TSL230R−LF, TSL230AR−LF, TSL230BR−LF
PROGRAMMABLE LIGHT-TO-FREQUENCY CONVERTERS
TAOS079A
−
OCTOBER 2006
TYPICAL CHARACTERISTICS
OUTPUT FREQUENCY
vs
IRRADIANCE
1000
V
DD
= 5 V
λ
p
= 640 nm
T
A
= 25°C
S2 = S3 = L
S0 = H, S1 = H
1.2
PHOTODIODE SPECTRAL RESPONSIVITY
100
fO
−
Output Frequency
−
kHz
1.0
Normalized Responsivity
10
0.8
1
0.6
0.1
S0 = L, S1 = H
0.4
0.01
S0 = H, S1 = L
0.2
0.001
0.001 0.01 0.1
1
10 10 0
1k
10 k 100 k 1 M
0
300
400
500
600
700
800
900
1000 1100
E
e
−
Irradiance
−
μW/cm
2
λ
−
Wavelength
−
nm
Figure 1
Figure 2
TEMPERATURE COEFFICIENT
OF OUTPUT FREQUENCY
vs
WAVELENGTH OF INCIDENT LIGHT
7000
6000
5000
4000
3000
2000
1000
0
300
V
DD
= 5 V
1.2
1
f
O(dark)
— Dark Frequency — Hz
V
DD
= 5 V
E
e
= 0
S0 = S1 = H
S2 = S3 = L
0.8
0.6
0.4
0.2
0
−25
0
25
50
75
Temperature Coefficient of Output Frequency — ppm/5C
DARK FREQUENCY
vs
TEMPERATURE
400
500
600
700
800
900
1000
T
A
−
Temperature
−
°C
λ
−
Wavelength of Incident Light
−
nm
Figure 3
Figure 4
Copyright
E
2006, TAOS Inc.
r
r
The
LUMENOLOGY
r
Company
4
www.taosinc.com