RPM871-E4 Rohm Semiconductor, RPM871-E4 Datasheet
RPM871-E4
Specifications of RPM871-E4
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RPM871-E4 Summary of contents
Page 1
... IrDA Infrared communication Module RPM871 RPM871 is an infrared communication module for IrDA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, LSI are all integrated into a single package. This module is designed with power down function and low current consumption at stand-by mode. The ultra small package makes it a perfect fit for mobile devices. ...
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... Photo Link Module Block diagram and application circuit GND GND PWDOWN POWER DOWN RXD TXD LEDA LED DRIVER V (3pin) and VLEDA (8pin) can be used on CC either common power source or different one. RPM871 V CC GND C1 PWDOWN RXD TXD R1 (LEDV ) CC Rev.B 2/7 ...
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... H : LED (PWDOWN=L) CMOS Logic Level Input Holding TXD="H" status, LED will be turn off approximately 45µs. 200K LED ANODE Terminal Other power source can be used LED difference between LEDV LED current depends on LED load resistance value. RPM871 Function (3pin) and and Rev.B ...
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... RPM871 =2.8V 25°C) CC Conditions Waiting mode At no input light PWDOWN PIN High At no input light V V PWDOWN=V [V] CC PWDOWN=0 [ TXD=V [V] CC TXD=0 [V] R1=7.5 [Ω] V IRXH=−50µA V IRXL=200µ ...
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... Link distance : d[cm] (Including LED’s distribution within ±15deg) R1=T × (VLEDV −1.45 −3.5 [Ω] CC ILED=Duty × (VLEDVCC−1.36) / (R1+2.5) [A] Duty : LED duty at emitting T : 17300 (vs. RPM871), 29400 (vs. ver1.0) ∗ Please set ILED / Duty < 200[mA] more than 45µs (emitting) approximately 45µs more than 2.3µs approximately 2.3µs Notice Bigger capacitance is recommended with much noise from power supply More than 60cm distance, more than 4[µ ...
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... To get maximum potential from RPM871, please keep in mind following instruction. • The line of RXD (6pin) should be connected at backside via through hole close to RPM871 pin lead. Better not to be close to photo diode side (1pin). ⇒This is to minimize feedback supplied to photo diode from RXD. ...
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... Photo Link Module External dimensions (Unit : mm) 1 7.6 5.6 R1.1 3.8 Pin PD LED 1 0.37 ±0.10 0.95 P0.95 × 7=6.65 RSLP8 R1.0 0.78 0.76 8 RPM871 Rev.B 7/7 ...
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Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...