VISHAY TSOP28PM1 Technical data
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TSOP28..PM1
Vishay T elefunken
Photo Modules for PCM Remote Control Systems
Available types for different carrier frequencies
Type fo Type fo
TSOP2830PM1 30 kHz TSOP2833PM1 33 kHz
TSOP2836PM1 36 kHz TSOP2837PM1 36.7 kHz
TSOP2838PM1 38 kHz TSOP2840PM1 40 kHz
TSOP2856PM1 56 kHz
Description
The TSOP28..PM1 – 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
Photo detector and preamplifier in one package
Internal filter for PCM frequency
TTL and CMOS compatibility
Output active low
Improved shielding against electrical field
disturbance
Suitable burst length ≥6 cycles/burst
Block Diagram
Input
PIN
AGC
Special Features
Small size package
Enhanced immunity against all kinds of
disturbance light
No occurrence of disturbance pulses at the
output
Short settling time after power on (<200s)
Control
Circuit
Band
Pass
Demodu-
lator
30 k
16115
2
V
S
1
OUT
3
GND
Document Number 82059
14318
www.vishay.com
1 (7)Rev. 3, 10-Oct-00
TSOP28..PM1
Su ly Current (Pin 2)
4/f
6/f
Vishay Telefunken
Absolute Maximum Ratings
T
= 25_C
amb
Parameter Test Conditions Symbol Value Unit
Supply Voltage (Pin 2) V
Supply Current (Pin 2) 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 10 s, 1 mm from case T
Basic Characteristics
T
= 25_C
amb
Parameter Test Conditions Symbol Min Typ Max Unit
Supply Current (Pin 2) VS = 5 V, Ev = 0 I
VS = 5 V, Ev = 40 klx, sunlight I
Supply Voltage (Pin 2) V
Transmission Distance Ev = 0, test signal see fig.6,
IR diode TSAL6200, IF = 300 mA
Output Voltage Low (Pin 1) IOL = 0.5 mA,Ee = 0.7 mW/m2, f = f
Irradiance (30 – 40 kHz) Pulse width tolerance:
Irradiance (56 kHz)
tpi –
test signal (see fig.6)
Irradiance E
Directivity Angle of half transmission distance ϕ
< tpo < tpi +
o
85 C) P
amb
o
,
o
SD
SH
S
d 35 m
V
OL
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 C
–25...+85 C
–25...+85 C
50 mW
260 C
0.9 1.2 1.5 mA
1.2 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
2
2
2
Application Circuit
TSAL62..
14319
www.vishay.com
2 (7)
TSOP28..PM1
2
4.7 F *)
100 *)
>10 k
+5V **)
optional
1
C
3
GND
*) recommended to suppress power supply disturbances
Document Number 82059
Rev. 3, 10-Oct-00
Suitable Data Format
The circuit of the TSOP28..PM1 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).
TSOP28..PM1
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
TSOP28..PM1 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 10 cycles is
neccessary.
• The data format should not make a continuous
signal transmission. There must be a Signal Gap T ime
(longer than 14ms) at least each 90ms
0 102030405060708090100
Some examples for such disturbance signals which
are suppressed by the TSOP28..PM1 are:
• DC light (e.g. from tungsten bulb or sunlight),
• Continuous signal at 38kHz or at any other
frequency,
• Signals from fluorescent lamps.
• 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 8101214161820
time [ms]
Figure B: Disturbance Signal from Fluorescent Lamp with Signal Gap Time of 7ms
Document Number 82059
www.vishay.com
3 (7)Rev. 3, 10-Oct-00
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