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| Infrared Remote Control Receiver Module LTM-97 Series Features Compact package High immunity from ambient light Good performance against electric field disturbance 5 volt supply voltage and low power consumption Pin out can be changed according to customer's requirement Description The LTM-97 series are miniaturized receivers for infrared remote control systems. It is a single unit type module which incorporates a PIN diode and a receiving preamplifier IC. The demodulated output signal can directly be decoded by a microprocessor. It has excellent sensitivity and reliable function even in disturbed working environment. Device No. Device No. LTM-97AS-XX LTM-97AT-XX LTM-97BS-XX LTM-97BT-XX LTM-97CS-XX LTM-97CT-XX LTM-97DT-XX LTM-97ES-XX LTM-97ET-XX LTM-97DS-XX XX: Carrier frequencies for 33, 36, 38, 40, 56.8 kHz Package Dimensions A. LTM-97AS-XX D E T E L O S B O Detecting Window Side Top Top Top Top Top Side Side Side Side Package Dimension A B 3 Pin Out Function 2 Vcc Vcc 1 Vout Vout Gnd Gnd Vcc Gnd Gnd Vcc C D C D C D C D Vout Vcc Vout Vout Gnd B. LTM-97AT-XX 10-53 M97.p65 Page 53 2000/7/11, UE 12:11 Adobe PageMaker 6.5C/Win INFRARED PRODUCTS C. LTM-97BS/CS/DS/ES-XX D. LTM-97BT/CT/DT/ET-XX Note: 1. All dimensions are in millimeters (inches). 0.25mm (0.01") unless otherwise noted. 2. Tolerance is 3. XX: Frequency Special Forming (Option) We provide lead forming service if it's necessary. "*" Dimension can be changed according to customer's requirement A. LTM-97AS-XX# B. LTM-97AT-XX# D E T E L O S B O 10-54 M97.p65 Page 54 2000/7/11, UE 12:11 Adobe PageMaker 6.5C/Win C. LTM-97BS/CS/DS/ES-XX# D. LTM-97BT/ CT/DT/ET -XX# E. LTM-97XS-XXF Note: 1. All dimensions are in millimeters (inches). 0.25mm (0.01") unless otherwise noted. 2. Tolerance is 3. XX: Frequency D E T E L O S B O F. LTM-97XT-XXH Parameter Symbol Vcc Topr Tstg Tsd Absolute Maximum Ratings (Ta=25 ) Rating 6.0 -20 ~~ +70 -25 ~~ +85 260 Unit V Supply Voltage Operating Temperature Storage Temperature Soldering Temperature Recommended Operating Condition Parameter Supply Voltage Symbol Vcc Min 4.7 Max 5.3 Unit V 10-55 M97.p65 Page 55 2000/7/11, UE 12:11 Adobe PageMaker 6.5C/Win INFRARED PRODUCTS Block Diagram Application Circuit Electrical Characteristics Item Current Consumption Wave Length of the Max. Sensitivity Reception Distance D E T E L O S B O Symbol ICC Conditions Min 1.1 Rating Typ Max 2.5 Unit mA nm No signal input, Vcc=5V Smax 940 At the ray axis 10 L The ray receiving surface at a vertex and in relation to the ray axis: a: in the range of 30 cone b: in the range of 45 cone m 8 6 Low Level Output Voltage High Level Output Voltage VOL VOH Specified by the output tWL period within a range from 5cm to the reception distance 4.5 0.5 V V Low Level Pulse Width tWL 400 600 800 S High Level Pulse Width tWH Specified by the output tWH period within a range from 5cm to the reception distance 25-50 No outside light 400 600 800 S Noise Suppression NQ 0 Pulse Note: Detailed condition please refer to measuring method. 10-56 M97.p65 Page 56 2000/7/11, UE 12:12 Adobe PageMaker 6.5C/Win Measuring Method A. Reception distance measurement Fig. 1 Reception distance measuring condition B. Standard transmitter The transmitter whose output is adjusted up become Vo=400m Vp-p by output waveform as show in Fig. 2 and the measuring method as shown in Fig. 3 is specified as the standard transmitter. However, the infrared diode to be used for the transmitter should be p=940nm, =50nm. INFRARED PRODUCTS D E T E L O S B O Fig. 2 Output wave form Fig. 3 Measuring method 10-57 M97.p65 Page 57 2000/7/11, UE 12:12 Adobe PageMaker 6.5C/Win C. Pulse width measurement The following wave forms are transmitter output and our receiver module's output. D E T E L O S B O Fig. 4 Output pulse 10-58 M97.p65 Page 58 2000/7/11, UE 12:12 Adobe PageMaker 6.5C/Win |
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