RPM7240-H4R Rohm Semiconductor, RPM7240-H4R Datasheet - Page 12

• Manufacturer Part Number: RPM7240-H4R
• Description: Infrared Receivers REMOTE CTRL 40.0KHZ
• Manufacturer: Rohm Semiconductor

Specifications of RPM7240-H4R

• Carrier Frequency: 40 KHz
• Transmission Distance: 15 m
• Viewing Angle: 45 deg, 35 deg
• High Level Pulse Width: 800 us
• Low Level Pulse Width: 800 us
• Minimum High Level Output Voltage: 2.5 V
• Output Current: 2 mA
• Operating Voltage: 2.7 V to 3.6 V
• Supply Current: 300 uA
• Maximum Operating Temperature: + 75 C
• Minimum Operating Temperature: - 10 C
• Package / Case: RSIP-A3
• Sensing Distance: 15m
• B.p.f. Center Frequency: 40.0kHz
• Voltage - Supply: 2.7 V ~ 3.6 V
• Current - Supply: 500µA
• Orientation: Top View
• Mounting Type: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Remote Control Receiver Module and Data Communication
1) Structure of Remote Control Receiver Module
2) Remote Control System Signal Flow
Condenser lens
(1)
The Remote Control Receiver Module receives an optical signal from the Remote Control Unit
and changes the signal into an electric signal.
Fig. 3 Structure of RPM7100-Hx/RPM7200-Hx
Electric signal generation
Power-ON code
Remote Control Unit
(1)
Holder casing
Press the Power
Basic Knowledge of Remote Control/Remote Control Receiver Module and Data Communication
ON button.
Mold resin
Infrared
LED
Lead frame
Photodiode
Signal processing IC
(2)
Receiver Module
Remote Control
Electric signal
(
10
RPM7100-Hx
RPM7200-Hx
The photodiode and the signal processing IC
are die-bonded to the metal lead frame. Then
gold wires are bonded for necessary wiring.
The parts are sealed with mold resin to shut
off visible optical noise, and the whole
structure except the condenser lens is covered
with a metal shield casing.
)
LED turns ON (lit) at high level
(3)
Optical signal
Subcarrier
Microcontroller
(Ex. 36.7Hz, 38kHz, 40kHz)
The Power-ON code
signal is mixed with
the subcarrier.
Instructions to
electrical set