Hope RF

HH10D

HUMIDITY SENSOR MODULE
2010-5-31

PRELIMINARY--Version: 2.0

Relative humidity sensor
Two point calibrated with capacitor
type sensor, excellent performanceFrequency output type, can beeasily integrated with user
application system
Very low power consumption
No extra components neededSummary
The HH10D relative humidity sensor module is comprised with a capacitive typehumidity sensor, a CMOS capacitor to frequency converter and an EEPROM used toholding the calibration factors. Due to the characteristics of capacitor type humiditysensor, the system can respond to humidity change very fast. Each sensor is calibrated
twice at two different accurate humidity chambers, two unique sensor related
coefficients are stored onto the EEPROM on the module. The data is used forhumidity calculation.

FEATURES

Relative humidity sensor
Two point calibrated with capacitor type sensor, excellent performanceFrequency output type, can be easily integrated with user application system
Very low power consumption
No extra components neededApplications- HVAC- Automotive- Consumer Goods- Weather Stations- Dehumidifiers- Humidifiers- Test & measurement- Data Logging- Automation- White Goods- Medical1Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

Hope RF

HH10D

HUMIDITY SENSOR MODULE
2010-5-31

PRELIMINARY

Version: 2.0

Circuit Diagram

Application Circuit

2
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

Hope RF

HH10D

HUMIDITY SENSOR MODULE
2010-5-31

Version: 2.0

PRELIMINARY

Sensor Performance SpecificationParametersResolution
Accuracy
Repeatability
Uncertainty
Range
Response TimeHysterisLong Term Stability
Interchangeability

Conditions

Min Typ Max Units
0.3 0.08 0.05 %
3%
-0.3
0.3 %
2%
099 %
8S
1%-0.50.5 %Fully Interchangeable

HH10D Humidity Module Characteristic
Parameter
humidity range
accuraccy
temperature range
working voltage

min1-3-102.7

stability versus time
power consumption
Output Frequency Range

120
5.0nominal

31%
150
6.5max99+3+603.3
180
10unit%%CV
per yearuAKHZ

Calculation
In order to read out the correct humidity, 4 calibration factors need to be read out
from the EEPROM at address of 10 and 11,12 and 13 for sensitivity, offset.
Once the frequency output from the sensor is measured, then the correct
humidity value can be calculated in the following method:

HH10D Humidity Calculation Algorithm
Data Definition
eeprom address
sensitivity
Sens(2byte value)
10Offset
2 byte value
12RH(%)=(offset-Soh)*sens/2^12* RH(%) linear humidity value* RH_corr temperature compensated humidity value* Soh is the measured frequency value at Fout port
 the eeprom physical address is fixed to 01.

3
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com

Hope RF

HH10D

HUMIDITY SENSOR MODULE
2010-5-31

PRELIMINARY

Version: 2.0

Module PCB Layout:

L：24mm
W：8mm
Pin Pitch：2.54mm

HOPE MICROELECTRONICS CO.,LTD
Add:4/F, Block B3, East Industrial Area,
Huaqiaocheng, Shenzhen, Guangdong,
China
Tel: 86-755-82973805
Fax: 86-755-82973550
Email: sales@hoperf.com
trade@hoperf.com
Website: http://www.hoperf.com
http://www.hoperf.cn
http://hoperf.en.alibaba.com

This document may contain preliminary information and is subject tochange by Hope Microelectronics without notice. HopeMicroelectronics assumes no responsibility or liability for any use of
the information contained herein. Nothing in this document shall
operate as an express or implied license or indemnity under theintellectual property rights of Hope Microelectronics or third parties.
The products described in this document are not intended for use in
implantation or other direct life support applications wheremalfunction may result in the direct physical harm or injury topersons. NO WARRANTIES OF ANY KIND, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MECHANTABILITY
OR FITNESS FOR A ARTICULAR PURPOSE, ARE OFFERED IN
THIS DOCUMENT.
©2006, HOPE MICROELECTRONICS CO.,LTD. All rights reserved.

4
Tel: +86-755-82973805 Fax: +86-755-82973550 E-mail: sales@hoperf.com http://www.hoperf.com