Datasheet

TSL235R
LIGHT-TO-FREQUENCY CONVERTER
TAOS038E −SEPTEMBER 2007
2
r
r
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
www.taosinc.com
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
DD
(see Note 1) 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
−25°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−25°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds (S Package) 260°C. . . . . . . . . . . . . . . . . . . .
Reflow solder, in accordance with J-STD-020C or J-STD-020D (SM Package) 260°C. . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to GND.
Recommended Operating Conditions
MIN NOM MAX UNIT
Supply voltage, V
DD
2.7 5 5.5 V
Operating free-air temperature range, T
A
−25 70 °C
Electrical Characteristics at V
DD
= 5 V, T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
OH
High-level output voltage I
OH
= − 4 mA 4 4.5 V
V
OL
Low-level output voltage I
OL
= 4 mA 0.25 0.4 V
I
DD
Supply current 2 3 mA
Full-scale frequency
‡
500 kHz
Temperature coefficient of output frequency Wavelength < 700nm ± 150 ppm/°C
k
SVS
Supply-voltage sensitivity V
DD
= 5 V ±10% ± 0.5 %/ V
‡
Full-scale frequency is the maximum operating frequency of the device without saturation.
Operating Characteristics at V
DD
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
Output frequency
E
e
= 430 μW/cm
2
, λ
p
= 635 nm 200 250 300 kHz
f
O
Output frequency
E
e
= 0 μW/cm
2
0.4 10 Hz
Nli it
§
f
O
= 0 kHz to 10 kHz ± 0.1% %F.S.
Nonlinearity
§
f
O
= 0 kHz to 100 kHz ± 0.2% %F.S.
Step response to full-scale step input
1 pulse of new
frequency plus 1 μs
‡
Full-scale frequency is the maximum operating frequency of the device without saturation.
§
Nonlinearity is defined as the deviation of f
O
from a straight line between zero and full scale, expressed as a percent of full scale.