RPM871-E2A ROHM

RPM871 Photo Link Module 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. z Features 1) Applied to IrDA version 1.2. (Low Power) 2) Designed for low power consumption at waiting mode (Typ.73A). 3) Suitable for sets driven by battery due to power down control function. 4) Power supply voltage range : 2.6V to 3.6V 5) Constant LED load resistance can change transmission distance. (Approx. 20 to 60cm) z Applications Cellular phones, PDAs, etc. z Absolute maximum ratings (Ta = 25C) Parameter Symbol Limits Unit Power supply voltage VCC 0.3 to +7.0 V 1 Power dissipation Pd 150 mW Operating temperature range Topr C 20 to +85 Storage temperature range Tstg C 30 to +100 2 LED peak current IFP 200 mA 1 70mm70mm, t=1.6mm, glass epoxy mounting. Derating : 2mW/C for operation above Ta=25C 2 LED peak current<90s. ON duty<20% z Recommended operating conditions (Ta = 25C) Parameter Symbol Min. Typ. Max. Unit VCC 2.6 2.8 3.6 V Power supply voltage VLEDA 2.6 2.8 5.5 V Rev.B 1/7 RPM871 Photo Link Module z Block diagram and application circuit GND NC VCC VCC GND GND C1 PWDOWN POWER PWDOWN DOWN RXD RXD TXD TXD R1 LEDA (LEDVCC) LED DRIVER VCC (3pin) and VLEDA (8pin) can be used on either common power source or different one. Rev.B 2/7 AMP AMP AMP 8 76543 2 1