HS411x Datasheet

R36DS0025EU0102 Rev.1.02

Apr 28, 2022

Page 9

5.

Application Circuit

The HS411x sensor requires a 2.2µF ceramic capacitor connected to the ground on both the VRH and VT

outputs. It is also recommended to buffer the output of the relative humidity and temperature signals before

processing the analog voltage. The buffer should have a low input leakage current, < 1nA, and a low input offset

voltage, < 1mV, to ensure high signal integrity.

Figure 12. HS411x Application Circuit

6. Converting Output Signal

relative humidity and temperature is from 10% to 90%.

Each HS411x sensor is individually calibrated, so that a standard linear fitting equation can be used to obtain the

measured temperature and RH value.

Figure 13 and Figure 14 shows the RH and temperature graphically.

The relative humidity (in percent) and the temperature (in degrees Celsius) are calculated with Equation 1 and

Equation 2, respectively.

����������������������������������������������������������������[%����������������]=125∗������������������������������������������������−12.5

Equation 1

����������������������������������������������������������������������������������������[°��������]=181.25∗ ����������������������������������������−58.125

Equation 2