, and I²C interface compatibility
- User-selectable resolution from 9 to 12 bits
- High accuracy: ±1°C (typical) and ±2°C (maximum) from –55°C to 125°C
- Low quiescent current: 45-µA active, 0.1-µA standby
- Wide supply voltage range: 2.7 V to 5.5 V
- One-shot, output switch, programmable resolution, shutdown mode, and standby mode
- Alert function (TMP101)
- Compact 6-pin SOT-23 package
Applications
- Power-supply temperature monitoring
- Computer peripheral thermal protection
- Notebook computers
- Cell phones
- Battery management
- Office machines
- Thermostat controls
- Environmental monitoring and HVAC
- Electromechanical device temperature monitoring
Q & A
- What is the operating temperature range of the TMP101NA/3K?
The operating temperature range is –55°C to 125°C.
- What are the available resolutions for the TMP101NA/3K?
The resolutions are user-selectable from 9 to 12 bits.
- What is the typical accuracy of the TMP101NA/3K?
The typical accuracy is ±1°C from –55°C to 125°C.
- What interfaces does the TMP101NA/3K support?
The device supports SMBus, Two-Wire, and I²C interfaces.
- What is the package type of the TMP101NA/3K?
The package type is a 6-pin SOT-23.
- What are the power supply requirements for the TMP101NA/3K?
The device operates with a supply voltage range of 2.7 V to 5.5 V.
- Does the TMP101NA/3K have an alert function?
Yes, the TMP101 device features an SMBus Alert function.[
- What are some common applications for the TMP101NA/3K?
Common applications include power-supply temperature monitoring, computer peripheral thermal protection, notebook computers, cell phones, battery management, and environmental monitoring.[
- How many devices can be connected on one bus for the TMP101NA/3K?
Up to three TMP101 devices can be connected on one bus with the SMBus Alert function.[
- What is the quiescent current of the TMP101NA/3K in standby mode?
The quiescent current in standby mode is 0.1 µA.[
