Overview
The TMP75C, specifically the TMP75CIDGKR model, is an integrated digital temperature sensor produced by Texas Instruments. This device features a 12-bit analog-to-digital converter (ADC) and operates within a supply range of 1.4 V to 3.6 V. It is pin and register compatible with the NCT75 and ADT75, making it a versatile and low-voltage alternative. The TMP75C is available in SOIC-8 and VSSOP-8 packages and does not require any external components to sense temperature. It offers high accuracy and a wide operating temperature range of –55°C to +125°C, making it suitable for various thermal management and protection applications.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC-8, VSSOP-8 |
| Pins | 8 |
| Operating Temperature Range | –55°C to +125°C |
| Operating Supply Range | 1.4 V to 3.6 V |
| Quiescent Current | 15 µA Active (typ), 0.3 µA Shutdown (typ) |
| Accuracy | ±0.25°C (typ) from 0°C to +70°C, ±0.5°C (typ) from –20°C to +85°C, ±1°C (typ) from –55°C to +125°C |
| Resolution | 12 Bits (0.0625°C) |
| Interface | SMBus and Two-Wire Serial Interface |
| Bus Addresses | Up to 8 Pin-Programmable Bus Addresses |
| ALERT Pin | Overtemperature ALERT Pin with Programmable Trip Values |
| Shutdown Mode | Shutdown Mode for Battery Power Saving |
| Conversion Mode | One-Shot Conversion Mode |
Key Features
- Low-Voltage Alternative to NCT75 and ADT75
- Digital Output with Two-Wire Serial Interface
- Up to 8 Pin-Programmable Bus Addresses
- Overtemperature ALERT Pin with Programmable Trip Values
- Shutdown Mode for Battery Power Saving
- One-Shot Conversion Mode
- High Accuracy: ±0.25°C (typ) from 0°C to +70°C, ±0.5°C (typ) from –20°C to +85°C, ±1°C (typ) from –55°C to +125°C
- 12-Bit Resolution (0.0625°C)
- No External Components Required for Temperature Sensing
- SMBus and Two-Wire Interface Compatibility
Applications
- Server and Computer Thermal Management
- Telecommunication Equipment
- Office Machines
- Video Game Consoles
- Set-Top Boxes
- Power Supply and Battery Thermal Protection
- Thermostat Control
- Environmental Monitoring and HVAC
- Electrical Motor Driver Thermal Protection
Q & A
- What is the operating temperature range of the TMP75C?
The TMP75C operates over a temperature range of –55°C to +125°C.
- What is the resolution of the TMP75C temperature sensor?
The TMP75C has a 12-bit resolution, which translates to 0.0625°C.
- What interfaces does the TMP75C support?
The TMP75C supports SMBus and two-wire serial interfaces.
- Can the TMP75C be used in battery-powered devices?
- How many devices can be connected on the same bus?
- What is the purpose of the ALERT pin on the TMP75C?
The ALERT pin is used for overtemperature alerts with programmable trip values, allowing the sensor to operate as a stand-alone thermostat or overtemperature alarm.
- What are the typical quiescent current values for the TMP75C?
- Is the TMP75C compatible with other temperature sensors?
- What are some common applications of the TMP75C?
- Does the TMP75C require external components for temperature sensing?
