TCS230_08 Datasheet, PDF (4/12 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – PROGRAMMABLE COLOR LIGHT-TO-FREQUENCY CONVERTER

TCS230
PROGRAMMABLE
COLOR LIGHT-TO-FREQUENCY CONVERTER
TAOS046Q − JULY 2008
Operating Characteristics at V_DD = 5 V, T_A = 25°C, S0 = H, S1 = H (unless otherwise noted)
(See Notes 5, 6, 7, 8, and 9).
PARAMETER
f_O
Output
frequency
TEST
CONDITIONS
E_e = 47.2 μW/cm²,
λ_p = 470 nm
E_e = 40.4 μW/cm²,
λ_p = 524 nm
E_e = 34.6 μW/cm²,
λ_p = 640 nm
CLEAR
PHOTODIODE
S2 = H, S3 = L
BLUE
PHOTODIODE
S2 = L, S3 = H
GREEN
PHOTODIODE
S2 = H, S3 = H
MIN TYP MAX MIN TYP MAX MIN TYP MAX
16
20 24 11.2 16.4 21.6
16
20 24
8 13.6 19.2
16
20 24
RED
PHOTODIODE
S2 = L, S3 = L
MIN TYP MAX
14
19 24
UNIT
kHz
kHz
kHz
f_D
Dark
frequency
E_e = 0
2 12
2 12
2 12
2 12 Hz
λ_p = 470 nm
Irradiance _{λp = 524 nm}
R_e
responsivity
(Note 10)
λ_p = 565 nm
λ_p = 640 nm
Saturation
irradiance
(Note 11)
λ_p = 470 nm
λ_p = 524 nm
λ_p = 565 nm
λ_p = 640 nm
λ_p = 470 nm
Illuminance _{λp = 524 nm}
R_v
responsivity
(Note 12)
λ_p = 565 nm
λ_p = 640 nm
f_O = 0 to 5 kHz
424
495
532
578
1410
1210
1130
1040
565
95
89
373
± 0.1
%
348
163
37
31
1720
464
31
6
20
± 0.1
%
81
337
309
29
1780
1940
108
65
52
19
± 0.1
%
26
35
91
550
1090
35
7
15
355
± 0.1
%
Hz/
(μW/
cm²)
μW/
cm²
Hz/
lx
% F.S.
Nonlinearity
(Note 13)
f_O = 0 to 50 kHz
± 0.2
%
± 0.2
%
± 0.2
%
± 0.2
%
% F.S.
f_O = 0 to 500 kHz
± 0.5
%
± 0.5
%
± 0.5
%
± 0.5
%
% F.S.
Recovery
from power
down
100
100
100
100
μs
Response
time to out-
put enable
(OE)
100
100
100
100
ns
NOTES: 5. Optical measurements are made using small-angle incident radiation from a light-emitting diode (LED) optical source.
6. The 470 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
peak wavelength λ_p = 470 nm, spectral halfwidth Δλ½ = 35 nm, and luminous efficacy = 75 lm/W.
7. The 524 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
peak wavelength λ_p = 524 nm, spectral halfwidth Δλ½ = 47 nm, and luminous efficacy = 520 lm/W.
8. The 565 nm input irradiance is supplied by a GaP light-emitting diode with the following characteristics:
peak wavelength λ_p = 565 nm, spectral halfwidth Δλ½ = 28 nm, and luminous efficacy = 595 lm/W.
9. The 640 nm input irradiance is supplied by a AlInGaP light-emitting diode with the following characteristics:
peak wavelength λ_p = 640 nm, spectral halfwidth Δλ½ = 17 nm, and luminous efficacy = 155 lm/W.
10. Irradiance responsivity R_e is characterized over the range from zero to 5 kHz.
11. Saturation irradiance = (full-scale frequency)/(irradiance responsivity).
12. Illuminance responsivity Rv is calculated from the irradiance responsivity by using the LED luminous efficacy values stated in notes
6, 7, 8, and 9, and using 1 lx = 1 lm/m².
13. Nonlinearity is defined as the deviation of f_O from a straight line between zero and full scale, expressed as a percent of full scale.
Copyright E 2008, TAOS Inc.
4
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