TSL238

HIGH-SENSITIVITY

LIGHT-TO-FREQUENCY CONVERTER

TAOS073F − OCTOBER 2007

5

The LUMENOLOGY r Company

r

r

Copyright E 2007, TAOS Inc.

www.taosinc.com

TYPICAL CHARACTERISTICS

Figure 5

NORMALIZED OUTPUT FREQUENCY

vs.

ANGULAR DISPLACEMENT

Q − Angular Displacement − °

0

0.2

0.4

0.6

0.8

1

−90

−60

−30

0

30

60

90

Angular Displacement is

Equal for Both Aspects

Figure 6

DARK FREQUENCY

vs.

FREE-AIR TEMPERATURE

−7.5

−4.5

−1.5

1.5

4.5

7.5

−25

−515

35

55

75

−6.0

−3.0

0.0

3.0

6.0

NOTE A

NOTE A: Internal offsets that result in dark frequency can be both positive and negative. The dashed line represents the case of negative offset

in which an equivalent amount of light signal is required to obtain a non-zero output frequency.