Telefunken TSOP1856RF1, TSOP1840RF1, TSOP1836RF1, TSOP1838RF1, TSOP1837RF1 Datasheet

TSOP18..RF1

Vishay Telefunken

Photo Modules for PCM Remote Control Systems

Available types for different carrier frequencies

Type fo Type fo
TSOP1830RF1 30 kHz TSOP1833RF1 33 kHz
TSOP1836RF1 36 kHz TSOP1837RF1 36.7 kHz
TSOP1838RF1 38 kHz TSOP1840RF1 40 kHz
TSOP1856RF1 56 kHz

Description

The TSOP18..RF1 – series are miniaturized receivers
for infrared remote control systems. PIN diode and
preamplifier are assembled on lead frame, the epoxy
package is designed as IR filter.
The demodulated output signal can directly be de­coded by a microprocessor. The main benefit is the
reliable function even in disturbed ambient and the
protection against uncontrolled output pulses.

Features

D

Photo detector and preamplifier in one package

D

Internal filter for PCM frequency

D

TTL and CMOS compatibility

D

Output active low

D

Improved shielding against electrical field distur­bance

D

Suitable burst length ≥6 cycles/burst

Block Diagram

Input

PIN

AGC

Special Features

D

Small size package

D

Enhanced immunity against all kinds of distur­bance light

D

No occurrence of disturbance pulses at the out­put

D

Short settling time after power on (<200ms)

Control

Circuit

Band
Pass

Demodu-

lator

30 k

16 079

3

V

S

W

1

OUT

2

GND

9612226

Document Number 82050

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1 (7)Rev. 4, 24-Jan-00

TSOP18..RF1

y()

t

4/f

t

t

6/f

Vishay Telefunken

Absolute Maximum Ratings

T

= 25_C

amb

Parameter Test Conditions Symbol Value Unit
Supply Voltage (Pin 3) V
Supply Current (Pin 3) I
Output Voltage (Pin 1) V
Output Current (Pin 1) I
Junction Temperature T
Storage Temperature Range T
Operating Temperature Range T
Power Consumption (T
Soldering Temperature t x 10 s, 1 mm from case T

Basic Characteristics

T

= 25_C

amb

Parameter Test Conditions Symbol Min Typ Max Unit

Supply Current (Pin 3) VS = 5 V, Ev = 0 I

VS = 5 V, Ev = 40 klx, sunlight I
Supply Voltage (Pin 3) V
Transmission Distance Ev = 0, test signal see fig.6,

IR diode TSAL6200, I
Output Voltage Low (Pin 1) I

Irradiance (30 – 40 kHz) Pulse width tolerance:
Irradiance (56 kHz)
Irradiance E

Directivity Angle of half transmission distance ϕ

= 0.5 mA,Ee = 0.7 mW/m2,

OSL

f = f

o

–

pi

<

o

test signal see fig.6

x 85 °C) P

amb

= 300 mA

F

<

+

po

pi

,

o

SD
SH

S

d 35 m

V

OSL

E

e min

E

e min

e max

1/2

S

S

O

O

j

stg

amb

tot
sd

–0.3...6.0 V

5 mA

–0.3...6.0 V

5 mA

100
–25...+85
–25...+85

50 mW

260

0.9 1.2 1.5 mA

1.3 mA

4.5 5.5 V

250 mV

0.3 0.5 mW/m

0.4 0.7 mW/m

30 W/m

±45 deg

°

C

°

C

°

C

°

C

2
2

2

Application Circuit

TSOP18..

TSAL62..

15905

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2 (7)

100

W

*)

3

4.7 mF *)

>10 k

W

optional

m

1

C

2

GND

*) recommended to suppress power supply disturbances

Document Number 82050

+5V

Rev. 4, 24-Jan-00

Suitable Data Format

The circuit of the TSOP18..RF1 is designed in that way
that unexpected output pulses due to noise or
disturbance signals are avoided. A bandpassfilter, an
integrator stage and an automatic gain control are
used to suppress such disturbances.
The distinguishing mark between data signal ( not
suppressed) and disturbance signal (supressed) are
carrier frequency, burst length and Signal Gap Time
(see diagram below).

TSOP18..RF1

Vishay Telefunken

Some examples for suitable data format are:
NEC Code (repetitive pulse), NEC Code (repetitive
data), Toshiba Micom Format, Sharp Code, RC5
Code, RECS–80 Code, R–2000 Code.

When a disturbance signal is applied to the
TSOP18..RF1 it can still receive the data signal.
However the sensitivity is reduced to that level that no
unexpected pulses will occure.

The data signal should fullfill the following condition:

• Carrier frequency should be close to center fre­quency of the bandpass (e.g. 38kHz).

• Burst length should be 6 cycles/burst or longer.

• After each burst a gap time of at least 9 cycles is

neccessary.

• The data format should not make a continuous
signal transmission. There must be a Signal Gap Time
(longer than 15ms) at least each 90ms (see Figure A)

0 102030405060708090100

Some examples for such disturbance signals which
are suppressed by the TSOP18..RF1 are:

• DC light (e.g. from tungsten bulb or sunlight),

• Continuous signal at 38kHz or at any other

frequency,

• Signals from fluorescent lamps ( see Figure B ).

• Continuous IR signal (e.g. 1ms burst, 2ms pause)

Signal Gap Time

time [ms]

Figure A: Data Signal (Output of IR Receiver) with a Signal Gap Time of 20ms

Signal Gap Time

0 2 4 6 8 10 12 14 16 18 20

time [ms]

Figure B: Disturbance Signal from Fluorescent Lamp with Signal Gap Time of 7ms (suppressed by TSOP18..)

Document Number 82050

www.vishay.de • FaxBack [phone]

3 (7)Rev. 4, 24-Jan-00