TCS3490 Datasheet, PDF (6/34 Pages) ams AG – Color Light-to-Digital Converter

TCS3490 − Electrical Characteristics
Figure 8:
Optical Characteristics (Clear Channel), V_DD = 3V, T_A = 25°C, AGAIN = 16x, ATIME = 0xDC (100ms)
Parameter
R_e
Irradiance Responsivity
(Clear Channel)
Test Conditions
White LED, CCT = 2700K,
E_e = 45.6 μW/cm^{2 (1)}
Blue LED, λ_D = 465 nm,
E_e = 53.8 μW/cm^{2 (2)}
Green LED, λ_D = 525 nm,
E_e = 43.9 μW/cm^{2 (3)}
Red LED, λ_D = 615 nm,
E_e = 37.5 μW/cm^{2 (4)}
Min
Typ
Max
Unit
38.9
48.6
58.3
28.6
35.7
33.6
42.0
42.8
counts/
(μW/cm²)
50.4
49.0
61.3
73.6
Figure 9:
Optical Characteristics, V_DD = 3V, T_A = 25°C
Parameter
Test Conditions
Red/Clear
Min Max
Blue LED, λ_D = 465 nm ⁽²⁾
0%
Color ADC count
value ratio:
Green LED, λ_D = 525 nm ⁽³⁾ 3%
Color / Clear
Red LED, λ_D = 615 nm ⁽⁴⁾ 80%
13%
22%
110%
Green/Clear
Min Max
10% 38%
59% 86%
0%
15%
Blue/Clear
Min Max
70% 91%
10% 40%
3%
26%
Note(s) and/or Footnote(s):
1. The white LED irradiance is supplied by a warm white light-emitting diode with a nominal color temperature of 2700K.
2. The 465 nm input irradiance is supplied by an InGaN light-emitting diode with the following typical characteristics: dominant
wavelength λ_D = 465 nm, spectral halfwidth Δλ½ = 22 nm.
3. The 525 nm input irradiance is supplied by an InGaN light-emitting diode with the following typical characteristics: dominant
wavelength λ_D = 525 nm, spectral halfwidth Δλ½ = 35 nm.
4. The 615 nm input irradiance is supplied by an AlInGaP light-emitting diode with the following typical characteristics: dominant
wavelength λ_D = 615 nm, spectral halfwidth Δλ½ = 15 nm.
Page 6
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ams Datasheet
[v1-09] 2016-Jan-11