The TMP275 is a ±0.5°C accurate integrated digital temperature sensor with a 12-bit analog-to-digital converter (ADC) that can operate as low as 2.7-V supply voltage and is pin- and register-compatible with the Texas Instruments LM75, TMP75, TMP75B, and TMP175 devices. This device is available in SOIC-8 and VSSOP-8 packages, and it requires no external components to sense the temperature. The TMP275 is capable of reading temperatures with a maximum resolution of 0.0625°C (12 bits) and as low as 0.5°C (9 bits), which allows the user to maximize efficiency by programming for higher resolution or faster conversion time. The device is specified over a temperature range of –40°C to 125°C.
The TMP275 device features SMBus and two-wire interface compatibility, and allows up to eight devices on the same bus with the SMBus overtemperature alert function. The factory-calibrated temperature accuracy and the noise-immune digital interface make the TMP275 the preferred solution for temperature compensation of other sensors and electronic components, without the need for additional system-level calibration or elaborate board layout for distributed temperature sensing.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TMP275 | SOIC (8) | 4.90 mm × 3.91 mm |
VSSOP (8) | 3.00 mm × 3.00 mm |
Changes from E Revision (November 2015) to F Revision
Changes from D Revision (August 2007) to E Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NO. | NAME | ||
1 | SDA | I/O | Serail data. Open-drain output; requires a pullup resistor. |
2 | SCL | I | Serial clock. Open-drain output; requires a pullpup resistor. |
3 | ALERT | O | Overtemperature alert. Open-drain output; requires a pullup resistor. |
4 | GND | — | Ground |
5 | A2 | I | Address select. Connect to GND or V+. |
6 | A1 | I | Address select. Connect to GND or V+. |
7 | A0 | I | Address select. Connect to GND or V+. |
8 | V+ | I | Supply voltage, 2.7 to 5.5 V |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Power supply, V+ | 7 | V | ||
Input voltage(2) | –0.5 | 7 | V | |
Input current | 10 | mA | ||
Operating temperature | –55 | 127 | °C | |
Junction temperature, TJ max, | 150 | °C | ||
Storage temperature, Tstg | –60 | 130 | °C |