RPM7240-V4R Rohm Semiconductor, RPM7240-V4R Datasheet - Page 22
![RECEIVER REMOTE CTRL 40.0KHZ L](/photos/40/15/401559/rsip-a3_v4_sml.jpg)
RPM7240-V4R
Manufacturer Part Number
RPM7240-V4R
Description
RECEIVER REMOTE CTRL 40.0KHZ L
Manufacturer
Rohm Semiconductor
Specifications of RPM7240-V4R
Sensing Distance
15m
B.p.f. Center Frequency
40.0kHz
Voltage - Supply
2.7 V ~ 3.6 V
Current - Supply
500µA
Orientation
Side View
Mounting Type
Through Hole
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
• Vcc and Ground Pattern Designing
• Holder Grounding
The Remote Control Receiver Module is highly sensitive in order to receive an infrared signal that
is far away. Although a sufficient countermeasure against power ripples is taken, the user should
take a further countermeasure in preparation for unforeseen malfunctions.
«Good example»
Noise is reduced as
much as possible within
the digital block loop.
Fig. 22 Shield
Digital
GND
V
block
DD
Noise
Fig. 23 Countermeasure against Line Noise
Be sure to connect the holder to the ground pattern.
RPM7100-Hx Series Holderless Model
The Remote Control Receiver Module is highly
sensitive. In order to protect the influence of external
noise, ground the casing.
The installation of a grounded metal shield in the
direction of external noise is effective to avoid the
influence of the external noise.
Receiver Module
Remote Control
GND
GND
V
V
20
CC
CC
Noise
Precautions for Designing Receiver Side
There is little influence because
the common impedance is low.
Increase the occupied ground
area to lower the common
impedance.