Datasheet

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2
EEH210
3. sensor PerFormance
EEH210 is a relative humidity sensor and temperature sensor with band gap circuit, it contains oscillator, A/D convertor,
regulator, D/A convertor, NVM, digital processing unit and calibration circuit.
3.1. relative humiDity sensor
PARAMETER CONDITION MIN TYP MAX UNITS
Resolution
1)
12 bit 0.04 % RH
8 bit 0.7 % RH
Accuracy Tolerance
2)
typ ±2.0 % RH
Repeatability 12 bit ±0.1 % RH
Hysteresis ±1 % RH
Response Time
3)
10 sec
Operating Range extended
4)
0 100 % RH
Long Term Drift
5)
0.5 % RH/yr
Table 1: Relative Humidity Sensor
1. Default resolution is 14 bit (temperature) / 12 bit (humidity). It can be reduced to 12/8 bit, 11/11 bit or 13/10 bit by command.
2. Accuracies are tested at Outgoing Quality Control at 25 °C and 5.0 V. Values exclude hysteresis and long term drift and are applicable to non-condensing environments only.
3. Time for achieving 63 % of a step function, valid at 25 °C and 1m/s airflow.
4. Standard operating range: 0-80 % RH, beyond this limit sensor may read a reversible offset with slow kinetics (+3 % RH after 60h at humidity >80 % RH).
5. Value may be higher in environments with vaporized solvents, out-gassing tapes, adhesives, packaging materials, etc. For more details please refer to Handling Instructions.
Figure 3: Typical and maximal tolerance at 25 °C for relative humidity.
3.2. temPerature sensor
PARAMETER CONDITION MIN TYP MAX UNITS
Resolution
1)
14 bit 0.01 °C
12 bit 0.04 °C
Accuracy Tolerance 14 bit ±0.3 °C
Repeatability 12 bit ±0.1 °C
Response Time
2)
30(TBD) sec
Operating Range extended
3)
-40 125 °C
Long Term Drift 0.05 °C/yr
Table 2: Temperature Sensor
1. Default resolution is 14 bit (temperature) / 12 bit (humidity). It can be reduced to 12/8 bit, 11/11 bit or 13/10 bit by command.
2. Response time depends on heat conductivity of sensor substrate.
3. Standard operating range: -30 ~ +85 °C, exposure to beyond this normal operating range for extended periods may affect the device reliability.