RPM7238-H4R Rohm Semiconductor, RPM7238-H4R Datasheet - Page 13

• Manufacturer Part Number: RPM7238-H4R
• Description: Infrared Receivers REMOTE CTRL 37.9KHZ
• Manufacturer: Rohm Semiconductor

Specifications of RPM7238-H4R

• Carrier Frequency: 37.9 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: 37.9kHz
• 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

3. Block Diagram and Work of Remote Control Receiver Module
Remote Control Receiver Module
1) Block Diagram of Remote Control Receiver Module
Photodiode
(2)
(3)
Optical signal
Electric signal
IV
The level of output from the Remote Control Optical Module is low when the light is turned ON.
The microcontroller performs code discrimination
and gives a power-ON instruction.
Amplifier
Fig. 5 Block Diagram
Fig. 4
Optical signal
11
BPF
Detection
Electric signal
Comparator
The set is
turned ON.
Demodulation to
the power-ON code signal.
RPM7100-Hx/RPM7200-Hx
(The subcarrier is eliminated.)
Receiver Module
Remote Control
Work of
V
R
GND
CC
ON