CHT8315 is a low voltage digital humidity and temperature sensor with ±3.0%RH(Max.) accuracy for humidity and ±0.5℃(Max.) accuracy for temperature. Humidity and Temperature data can be read out directly via digital interface by MCU, Bluetooth Chip or Soc chip. The digital interface is compatible with SMBus and I2C protocol. Also it supports communication with fast speed (up to 400kHz) and high speed (up to 3.4MHz) for I2C protocol.
Main features:
- Operation Voltage: 1.35V to 5.5V
- Average Operating Current: 1.0uA (Typ.)@ 3.3V, 1Con/s for Both temperature and humidity Conversion
- Standby Current: 35nA(Typ.), 60nA (Max.)
- Temperature Accuracy with calibration:
±0.5℃(Max.) from 0℃ to 100℃
±1.0℃(Max.) from -40℃ to 125℃
- Humidity Accuracy with calibration:
±3.0%RH(Max.) at 50%RH
±5.0%RH(Max.) from 20%RH to 80%RH
- Digital Interface compatible with SMBus and I2C, support:
Up to 4 different slave addresses by setting AD0 pin
Packet Error Checking feature to improve communication reliability and robustness
Speed up to 3.4MHz
SMBus timeout feature
SMBus Alert Response Alert (ARA)
SMBus General Call
- Programmable High/Low Limit Alert for Temperature and/or Humidity
- Supports One shot or continuous measurement
- Automatically switched to fastest measurement mode once alert is trigged
- Temperature Range: -40℃ to 125 ℃
- Humidity Range: 0%RH to 100%RH
