BRIGHT LED ELECTRONICS CORP.
SINCE 1981
BRM-1420-2
INFRARED RECEIVER MODULE
●
Description
1. The BRM-1420-2 is miniaturized infrared receivers
for remote control and other applications requiring
improved ambient light rejection.
2. The separate PIN diode and preamplifier IC are
assembled on a single leadframe.
3. The epoxy package contains a special IR filter.
4. This module has excellent performance even in
disturbed ambient light applications and provides
protection against uncontrolled output pulses.
●
Package Dimensions:
●
Features
1.
2.
3.
4.
5.
6.
7.
Photo detector and preamplifier in one package .
Internal filter for PCM frequency.
High immunity against ambient light.
Improved shielding against electric field disturbance.
3.0V or 5.0V supply voltage; low power consumption.
TTL and CMOS compatibility.
Suitable transmission code:NEC code,RC5 code.
NOTES:
1.All dimensions are in millimeters (inches).
2.Tolerance is ±0.10mm (0.004’’) unless otherwise specified.
3.Specifications are subject to change without notice.
●
Applications:
1. It can be used for TVs、VTRs、audio equipment
air conditioners、 car stereo radio、toys、 home
computers and all other equipment requiring remote
control.
●
BLOCK DIAGRAM
Vcc
Vout
Limiter
B.P.F
PD
ABLC
Demodulator
Preamp
Amp
Integrator
Comparator
GND
Ver: 1.0 Page: 1of 5
BRIGHT LED ELECTRONICS CORP.
SINCE 1981
BRM-1420-2
●
Absolute Maximum Ratings
(Ta=25℃)
Parameter
Supply Voltage
Symbol
Vcc
Ratings
2.7 ~ 5.5
-30~+65
Unit
V
℃
℃
℃
Notice
—
Operating Temperature
Topr
—
Storage Temperature
Tstg
-40~+85
—
4mm from mold body
less than 5 sec
Soldering Temperature
Tsol
260
●
Electrical And Optical Characteristics(Ta=25℃)
Parameter
Supply Voltage
Supply Current
Symbol
Vcc
Icc
Condition
DC voltage
No signal input
At the ray axis
Ratings
Min. Typ. Max.
2.7
—
12
6
—
—
—
Unit
V
mA
5.0
—
—
—
36.7
940
45
5.5
1.5
—
Reception Distance
L
In the range of 45°cone
—
—
—
—
m
B.P.F Center Frequency
Peak Wavelength
Half Angle
fo
λp
θ
—
—
—
Specified by the output T
H
period
within a range from 10cm to the
arrival distance (average value of 50
pulses)
Specified by the output T
L
period
within a range from 10cm to the
arrival distance (average value of 50
pulses)
10cm over the ray axis
10cm over the ray axis
KHz
nm
deg
High Level Pulse Width
T
H
400
—
800
µS
Low Level Pulse Width
T
L
400
—
800
µS
High Level Output Voltage
Low Level Output Voltage
V
H
V
L
4.5
—
—
—
—
0.5
V
V
Ver:1.0 Page: 2of 5
BRIGHT LED ELECTRONICS CORP.
SINCE 1981
BRM-1420-2
●
Application Circuit
47
Ω
Infrared
Emitting
Diode
IRM
Vcc
Out
GND
GND
+5V
47uF
>10k
Ω
uC
Fig.1 Transmitter Wave Form
Transmitter Output
D.U.T Output Pulse
V
H
T
L
T
H
V
L
600us
600us
Fig.2 Measuring Method
Measuring Method
20cm
>10k
Ω
5.0± 0.1V
Fig.3 Measuring System
+
10uF
Standard
Transmitter
Standard
Transmitter
θ
θ
Vcc
D.U.T
GND
Vout
100k
Ω
Vout
Vout
Oscilloscope
Oscilloscope
Ver:1.0 Page: 3 of 5
BRIGHT LED ELECTRONICS CORP.
SINCE 1981
BRM-1420-2
●
Electrical And Optical Curves(Ta=25℃)
Fig.4 Relative Spectral Sensitivity vs.
(%)
1.2
Fig.5 Relative Transmission Distance vs.
Direction
0
10
20
30
Wavelength
1.0
Relative Responsitibity
0.8
1.0
40
0.6
0.9
0.8
50
60
70
0.4
0.2
0.7
80
90
0
750
850
950
1050
1150 (nm)
0.5
0.3
0.1
0.2
0.4
0.6
Wavelength
Relative Transmission Distance
(mS)
1.0
Fig.6 Output Pulse Diagram
(mA)
2.0
1.8
Fig.7 Supply Current vs.
Ambient Temperature
0.8
on
1.6
1.4
T
on
,T
off
-Output Pulse Length
0.6
off
Supply Current
10000 (mW/cm )
2
1.2
1.0
0.8
0.6
0.4
0.4
0.2
=950nm,Optical Test Signal,Fig.8
0.2
0.0
0.1
0.0
-30
0
30
60
90 (° C)
1
10
100
1000
Irradiance
Ambient Temperature
Fig.8 Frequency Dependence of Responsivity
(m)
1.0
20
Fig.9 Arrival Distance Vs.
Ambient Temperature
0.8
16
Transmission Distance
0
0.6
12
Rel. Responsitivity
0.4
8
0.2
0
4
0.0
0.7
0
0.8
0.9
1.0
1.1
1.2
1.3
-40
-20
0
20
40
60
80
100 (° C)
Relative Frequency
Ambient Temperature
Ver: 1.0 Page: 4 of 5
BRIGHT LED ELECTRONICS CORP.
SINCE 1981
BRM-1420-2
●
Packaging Box Dimensions
●
Packaging Bag Dimensions
Notes:
1、250pcs per bag, 3Kpcs per box.
2、All dimensions are in millimeters(inches).
3、Specifications are subject to change without notice.
Ver: 1.0 Page: 5 of 5
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