HPP805D033 TE Connectivity

HTM1735LF Temperature and Relative Humidity Module Suitable for direct board assembly Product free from Lead, Cr (6+), Cd and Hg Humidity calibrated within +/- 2% RH 55% RH Typical 1 to 3.6 Volt DC output for 0 to 100% RH at 5V DC supply Temperature measurement through NTC 10 k +/- 3% direct output DESCRIPTION Based on the rugged HS1101LF humidity sensor, HTM1735LF is a dedicated humidity and temperature transducer designed for OEM applications where a reliable and accurate measurement is needed. Direct interface with a micro-controller is made possible with the modules humidity linear voltage and direct NTC outputs. HTM1735LF is designed for an optimized board to board connection. FEATURES APPLICATIONS Full interchangeability Reprography High reliability and long term stability HVAC Controller Not affected by repeated condensations Ratiometric to voltage supply within the specified range PERFORMANCE SPECS MAXIMUM RATINGS Ratings Symbol Value Unit Storage Temperature Tstg -40 to 105 C Storage Humidity RHstg 0 to 100 % RH Supply Voltage (Peak) Vs 7 Vdc Humidity Operating Range RH 0 to 100 % RH Temperature Operating Range Ta -40 to 100 C Maximum Output Current (Peak) I 5 mA Peak Maximum Power Pd 20 mW HTM1735LF HPC035 K www.meas-spec.com May 2008 1/7 HTM1735LF Temperature and Relative Humidity Module ELECTRICAL CHARACTERISTICS (Ta=25C, Vs=5Vdc, R >1M unless otherwise stated) L Humidity Characteristics Symbol Min Typ Max Unit Humidity Measuring Range RH 0 100 %RH Relative Humidity Accuracy (10 to 95% RH) RH +/-3 +/-5 %RH Supply Voltage Vs 4.75 5.00 5.25 Vdc Nominal Output 55%RH (at 5Vdc) Vout 2.42 2.48 2.54 V Current Consumption Ic 2.8 4 mA Temperature Coefficient (10 to 50C) Tcc -0.05 -0.1 %RH/C Average Sensitivity from 33% to 75%RH Vout/ RH +26 mV/%RH Sink Current Capability (R = 33k) I 150 A L Recovery Time after 150 hours of condensation tr 10 s Humidity Hysteresis +/-1 %RH Humidity Resolution 0.4 %RH Long Term Stability T +/-0.5 %RH/yr (1) Time Constant (at 63% of signal, static) 33% to 75%RH 5 10 s Output Impedance Z 70 Warm Up Time t 200 ms W (1) At 2m/s air flow (Ta=25C) Temperature Characteristics Symbol Min Typ Max Unit Nominal Resistance 25C R 10 k Beta value: B25/100 3600 3730 3800 Temperature Measuring Range Ta -30 80 C Nominal Resistance Tolerance 25C R 2 3 % N Beta Value Tolerance 3 % Response Time 10 s TYPICAL PERFORMANCE CURVES HUMIDITY SENSOR Measurement Conditions HTM1735LF is specified for accurate measurements within 10 to 95 %RH. Excursion out of this range (< 10% or > 95% RH, including condensation) does not affect the reliability of HTM1735LF characteristics HTM1735LF HPC035 K www.meas-spec.com May 2008 2/7