General Description

SHT4x is a digital sensor platform for measuring relative humidity and temperature at different

accuracy classes. Its I2C interface provides several preconfigured I2C addresses while maintaining

an ultra-low power budget. The power-trimmed internal heater can be used at three heating levels

thus enabling sensor operation in demanding environments. The four-pin dual-flat-no-leads

package is suitable for surface mount technology (SMT) processing and comprises an optional onpackage

patented PTFE [1] membrane or a removable protective cover. Sensor specific calibration

certificates according to ISO17025, identifiable through unique serial number, are available.

Features

• Accuracies ΔRH = ±1.0 RH, ΔT = ±0.1 °C

• VDD = 1.08 V … 3.6 V

• Avg. current: 0.4 μA, Idle current: 80 nA

• I2C FM+, CRC checksum, multip. I2C addr.

• Patented protection options [1], PTFE

membrane and removable protective cover

• Operating range: 0 … 100 RH, −40…125 °C

• Fully functional in condensing environment

• Power heater, true NIST-traceability

• JEDEC JESD47 qualification

• Sensor-specific calibration certificate acc. to

ISO 17025 : 2017, 3-point temp. calibration