VSOP38336 Datasheet, PDF (1/9 Pages) Vishay Siliconix – Preamplifier Circuit for IR Remote Control

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VSOP383..
Vishay Semiconductors
Preamplifier Circuit for IR Remote Control
(valid July 2016 onwards)
22906
MECHANICAL DATA
Pinning:
1, 4, 5 = N.C., 2 = V_S, 3 = OUT, 6, 8 = GND, 7 = IN
FEATURES
• Narrow bandpassfilter for all common carrier
frequencies
• High immunity against DC light
• Intelligent AGC to suppress disturbance from
fluorescent lamps and CRTs
• Low power consumption
• Wide supply voltage range
• High immunity against ripple on the supply voltage
• Output active low
• IC manufactured in CMOS technology
• Small QFN package with 2 mm width
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
DESCRIPTION
The VSOP383.. is designed for use in an IR receiver
application together with a photo pin diode. It is a
sophisticated receiver concept that is very sensitive to data
signals and compatible with the most common data formats
for IR remote control. On the other hand it is immune to DC
current caused by DC light sources such as tungsten bulbs.
The disturbance signal of fluorescent lamps is suppressed;
there are no unwanted pulses at the output.
PARTS TABLE
AGC
Carrier
frequency
36 kHz
38 kHz
Package
Pinning
Dimensions (mm)
Mounting
Application
Best remote control code
NOISY ENVIRONMENTS AND SHORT BURSTS (AGC3)
VSOP38336 ⁽¹⁾
VSOP38338 ^(2)(3)(4)(5)
VSOP
1, 4, 5 = N.C., 2 = V_S, 3 = OUT, 6, 8 = GND, 7 = IN
2.0 W x 2.0 H x 0.76 D
SMD
Remote control
(1) _MCIR (2) _Mitsubishi (3) _{RECS-80 Code} (4) _r-map (5) _{XMP-1, XMP-2}
BLOCK DIAGRAM (simplified)
Bias
Input, from
photodiode
21536-2
Controlled
gain
amplifier
Automatic
threshold _Inte-
control _grator
Band-
pass-
filter
Automatic
gain
control
33 kΩ
+ V_S
Output,
to μC
GND
Vishay recommends using a photodiode with at least
2.3 mm² area. The connection between the photodiode and
pin 7 should be kept as short as possible and carefully
shielded to prevent noise coupling.
APPLICATION CIRCUIT
100 Ω
V_S = 2.5 V
to 5.5 V
V_S
VSOP383..
IN
OUT
GND
0.22 μF
Microcontroller
or other logic
to decode the
IR signal
0V
The RC filter is optional to improve the EOS robustness
and the immunity to supply voltage ripple. We recommend
to keep the distance between the photodiode and the input
of the VSOP383.. as short as possible.
21537-4
Rev. 1.1, 17-May-16
1
Document Number: 82748
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000