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TSL245RSM-LF

P1-P3P4-P6P7-P9P10-P10
TSL245R
INFRARED LIGHT-TO-FREQUENCY CONVERTER
TAOS060D − SEPTEMBER 2007
1
The LUMENOLOGY r Company
r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
D High-Resolution Conversion of Light
Intensity to Frequency With No External
Components
D Communicates Directly With a
Microcontroller
D Compact Three-Leaded Plastic Package
D Integral Visible-Light Cutoff Filter
D Single-Supply Operation . . . 2.7 V to 5.5 V
D High Irradiance Responsivity ...Typically
500 Hz/(μW/cm
2
) at 940 nm
D Nonlinearity Error Typically 0.2% at 100 kHz
D Available in Through-Hole and Surface
Mount Three-Lead Sidelooker Packages
D Replacement for TSL245
D Lead (Pb) Free Package Option Available
Description
The TSL245R light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter
on a single monolithic CMOS integrated circuit. Output is a square wave (50% duty cycle) with frequency directly
proportional to light intensity (irradiance) on the photodiode. The digital output allows direct interface to a
microcontroller or other logic circuitry. The TSL245R is characterized for operation over the temperature range
of −25°C to 70°C and is supplied in a 3-lead plastic side-looker package with an integral visible-light cutoff filter
and lens. When supplied in the lead (Pb) free package, the devices are RoHS compliant.
Functional Block Diagram
Light
Current-to-Frequency
Converter
Photodiode Output
Available Options
DEVICE T
A
PACKAGE − LEADS PACKAGE DESIGNATOR ORDERING NUMBER
TSL245R −25°C to 70° 3-lead Sidelooker S TSL245R
TSL245R −25°C to 70° 3-lead Sidelooker — Lead (Pb) Free S TSL245R−LF
TSL245R −25°C to 70° 3-lead Surface Mount Sidelooker SM TSL245RSM
TSL245R −25°C to 70° 3-lead Surface Mount Side-Looker — Lead (Pb)
Free
SM TSL245RSM−LF
r
r
Texas Advanced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
PACKAGE S
SIDELOOKER
(FRONT VIEW)
1
GND
2
V
DD
3
OUT
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
(FRONT VIEW)
1
GND
2
V
DD
3
OUT
TSL245R
INFRARED LIGHT-TO-FREQUENCY CONVERTER
TAOS060D − SEPTEMBER 2007
2
r
r
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
www.taosinc.com
Terminal Functions
TERMINAL
TYPE
DESCRIPTION
NAME
NO.
TYPE
DESCRIPTION
GND 1 Power supply ground (substrate). All voltages are referenced to GND.
OUT 3 O Output voltage.
V
DD
2 Supply voltage.
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
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, λp = 940 nm
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
O
Output frequency E
e
= 40 μW/cm
2
10 20 30 kHz
f
D
Dark frequency E
e
= 0 μW/cm
2
0.4 10 Hz
R
e
Irradiance responsivity 0.5
kHz/(μW/
cm
2
)
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
§
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.
TSL245R
INFRARED LIGHT-TO-FREQUENCY CONVERTER
TAOS060D − SEPTEMBER 2007
3
The LUMENOLOGY r Company
r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
TYPICAL CHARACTERISTICS
Figure 1
OUTPUT FREQUENCY
vs
IRRADIANCE
E
e
− Irradiance − μW/cm
2
Output Frequency (f
O
− f
D
) — kHz
0.001
0.01
0.1
1
10
100
1000
0.001 0.01 1 10 10000.1
100
V
DD
= 5 V
λ
p
= 940 nm
T
A
= 25°C
Figure 2
PHOTODIODE SPECTRAL RESPONSE
λ − Wavelength − nm
T
A
= 25°C
0
0.2
0.4
0.6
0.8
1
Relative Responsivity
700 800 900 1000 1100600
Figure 3
DARK FREQUENCY
vs
TEMPERATURE
V
DD
= 5 V
E
e
= 0
T
A
− Temperature − °C
−25 0 25 50 75
0
0.2
0.4
0.6
0.8
1
1.2
f
O(dark)
— Dark Frequency — Hz
Figure 4
OUTPUT FREQUENCY
vs
SUPPLY VOLTAGE
V
DD
− Supply Voltage − V
Normalized Output Frequency
2.5 3 3.5 4 4.5 5
0.980
0.985
0.990
0.995
1.000
1.005
1.010
5.5
V
DD
= 5 V
T
A
= 25°C
f
O
= 20 kHz
P1-P3P4-P6P7-P9P10-P10

TSL245RSM-LF

Mfr. #:
Buy TSL245RSM-LF
Manufacturer:
ams
Description:
Light To Frequency & Light To Voltage Light to Frequency Converter
Lifecycle:
New from this manufacturer.
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