OS-1838 INFRARED RECEIVER MODULE Description The OS-1838 is miniaturized infrared receivers for remote control and other applications requiring improved ambient light rejection. The separate PIN diode and preamplifier IC are assembled on a single leadframe. The epoxy package contains a special IR filter. This module has excellent performance even in disturbed ambient light applications and provides protection against uncontrolled output pulses. Features • Photo detector and preamplifier in one package .
OS-1838 Electrical And Optical Characteristics Parameter Ratings Symbol Min. Typ. Max. Unit Supply Voltage V 2.7 -- 5.5 V Supply Current Icc — 0.35 0.6 mA L0 16 — L35 12 — — B.P.F Center Frequency fo — 38 — KHz Peak Wavelength λp — 940 — nm Half Angle + θ- — 35 — deg High Level Pulse Width TH 450 600 750 µS Low Level Pulse Width TL 450 600 750 µS High Level Output Voltage VH 4.5 — — V Low Level Output Voltage VL — — 0.
Test Method OS-1838 B.Detection Length Test A.Standard Transmitter Transmitter Output Vcc 600us Standard Transmitter 600us D.U.T GND Vout Vout 20cm >10k Oscilloscope 5.0± 0.1V + 10uF Standard Transmitter 100k Vout Oscilloscope C.Pulse Width Test Transmitter Output 600us 600us D.U.
OS-1838 Package Dimensions: ± 0 .5 5.4 ± 0 .5 7.0 ±0 .5 ø4.0 ± 0 .6 4.5 ± 0 .5 2.6 22.0 ± 1.0 ± 0 .0 5 2.54 ± 0 .0 5 0.58 ± 0 .0 5 NOTES: 1.All dimensions are in millimeters (inches). 2.Tolerance is ±0.30mm (0.012’’) unless otherwise specified. 3.Specifications are subject to change without notice.
Electrical And Optical Curves(Ta=25 OS-1838 ) Fig.2 Relative Transmission Distance Vs. Direction Fig.1 Relative Spectral Sensitivity vs. Wavelength (%) 1.2 Relative Transmission Distance (%) 100 Relative Responsitibity 1.0 0.8 0.6 0.4 0.2 0 750 850 950 60 40 20 0 1150 (nm) 1050 80 -60 -40 -20 Angle Wavelength Fig.3 Frequency Dependence of Responsivity 1.0 (mA) 2.0 0.8 1.6 0 20 40 60 80 (deg) Fig.4 Supply Current vs. Ambient Temperature 1.4 Supply Current Rel.
