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RPM872-H7 Dataheets PDF



Part Number RPM872-H7
Manufacturers Rohm
Logo Rohm
Description IrDA infrared communication module
Datasheet RPM872-H7 DatasheetRPM872-H7 Datasheet (PDF)

RPM872-H7 Photo Link Module IrDA infrared communication module RPM872-H7 RPM872-H7 is an infrared communication module for IrDA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, and waveform shaping LSI are all integrated into one single package. This module is designed for low power consumption. The very small package makes it a perfect fit for mobile devices. zFeatures 1) Applied to IrDA Ver. 1.2. (Low Power) 2) Designed for low power consumption at waiting mode (75µA). 3) Low operati.

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RPM872-H7 Photo Link Module IrDA infrared communication module RPM872-H7 RPM872-H7 is an infrared communication module for IrDA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, and waveform shaping LSI are all integrated into one single package. This module is designed for low power consumption. The very small package makes it a perfect fit for mobile devices. zFeatures 1) Applied to IrDA Ver. 1.2. (Low Power) 2) Designed for low power consumption at waiting mode (75µA). 3) Low operating voltage VCC=2.0V to 3.6V VIO=1.5V to 3.6V VLED=2.6V to 5.5V 4) Small package. 5) Power down function. zApplications Cellular phones, PDA, Digital still camera, Handy terminals, and other portable equipments. zAbsolute maximum ratings (Ta=25°C) Parameter Supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 7.0 100 −20 to +85 −30 to +100 Unit V mW ˚C ˚C zRecommended operating conditions (Ta=25°C) Parameter Supply voltage Symbol VCC VLEDA VIO Min. 2.0 2.6 1.5 Typ. 3.0 3.0 3.0 Max. 3.6 5.5 VCC Unit V V V Rev.B 1/6 RPM872-H7 Photo Link Module zBlock diagram and application circuit AMP GND 1 VIO VIO AMP 2 VCC VCC AMP 3 GND GND C1 4 POWER DOWN PWDOWN PWDOWN 5 RXD RXD 6 7 TXD TXD LEDA (LEDVCC) 8 VCC(3pin) and VLEDA(8pin) can be used on either common power source or different one. Rev.B 2/6 RPM872-H7 Photo Link Module zTerminal description Pin No 1, 4 Terminal GND Circuit Function GND Pin1 and Pin4 must be connected to the ground. VIO Supply voltage for I/O pins (PWDOWN, RXD, TXD) 2 VIO 3 VCC VCC Supply voltage for Transceiver circuits. For preventing from infection, connect a capacitor between VCC(3pin) and GND(4pin). VIO Power-down Control Terminal H : POWERDOWN MODE L : OPERATING MODE CMOS logic level input When input is H, it will stop the receiving circuit, Pin-PD current and transmitting LED operation. 5 PWDOWN VIO PWDOWN 6 300k RXD VIO Receiving Data Output Terminal CMOS logic level output When PWDOWN (5pin) = H, the RXD output will be pulled up to VIO at approximately 300kΩ. VIO Transmitting Data Input Terminal 7 TXD 600k H : LED (PWDOWN = L) CMOS logic level input Holding TXD = "H"status, LED will be turn off approximately 48µs. LED ANODE Terminal LED 8 LEDA Other power source can be used difference between LEDVCC and VCC. This can be connected to battery kinds of unregulated voltage source by internal constant current driver. − Shield Case Connect to Ground. Rev.B 3/6 RPM872-H7 Photo Link Module zElectrical characteristics (Unless otherwise noted, VCC=3V, VLEDA=3V, VIO=3V, Ta=25°C) Parameter Consumption Current 1 Consumption Current 2 Transmission rate PWDOWN INPUT High Voltage PWDOWN INPUT Low Voltage PWDOWN INPUT High Current PWDOWN INPUT Low Current Symbol ICC1 ICC2 Min. − − 2.4 2/3∗VIO 1.2 0 −1.0 −1.0 Typ. 75 0.01 − − − 0 0 Max. 99 0.2 115.2 VIO Unit µA µA kbps V Conditions VPWDOWN = 0V. At no input light VPWDOWN = VIO. At no input light VPDH VIO = 1.8 to 3.6 [V] VIO = 1.5 to 1.8 [V] VPDL IPDH IPDL 1/3∗VIO VIO−1.2 1.0 1.0 V µA µA VIO = 1.8 to 3.6 [V] VIO = 1.5 to 1.8 [V] PWDOWN = VIO [V] PWDOWN = 0 [V] TXD INPUT High Voltage VTXH 2/3∗VIO 1.2 − − 5 0 30.5 VIO 1/3∗VIO VIO−1.2 10 1.0 − V VIO = 1.8 to 3.6 [V] VIO = 1.5 to 1.8 [V] TXD INPUT Low Voltage TXD INPUT High Current TXD INPUT Low Current LED ANODE Current VTXL ITXH ITXL ILEDA 0 2.5 −1.0 − VIO−0.4 0 − − 1.5 − V µA µA mA VIO = 1.8 to 3.6 [V] VIO = 1.5 to 1.8 [V] TXD = VIO [V] TXD = 0 [V] RXD OUTPUT High Voltage RXD OUTPUT Low Voltage RXD OUTPUT Rise Time RXD OUTPUT Fall Time RXD OUTPUT Pulse Width Receiver Latency Time VRXH VRXL tRR tFR twRXD tRT − − 35 35 2.3 100 VIO 0.4 − − 4.2 200 V V ns ns µs µs IRXH = −200µA IRXL = 200µA CL = 15pF CL = 15pF CL = 15pF, 2.4 to 115.2kbps zOptical characteristics (Unless otherwise noted, VCC=3V, VLEDA=3V, VIO=3V, Ta=25°C) Parameter Peak wave length Intensity 1 Half-Angle Optical pulse width Rise time / Fall time Optical over shoot Edge jitter Irradiance in angular INPUT Half-Angular Maximum Emitting Time Symbol λP IE1 θL / 2 TWLED Tr / Tf Min. 850 4.0 − 1.42 − − −40 0.0068 ±15 16 Typ. 870 10 ±18 1.63 − − − − − 48 Max. 900 26 ±30 2.02 100 25 40 500 − 120 Unit nm mW / Sr deg µs ns % ns Conditions −15˚ ≤ θL ≤ 15˚ TXD=1.63µs pulse input 10% to 90% Tj Ee θD / 2 TLEDmax mW / cm2 −15˚ ≤ θL ≤ 15˚ deg µs TXD=VIO 1.This product is not designed for protection against radioactive rays. 2.This product dose not include laser transmitter. 3.This product includes one pin photo diode. 4.This product dose not include optical load. Rev.B 4/6 RPM872-H7 Photo Link Module zTiming chart (Emitting side) TXD (7pin) less than 48 µs (emitting) more than 48 µs (emitting) (emitting) Internal LED (Light output) approximately 48 µs (Detecting side) Light input less than 2.3 µs more than 2.3 µs RXD (6pin) pull up to VIO at approximately 300kΩ approximately 2.3 µs ap.


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