TSL257 [TAOS]
HIGH-SENSITIVITY LIGHT-TO-VOLTAGE CONVERTER; 高灵敏度光到电压转换器
| 型号： | TSL257 |
| 厂家： | 
TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS |
| 描述： | HIGH-SENSITIVITY LIGHT-TO-VOLTAGE CONVERTER |
| 文件： | 总8页 (文件大小：145K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TSL257
HIGH-SENSITIVITY
r
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
r
PACKAGE S
SIDELOOKER
(FRONT VIEW)
PACKAGE SM
SURFACE MOUNT
SIDELOOKER
D Converts Light Intensity to Output Voltage
D Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
(FRONT VIEW)
D High Sensitivity
D Single Voltage Supply Operation (2.7 V to
5.5 V)
D Low Noise (200 μVrms Typ to 1 kHz)
D Rail-to-Rail Output
D High Power-Supply Rejection (35 dB at
1 kHz)
D Compact 3-Leaded Plastic Package
1
2
3
D RoHS Compliant (−LF Package Only)
GND VDD OUT
1
2
3
GND VDD OUT
Description
The TSL257 is a high-sensitivity low-noise light-to-voltage optical converter that combines a photodiode and
a transimpedance amplifier on a single monolithic CMOS integrated circuit. Output voltage is directly
proportional to light intensity (irradiance) on the photodiode. The TSL257 has a transimpedance gain of 320 MΩ.
The device has improved offset voltage stability and low power consumption and is supplied in a 3-lead clear
plastic sidelooker package with an integral lens. When supplied in the lead (Pb) free package, the device is
RoHS compliant.
Functional Block Diagram
−
Voltage
Output
+
Available Options
DEVICE
TSL257
TSL257
TSL257
T
PACKAGE − LEADS
3-lead Sidelooker
PACKAGE DESIGNATOR ORDERING NUMBER
A
0°C to 70°C
0°C to 70°C
0°C to 70°C
S
S
TSL257
3-lead Sidelooker — Lead (Pb) Free
TSL257−LF
TSL257SM−LF
3-lead Surface-Mount Sidelooker — Lead (Pb) Free
SM
Terminal Functions
TERMINAL
DESCRIPTION
NAME
GND
NO.
1
Ground (substrate). All voltages are referenced to GND.
OUT
3
Output voltage
Supply voltage
V
2
DD
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
Texas Advarnced Optoelectronic Solutions Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972) 673-0759
www.taosinc.com
1
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
DD
Output current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 mA
O
Duration of short-circuit current at (or below) 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 s
Operating free-air temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25°C to 85°C
A
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25°C to 85°C
stg
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 voltages are with respect to GND.
Recommended Operating Conditions
MIN
2.7
0
MAX
5.5
UNIT
V
Supply voltage, V
DD
Operating free-air temperature, T
70
°C
A
Electrical Characteristics at VDD = 5 V, TA = 25°C, λp = 470 nm, RL = 10 kΩ (unless otherwise noted)
(see Notes 2 and 3)
PARAMETER
Dark voltage
TEST CONDITIONS
MIN
TYP
MAX
UNIT
V
E = 0
e
0
15
mV
D
V
V
= 4.5 V,
No Load
R = 10 kΩ
4.49
4.2
DD
DD
V
V
Maximum output voltage swing
Output voltage
V
OM
= 4.5 V,
4
L
2
E = 1.54 μW/cm , λ = 470 nm, Note 5
1.6
2
2.4
V
O
e
p
α
Temperature coefficient of dark voltage (V )
T = 0°C to 70°C
−15
1.18
1.30
1.58
1.68
55
μV/°C
VD
D
A
λ = 428 nm, see Notes 4 and 8
p
λ = 470 nm, see Notes 5 and 8
p
2
N
Irradiance responsivity
V/(μW/cm )
e
λ = 565 nm, see Notes 6 and 8
p
λ = 645 nm, see Notes 7 and 8
p
PSRR Power supply rejection ratio
f
f
= 100 Hz, see Note 9
dB
dB
ac
ac
= 1 kHz, see Note 9
35
2
I
Supply current
E = 1.54 μW/cm , λ = 470 nm, Note 5
1.9
3.5
mA
DD
e
p
NOTES: 2. Measured with R = 10 kΩ between output and ground.
L
3. Optical measurements are made using small-angle incident radiation from a light-emitting diode (LED) optical source.
4. The input irradiance is supplied by a GaN/SiC light-emitting diode with the following characteristics: peak wavelength λ = 428 nm,
p
spectral halfwidth Δλ½ = 65 nm.
5. The input irradiance is supplied by an InGaN light-emitting diode with the following characteristics: peak wavelength λ = 470 nm,
p
spectral halfwidth Δλ½ = 35 nm.
6. The input irradiance is supplied by a GaP light-emitting diode with the following characteristics: peak wavelength λ = 565 nm,
p
spectral halfwidth Δλ½ = 28 nm.
7. The input irradiance is supplied by an AlGaAs light-emitting diode with the following characteristics: peak wavelength λ = 645 nm,
p
spectral halfwidth Δλ½ = 25 nm.
