TSOP321.., TSOP323.., TSOP325.., TSOP341.., TSOP343..,

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Vishay Semiconductors

Rev. 2.2, 14-Dec-2021

3

Document Number: 82490

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

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TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

Fig. 1 - Output Active Low

Fig. 2 - Pulse Length and Sensitivity in Dark Ambient

Fig. 3 - Output Function

Fig. 4 - Output Pulse Diagram

Fig. 5 - Frequency Dependence of Responsivity

Fig. 6 - Sensitivity in Bright Ambient

Ee

T

tpi *)

t

VO

VOH

VOL

tpo

2)

t

14337

Optical Test Signal

(IR diode TSAL6200, IF = 0.4 A, N = 6 pulses, f = f0, t = 10 ms)

Output Signal

td

1)

1) 3/f

0 < td < 9/f0

2) t

pi - 4/f0 < tpo < tpi + 6/f0

*) tpi ≥ 6/f0 is recommended for optimal function

0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.1

1

10

100

1000

10 000

E

e - Irradiance (mW/m²)

Input burst length

λ = 950 nm,

optical test signal, Fig. 1

Output pulse width

20760

E e

t

VO

VOH

VOL

t

600 µs

600 µs

t = 60 ms

t on

t off

94 8134

Optical Test Signal

Output Signal, (see Fig. 4)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.1

1

10

100

1000

10 000

E

e - Irradiance (mW/m²)

20744

λ = 950 nm,

optical test signal, fig. 3

t

on

t

off

0.0

0.2

0.4

0.6

0.8

1.0

1.2

0.7

0.9

1.1

1.3

f/f0 - Relative Frequency

16925

f = f

0 ± 5 %

Δf(3 dB) = f

0/10

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0.01

0.1

1

10

100

E

e - Ambient DC Irradiance (W/m²)

Correlation with ambient light sources:

10 W/m² = 1.4 klx (std. illum. A, T = 2855 K)

10 W/m² = 8.2 klx (daylight, T = 5900 K)

Wavelength of ambient

illumination:

λ = 950 nm

20745