TCS3404, TCS3414
DIGITAL COLOR SENSORS
TAOS137A − APRIL 2011
Optical Characteristics, VDD = 3 V, TA = 25ꢀ C, GAIN = 64ꢁ, Tint = 12ms (unless otherwise noted) (see
Notes 1 and 2)
Red Channel
Green Channel
Blue Channel
Clear Channel
MIN TYP MAX
TEST
CONDITIONS
PARAMETER
UNIT
MIN TYP MAX
MIN TYP MAX
MIN TYP MAX
λ = 470 nm,
p
0%
0%
15% 15%
15% 60%
110% 0%
50% 65%
90% 59.0
65.6
76.9
90.1
62.5
78.4
72.5
82.7
99.5
69.1
84.3
Irradiance
responsivity
(CS
package)
See Note 3
(counts/
λ = 524 nm,
p
90%
15%
0%
0%
35% 71.2
15% 80.6
90% 56.3
35% 72.5
R
e
μW/
See Note 4
2
cm )
λ = 640 nm,
p
80%
0%
See Note 5
λ = 470 nm,
p
15% 10%
15% 60%
50% 65%
Irradiance
responsivity
(FN
package)
See Note 3
(counts/
λ = 524 nm,
p
0%
90%
15%
0%
0%
R
e
μW/
See Note 4
2
cm )
λ = 640 nm,
p
80%
110%
0%
15% 94.2 105.3 116.3
See Note 5
NOTES: 1. The percentage shown represents the ratio of the respective red, green, or blue channel value to the clear channel value.
2. Optical measurements are made using small-angle incident radiation from a light-emitting diode (LED) optical source.
3. The 470 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
peak wavelength λ = 470 nm, spectral halfwidth Δλ½ = 35 nm, and luminous efficacy = 75 lm/W.
p
4. The 524 nm input irradiance is supplied by an InGaN light-emitting diode with the following characteristics:
peak wavelength λ = 524 nm, spectral halfwidth Δλ½ = 47 nm, and luminous efficacy = 520 lm/W.
p
5. The 640 nm input irradiance is supplied by a AlInGaP light-emitting diode with the following characteristics:
peak wavelength λ = 640 nm, spectral halfwidth Δλ½ = 17 nm, and luminous efficacy = 155 lm/W.
p
6. Illuminance responsivity R is calculated from the irradiance responsivity R by using the LED luminous efficacy values stated in
v
e
2
notes 3, 4, and 5 and using 1 lx = 1 lm/m .
Operating Characteristics, VDD = 3 V, TA = 25ꢀ C, (unless otherwise noted) (see Notes 2, 3, and 4)
PARAMETER
TEST CONDITIONS
MIN
3.8
TYP
4
MAX
4.2
UNIT
4×
16×
64×
15.2
60.8
0
16
64
3
16.8
67.2
Gain scaling, relative to 1× gain setting
Dark ADC count value
E = 0, 64× gain setting, T = 400 ms
15 counts
e
int
Maximum digital count value
Oscillator frequency
Prescale = 1, T = 400 ms (Note 1)
65535 counts
int
f
4.2
−5
4.4
4.6
5
MHz
%
osc
Internal integration time tolerance
Temperature coefficient of responsivity (SYNC mode) λ ꢀ 700 nm, −40°C ꢀ T ꢀ 85°C
200
ppm/°C
A
NOTES: 1. At shorter integration times and/or higher Prescale settings, the device will reach saturation of the analog section before the digital
count reaches the maximum 16-bit value. The worst-case (lowest) analog saturation value can be obtained using the formula: Analog
saturation = (fosc(min) ×Tint) ÷Prescale, where Fosc(min) is the minimum oscillator frequency in Hz, and tint is the actual integration
time (internal, manually-timed, or sync-generated) in seconds.
2. Gain is controlled by the gain register (07h) described in the Register section.
3. Measurements taken when the Photodiode field value in the Photodiode Register (06h) is 00b and when the Prescaler field value
in the Gain Register (07h) is 000b.
4. The full scale ADC count value is slew-rate limited for short integration times and is limited by the 16-bit counter for long integration
times. The nominal transition between the two regions is t = 65535/5000 = 13.1 ms.
int
Copyright E 2011, TAOS Inc.
The LUMENOLOGY r Company
r
r
www.taosinc.com
5
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
