TSL238T
HIGH-SENSITIVITY
LIGHT-TO-FREQUENCY CONVERTER
TAOS080G  DECEMBER 2007
3
The LUMENOLOGY r Company
r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
Operating Characteristics at V
DD
 = 5 V, T
A
 = 25?/SPAN>C, ?/SPAN>p = 640 nm (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
f
O
Output frequency
E
e
 = 14.7 糤/cm
2
40
50
60
kHz
E
e
 = 0 糤/cm
2
0
0.3
Hz
f
D
Dark frequency
E
e
 = 0 糤/cm
2
, TA = 50癈 (Note 1)
0
6
Hz
R
e
Irradiance responsivity
3.4
kHz/(糤/
cm
2
)
Peak response wavelength
700
nm
Nonlinearity (Note 2)
f
O
 = 0 kHz to 10 kHz
?%
% F.S.
Step response to full-scale step input
1 pulse of new
frequency plus 1 約
Time from OE
 low to output enabled
1 period of output
frequency
NOTES:  1.  Measured at wafer probe using 50癈 hot chuck.
2.  Nonlinearity is defined as the deviation from a straight line between zero and maximum of stated range, expressed as a percent
of stated range.
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