RPM7240-H8R Rohm Semiconductor, RPM7240-H8R Datasheet - Page 22
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RPM7240-H8R
Manufacturer Part Number
RPM7240-H8R
Description
Infrared Receivers REMOTE CTRL 40.0KHZ
Manufacturer
Rohm Semiconductor
Specifications of RPM7240-H8R
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
• 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.