Overview
The TMP75BIDGKR is a digital temperature sensor produced by Texas Instruments. It is designed to provide accurate temperature measurements with a 12-bit analog-to-digital converter (ADC) and operates on a standard two-wire serial interface. This device is compatible with the industry-standard LM75 and TMP75, making it a versatile option for various applications. The TMP75B can operate over a wide supply range of 1.4 V to 3.6 V and is specified over a temperature range of –55°C to +125°C, making it suitable for a broad range of environmental conditions.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Temperature Range | –55 | +125 | °C | ||
| Temperature Resolution | 0.0625 | °C | |||
| Temperature Accuracy (Error) | –55°C to +125°C | ±1 | ±2 | °C | |
| Operating Supply Range | 1.4 | 3.6 | V | ||
| Quiescent Current | Serial bus inactive, CR1 = 0, CR0 = 0 (default) | 45 | 89 | μA | |
| Shutdown Current | 0.3 | μA | |||
| ADC Resolution | 12 Bit | ||||
| Conversion Time (One-shot mode) | CR1 = 0, CR0 = 0 (default) | 20 | 27 | 35 | ms |
Key Features
- Digital Output with Standard Two-Wire Serial Interface: Compatible with SMBus and two-wire interface, allowing up to eight devices on the same bus.
- Low-Voltage Operation: Operates at a supply voltage range of 1.4 V to 3.6 V.
- High Accuracy: Factory-calibrated temperature accuracy with an error of ±1°C to ±3°C over the temperature range of –55°C to +125°C.
- Overtemperature ALERT Pin: Programmable temperature limits and an ALERT pin for overtemperature alerts.
- Shutdown Mode: Battery power-saving mode with a quiescent current of 0.3 μA in shutdown.
- One-Shot Conversion Mode: Custom update rates for temperature conversions.
- Pin-Programmable Bus Addresses: Up to eight pin-programmable bus addresses.
Applications
- Power-Supply Temperature Monitoring: Monitoring temperatures in power supply systems.
- Computer Peripheral Thermal Protection: Thermal protection for computer peripherals and components.
- Notebook Computers and Cell Phones: Temperature monitoring in portable electronic devices.
- Battery Management: Temperature sensing for battery management systems.
- Office Machines and HVAC Systems: Temperature monitoring in office equipment and heating, ventilation, and air conditioning systems.
- Environmental Monitoring: Monitoring temperatures in various environmental conditions.
Q & A
- What is the operating temperature range of the TMP75B?
The TMP75B operates over a temperature range of –55°C to +125°C.
- What is the resolution of the temperature measurements provided by the TMP75B?
The TMP75B provides temperature measurements with a resolution of 0.0625°C.
- What is the supply voltage range for the TMP75B?
The TMP75B operates with a supply voltage range of 1.4 V to 3.6 V.
- Does the TMP75B support multiple devices on the same bus?
Yes, the TMP75B supports up to eight devices on the same bus.
- What is the purpose of the ALERT pin on the TMP75B?
The ALERT pin is used for overtemperature alerts and can be programmed with specific temperature limits.
- How does the TMP75B conserve power?
The TMP75B has a shutdown mode that reduces the quiescent current to 0.3 μA for battery power saving.
- What is the conversion time for one-shot mode in the TMP75B?
The conversion time in one-shot mode is typically 27 ms, with a range of 20 ms to 35 ms.
- Is the TMP75B compatible with SMBus and I2C interfaces?
Yes, the TMP75B is compatible with SMBus and two-wire (I2C) interfaces.
- What is the accuracy of the temperature measurements provided by the TMP75B?
The temperature accuracy of the TMP75B is ±1°C to ±3°C over the specified temperature range.
- What are the common applications of the TMP75B?
The TMP75B is commonly used in power-supply temperature monitoring, computer peripheral thermal protection, notebook computers, cell phones, battery management, office machines, and environmental monitoring.
