RPM7137-H9R Rohm Semiconductor, RPM7137-H9R Datasheet - Page 17

• Manufacturer Part Number: RPM7137-H9R
• Description: Infrared Receivers REMOTE CTRL 36.7KHZ
• Manufacturer: Rohm Semiconductor

Specifications of RPM7137-H9R

• Carrier Frequency: 36.7 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: 4.5 V
• Output Current: 2 mA
• Operating Voltage: 4.5 V to 5.5 V
• Supply Current: 0.95 mA
• Maximum Operating Temperature: + 75 C
• Minimum Operating Temperature: - 10 C
• Package / Case: RSIP-A3
• Sensing Distance: 15m
• B.p.f. Center Frequency: 36.7kHz
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 1.5mA
• 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

5. Precautions for Designing Transmitter Side
1) Transmitter
Remote Control Receiver Module
2) Transmission Format
«Transmitter circuit example»
• Leader Pulse
Precautions for Transmission Frequency
Battery
The Remote Control Receiver Module covers a wide input range, and automatically makes
receiving sensitivity by using leader pulses. The pulse immediately after the start of input
may fluctuate (i.e., the receiving pulse width of output may be wider than the transmission
pulse width) if there is no leader pulse.
Check that the subcarrier frequency of the transmitter coincides with the center frequency
of the Remote Control Receiver Module, or otherwise the effective distance may be
reduced or no receiving may be possible.
Sig
100µ
Fig. 13
Necessary time for
sensitivity stabilization
LED current
LED
R
Fig. 14 Automatic Sensitivity Adjustment
15
The electrolytic capacitor C provides the LED
current.
The resister R is used to set the forward current
of the LED and adjusts the optical output power
of the transmitter.
The LED is used usually 5mm in diameter and of
high-intensity type.
(Optical wavelength (λ)=940 or 950nm)
Signal
Binary slice level