TCS3471 Datasheet, PDF (4/22 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – COLOR LIGHT-TO-DIGITAL CONVERTER

TCS3471
COLOR LIGHT-TO-DIGITAL CONVERTER
TAOS115 − MARCH 2011
Optical Characteristics, V_DD = 3 V, T_A = 255C, GAIN = 16, ATIME = 0xF6 (unless otherwise noted) (see
Note 1)
PARAMETER
TEST
CONDITIONS
Red Channel
Green Channel
Blue Channel
Clear Channel
MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNIT
R_e
Irradiance
responsivity
λ_D = 465 nm
See Note 2
λ_D = 525 nm
See Note 3
λ_D = 625 nm
See Note 4
0%
8%
85%
15% 10%
25% 60%
110% 0%
42% 65%
85% 9%
15% 5%
88% 19.2
35% 22.4
25% 27.2
24 28.8
(counts/
28 33.6 μW/
cm²)
34 40.8
NOTES: 1. The percentage shown represents the ratio of the respective red, green, or blue channel value to the clear channel value.
2. The 465 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
dominant wavelength λ_D = 465 nm, spectral halfwidth Δλ½ = 22 nm, and luminous efficacy = 75 lm/W.
3. The 525 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
dominant wavelength λ_D = 525 nm, spectral halfwidth Δλ½ = 35 nm, and luminous efficacy = 520 lm/W.
4. The 625 nm input irradiance is supplied by a AlInGaP light-emitting diode with the following characteristics:
dominant wavelength λ_D = 625 nm, spectral halfwidth Δλ½ = 9 nm, and luminous efficacy = 155 lm/W.
RGBC Characteristics, V_DD = 3 V, T_A = 255C, AGAIN = 16, AEN = 1 (unless otherwise noted)
PARAMETER
Dark ADC count value
ADC integration time step size
TEST CONDITIONS
E_e = 0, AGAIN = 60×, ATIME = 0xD6 (100 ms)
ATIME = 0xFF
MIN TYP
0
1
2.27 2.4
MAX
5
2.56
UNIT
counts
ms
ADC number of integration steps
1
256 steps
ADC counts per step
0
1024 counts
ADC count value
Gain scaling, relative to 1× gain
setting
ATIME = 0xC0 (153.6 ms)
4×
16×
60×
0
65535 counts
3.8
4
4.2
15
16 16.8 %
58
60
63
Wait Characteristics, V_DD = 3 V, T_A = 255C, Gain = 16, WEN = 1 (unless otherwise noted)
PARAMETER
TEST CONDITIONS
CHANNEL
MIN TYP MAX
Wait step size
WTIME = 0xFF
2.27 2.4 2.56
Wait number of steps
1
256
UNIT
ms
steps
Copyright E 2011, TAOS Inc.
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