Device Overview
TMP1075DSGR is the large-reel WSON-8 orderable of Texas Instruments’ TMP1075 digital temperature sensor. It is designed as a higher-accuracy, lower-power replacement for LM75/TMP75-class devices while retaining a two-wire I2C/SMBus interface.
Key Selection Information
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TMP1075DSGR |
| Sensor type | Local digital temperature sensor |
| Measurement range | -55 °C to +125 °C for the DSG package |
| Accuracy, main guaranteed range | ±1 °C maximum from -40 °C to +110 °C |
| Accuracy, full range | ±2 °C maximum from -55 °C to +125 °C |
| Typical accuracy | ±0.25 °C typical across -55 °C to +125 °C |
| Resolution | 12 bit, 0.0625 °C per LSB |
| Interface | I2C / SMBus; supports ALERT and one-shot conversion |
| Addressing | Supports up to 32 I2C addresses depending on package/configuration |
| Supply range | 1.62 V to 5.5 V family supply range |
| Average supply current | 2.7 µA typical |
| Shutdown current | 0.37 µA typical |
| Supply current limit | 4 µA maximum listed by TI |
| Package | WSON (DSG), 8 pins, 2 mm x 2 mm |
| Manufacturer lifecycle | Active |
Engineering Selection Notes
The ±1 °C figure is not valid over the complete -55 °C to +125 °C range. TI guarantees ±1 °C from -40 °C to +110 °C and relaxes the full-range maximum error to ±2 °C.
The 12-bit output corresponds to 0.0625 °C resolution, but resolution is not the same as absolute accuracy. Firmware can report fine temperature steps while the sensor’s guaranteed absolute error remains governed by the applicable temperature range.
Low average current makes TMP1075 useful in always-on monitoring, but PCB heat flow can dominate error. Placement near regulators, processors or high-current traces can make the sensor measure local board heating rather than the intended ambient condition.
Official Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer.
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