TSOP956..W

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Vishay Semiconductors

Rev. 1.3, 13-Apr-2022

6

Document Number: 82863

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

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SUITABLE DATA FORMAT

This series is designed to suppress spurious output pulses

due to noise or disturbance signals. The devices can

distinguish data signals from noise due to differences in

frequency, burst length, and envelope duty cycle. The data

signal should be close to the device’s band-pass center

frequency (e.g. 38 kHz) and fulfill the conditions in the table

below.

When a data signal is applied to the product in the presence

of a disturbance, the sensitivity of the receiver is

automatically reduced by the AGC to insure that no spurious

pulses are present at the receiver’s output. Some examples

which are suppressed are:

• DC light (e.g. from tungsten bulbs sunlight)

• Continuous signals at any frequency

• Strongly or weakly modulated patterns from fluorescent

lamps with electronic ballasts (see Fig. 13 or Fig. 14)

Fig. 13 - IR Emission from Fluorescent Lamp

With Low Modulation

Fig. 14 - IR Emission from Fluorescent Lamp

With High Modulation

Note

• For data formats with short bursts please see the datasheet for TSOP953..W, TSOP955..W

16920

10

100

1000

10000

0

1

2

3

4

5

6

7

0

5

10

15

20

Axis Title

Time (ms)

16921

10

100

1000

10000

-60

-40

-20

0

20

40

0

5

10

15

20

Axis Title

Time (ms)

TSOP956..W

Minimum burst length

10 cycles/burst

Minimum gap time between bursts

≥ 13 cycles

Minimum idle period between data frames

12 ms

RC-5 code

Preferred

RC-6 code

Yes

NEC code

Preferred

r-step code 56 kHz

Yes

Sony code

No

RCA 56 kHz code

Yes

Mitsubishi code 38 kHz

Preferred

Suppression of interference from fluorescent lamps

Fig. 13 and Fig. 14