VSOP38336【PDF 1/8 页】IC SIGNAL CONDITIONING 36KHZ QFN

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VSOP383..

www.vishay.com

Vishay Semiconductors

Preamplifier Circuit for IR Remote Control

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

MECHANICAL DATA

Pinning:

1, 4, 5 = N.C., 2 = V S , 3 = OUT, 6, 8 = GND, 7 = IN

22529

? 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

NOISY ENVIRONMENTS AND SHORT BURSTS (AGC3)

Carrier

frequency

36 kHz

38 kHz

VSOP38336 (1)(2)

VSOP38338 (3)(4)(5)(6)

Package

Pinning

Dimensions (mm)

Mounting

Application

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

Best remote control code

(1)

MCIR

(2)

RCMM

(3)

Mitsubishi

(4)

RECS-80 Code

(5)

r-map

(6)

XMP-1, XMP-2

BLOCK DIAGRAM (Simplified)

APPLICATION CIRCUIT

+ V S

100 Ω

V S = 2.5 V

to 5.5 V

Input, from

photodiode

Bia s

Controlled

gain

amplifier

Band-

pa ss -

filter

Automatic

thre s hold

control

Inte-

grator

33 k Ω

Output,

to μC

V S

V S OP383..

OUT

0.22 μF

Microcontroller

or other logic

to decode the

Automatic

gain

control

G ND

IR s ignal

21536-2

of the V S OP383.. a s s hort a s po ss ible.

Vishay recommends using a photodiode with at least

2.3 mm 2 area. The connection between the photodiode and

pin 7 should be kept as short as possible and carefully

shielded to prevent noise coupling.

The RC filter i s optional to improve the EO S robu s tne ss

and the immunity to s upply voltage ripple. We recommend

to keep the di s tance between the photodiode and the input

21537-4

Rev. 1.4, 05-Feb-14

Document Number: 82443

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

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