Si705x Digital Temperature Sensors with I2C Interface
The Silicon Labs Si705x digital temperature sensors offer industry-leading low power consumption and high accuracy across the entire operating voltage and temperature range. These monolithic CMOS ICs feature a band-gap temperature sensor element, an analog-to-digital converter with up to 14-bit resolution, signal processing, calibration data, and an I2C interface. The patented use of novel signal processing and analog design enables the sensors to maintain their accuracy over a wide temperature and voltage range, while consuming little current.
The Si705x devices are fully factory-calibrated and available in a 3x3 mm DFN package. The industry-standard I2C interface can operate at up to 400 kHz. Requiring just 195nA of average current when sampled once per second, the Si705x can operate for several years with just a single coin cell battery.
Measuring Temperature Accurately with Semiconductor Sensors
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Features
- High Accuracy Temperature Sensors
- Si7051: ± 0.1 ºC (max) 3x3 mm
- Si7053: ± 0.3 ºC (max) 3x3 mm
- Si7054: ± 0.4 ºC (max) 3x3 mm
- Si7055: ± 0.5 ºC (max) 3x3 mm
- Si7050: ± 1.0 ºC (max) 3x3 mm
- Si7057: ± 0.35 ºC (max) 2x2 mm
- Si7058: ± 0.5 ºC (max) 2x2 mm
- Si7059: ± 1.0 ºC (max) 2x2 mm
- Si7051: ± 0.1 ºC (max) 3x3 mm
- Wide operating voltage (1.62V to 1.98V or 1.9V to 3.6 V)
- -40 to +125 ºC operating range
- Accuracy maintained over the entire operating temperature and voltage range
- Low Power Consumption
- 195 nA average current @ 1 Hz sample rate
- 14-bit resolution
- Factory calibrated
- I2C interface
- 2x2 QFN or 3x3 mm DFN package
Si705x Product Matrix
| Part Number | Data Sheet | Dev KIt | Description | Temp. Accuracy typ (°C) | Temp. Accuracy max (°C) | Temperature Range (°C) | Package Type | Package Size (mm) |
|---|---|---|---|---|---|---|---|---|
|
|
Si7050-EVB | Digital I2C Temperature Sensor | ±0.5 | ±1.0 | -40 125 | DFN6 | 3x3 | |
|
|
Si7051-EVB | Digital I2C Temperature Sensor | ±0.1 | ±0.1 | 36 41 | DFN6 | 3x3 | |
|
|
Si7053-EVB | Digital I2C Temperature Sensor | ±0.2 | ±0.3 | -40 125 | DFN6 | 3x3 | |
|
|
Si7054-EVB | Digital I2C Temperature Sensor | ±0.3 | ±0.4 | -40 125 | DFN6 | 3x3 | |
|
|
Si7055-EVB | Digital I2C Temperature Sensor | ±0.4 | ±0.5 | -40 125 | DFN6 | 3x3 | |
|
|
Si7057-EVB | 1.8V Supply Digital I2C Temperature Sensor | ±0.2 | ±0.35 | -40 125 | QFN6 | 2x2 | |
|
|
Si7057-EVB | 1.8V Supply Digital I2C Temperature Sensor | ±0.25 | ±0.5 | -40 125 | QFN6 | 2x2 | |
|
|
Si7057-EVB | 1.8V Supply Digital I2C Temperature Sensor | ±0.5 | ±1.0 | -40 125 | QFN6 | 2x2 |