
Description Package Dimensions
The MIM-R1AA38-1 series are 37.9 KHZ miniaturized
infrared receivers for remote control and other
appplications requiring improved ambient light rejection.
The separate PIN diode and preamplifier IC are
assembled on a single leadframe.
The epoxy package contains a special IR filter.
This module has excellent performance even in disturbed
ambient light applications and provides protection
against uncontrolled output pulses.
MIM-R1AA38-1
Features
l Photo detector and preamplifier in one package
unit : mm
l Internal filter for PCM frequency
l High immunity against ambient light
l Improved shielding against electric field disturbance
l 5-Volt supply voltage; low power consumption
l TTL and CMOS compatibility
BLOCK DIAGRAM
10±0.3
0.65
30.6±0.52
Vout
2.54
GND
5.08
Vcc
Notes :
1. Tolerance is ± 0.25 mm (.010") unless otherwise noted.
2. Lead spacing is measured where the leads emerge from the package.
CENTER OF SENSOR
0.8max.
0.5±0.05
1.4±0.3
0.4±0.05
4±0.3
5.8±0.3
V
TRAP BPF
Unity Opto Technology Co., Ltd.
TRIMMIN
GND
07/26/2000
P1

Absolute Maximum Ratings
Vcc=+5.0V ; under no signal
ON/OFF pulse width satisfied from 20 cm to detection limit
Item Symbol Ratings Unit Remark
Supply voltage V
Operating temperature T
Storage temperature T
Soldering temperature T
Power Dissipation
P
D
5.8 V
-10 ~ + 60 °C
-20 ~ + 75 °C
260 °C Maximum 5 seconds
17.5
mW
Electro-optical characteristics (Vcc=5V)
Parameter Symbol Min. Typ. Max. Unit Remarks
Current consumption Icc 5.0 mA Under no signal
Response wavelength
Tuning frequency
p
f
940 nm
0
37.9
KH
Z
Output form - - - - - active low output - - - - -
H level output voltage V0h 4.2 V
L level output voltage V0l 0.5 V
H level output pulse width Twh 400 800
L level output pulse width Twl 400 800
Distance between emitter &detector
L 10.0 m Note 1
s
s
Half angle ±16 ±55 deg Horizonal direction
Test Method
A. Standard Transmitter
carrier frequency f
duty 50%
Unity Opto Technology Co., Ltd.
0
600µs
Fig 1. Burst Wave
20cm
Transmitter
Duty 50%
Ω
10k
Fig 2. Standard Transmitter Measurement
10kΩ
+5v
V
Oscilloscope
07/26/2000
P2

B. Detection Length Test
C. Pulse Width Test
Transmitter output
Transmitter output
DUT output pulse
600µs
Twl
600µs
V
out
D.U.T
θ: indicates horizontal and vertical directions
L
V0h
V0l
Twh
CHARACTERISTIC CURVES (TA=25°C)
2.8
2.7
2.6
2.4
2.2
Supply Current Icc (mA)
2.0
2 3 4 5
Supply Voltage Vcc (V)
6
7 8
SUPPLY VOLTAGE vs. SUPPLY CURRENT
NOTE 1. Distance between emitter & detector specifies maximum distance that output wave form satisfies
the standard under the conditions below against the standerd transmitter.
(1)Measuring place ………Indoor without extreme reflection of light.
(2)Ambient light source… Detecting surface illumination shall be 200±50Lux under ordinary
hite fluorescense lamp of no high frequency lighting.
(3)Standard transmitter … Burst wave indicated in Fig 1. of standard transmitter
shall be arranged to 50mVp-p under the measuring circuit specified in Fig 2.
900
s)
µ
(
800
PW
700
600
Output Pulse Width t
500
400
0.1
INPUT LEVEL vs.OUTPUT PULSE WIDTH
INPUT LEVEL vs.OUTPUT PULSE WIDTH
Burst length * 600µs, cycle = 1.2ms
tpw: Average value of output from start
of signal input to 60th pulse
Input Level VIN (mV
1 10 100
Input Level (mV
)
P-P
p-p
1000
)
Unity Opto Technology Co., Ltd.
07/26/2000
P3