8. Irradiance responsivity is characterized over the range V = 0.1 V to 4.5 V. The best-fit straight line of Output Voltage V versus
O
O
Irradiance E over this range will typically have a positive extrapolated V value for E = 0.
e
O
e
9. Power supply rejection ratio PSRR is defined as 20 log (ΔV (f)/ΔV (f)) with V (f = 0) = 5 V and V (f = 0) = 2 V.
DD
O
DD
O
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
2
www.taosinc.com
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
Switching Characteristics at VDD = 5 V, TA = 25°C, λp = 470 nm, RL = 10 kΩ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
See Note 10 and Figure 1
See Note 10 and Figure 1
See Note 10 and Figure 1
MIN
TYP
160
150
330
200
6
MAX
250
UNIT
μs
t
t
t
Output pulse rise time, 10% to 90% of final value
Output pulse fall time, 10% to 90% of final value
Output settling time to 1% of final value
Integrated noise voltage
r
250
μs
f
μs
s
f = dc to 1 kHz
f = 10 Hz
E = 0
μVrms
e
E = 0
e
V
Output noise voltage, rms
f = 100 Hz
f = 1 kHz
E = 0
6
7
μV/√Hz rms
n
e
E = 0
e
NOTE 10: Switching characteristics apply over the range V = 0.1 V to 4.5 V.
O
PARAMETER MEASUREMENT INFORMATION
V
DD
E
e
Pulse
2
Generator
Input
LED
(see Note A)
−
t
f
t
r
3
Output
+
90%
90%
R
L
TSL257
1
Output
(see Note B)
10%
10%
VOLTAGE WAVEFORM
TEST CIRCUIT
NOTES: A. The input irradiance is supplied by a pulsed InGaN light-emitting diode with the following characteristics: λ = 470 nm,
p
t < 1 μs, t < 1 μs.
r
f
B. The output waveform is monitored on an oscilloscope with the following characteristics: t < 100 ns, Z ≥ 1 MΩ, C ≤ 20 pF.
r
i
i
Figure 1. Switching Times
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
www.taosinc.com
3
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
TYPICAL CHARACTERISTICS
POWER SUPPLY REJECTION RATIO
vs
FREQUENCY
PHOTODIODE SPECTRAL RESPONSIVITY
1.6
80
70
60
50
40
30
20
10
0
Normalized to
470 nm
T
A
= 25°C
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2
3
4
5
6
300
500
700
900
1100
10
10
10
10
10
10
λ − Wavelength − nm
f − Frequency − Hz
Figure 2
Figure 3
DARK VOLTAGE
vs
NORMALIZED RESPONSE
vs
FREE-AIR TEMPERATURE
ANGULAR DISPLACEMENT
10
9
1.0
V
= 5 V
DD
0.9
0.8
0.7
0.6
8
7
6
5
4
0.5
0.4
3
2
0.3
0.2
0.1
0
1
0
0
10
20
30
40
50
60
70
−90 −70 −50 −30 −10
10
30
50
70
90
T
A
− Free-Air Temperature − °C
Angular Displacement − 5
Figure 4
Figure 5
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
4
www.taosinc.com
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
APPLICATION INFORMATION
PCB Pad Layout
Suggested PCB pad layout guidelines for the SM surface mount package are shown in Figure 6.
1.0
1.0
1.0
3.2
1.0
1.0
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
Figure 6. Suggested SM Package PCB Layout
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
www.taosinc.com
5
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
MECHANICAL DATA
The device is supplied in a clear plastic three-lead sidelooker through-hole package (S).
PACKAGE S PLASTIC SINGLE-IN-LINE SIDE-LOOKER PACKAGE
TOP VIEW
4.60
2.60
1.64
R 0.90
FRONT VIEW
SIDE VIEW
0.15
Note B
1.80
2.30
4.60
1
1.56
0.42
14.86 + 0.50
Pb
Lead Free
Available
2 y 2
0.42
0.47 TYP
NOTES: A. All linear dimensions are in millimeters; tolerance is ± 0.25 mm unless otherwise stated.
B. Dimension is to center of lens arc, which is located below the package face.
C. The integrated photodiode active area is round with a typical diameter of 0.75 mm and is typically located in the center of the lens
and 0.97 mm below the top of the lens surface.
D. Index of refraction of clear plastic is 1.55.
E. Lead finish for TSL257: solder dipped, 63% Sn/37% Pb. Lead finish for TSL257−LF: solder dipped, 100% Sn.
F. This drawing is subject to change without notice.
Figure 7. Package S — Single-In-Line Side-Looker Package Configuration
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
6
www.taosinc.com
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
MECHANICAL DATA
PACKAGE SM
TOP VIEW
PLASTIC SURFACE MOUNT SIDE-LOOKER PACKAGE
4.60
R 0.90
2.60
1.64
FRONT VIEW
SIDE VIEW
0.15 Note B
2.30
1.80
4.60
0.62 + 0.10
1.97
2.59
1.00
0.42
+0.10
0.62
5.73 + 0.50
−0.15
Pb
2 y 2
0.47 TYP
0.42
Lead Free
NOTES: A. All linear dimensions are in millimeters; tolerance is ± 0.25 mm unless otherwise stated.
B. Dimension is to center of lens arc, which is located below the package face.
C. The integrated photodiode active area is typically located in the center of the lens and 0.97 mm below the top of the lens surface.
D. Index of refraction of clear plastic is 1.55.
E. Lead finish for TSL257SM−LF: solder dipped, 100% Sn.
F. This drawing is subject to change without notice.
Figure 8. Package SM — Surface Mount Side-Looker Package Configuration
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
www.taosinc.com
7
TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E − SEPTEMBER 2007
PRODUCTION DATA — information in this document is current at publication date. Products conform to
specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard
warranty. Production processing does not necessarily include testing of all parameters.
LEAD-FREE (Pb-FREE) and GREEN STATEMENT
Pb-Free (RoHS) TAOS’ terms Lead-Free or Pb-Free mean semiconductor products that are compatible with the current
RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous
materials. Where designed to be soldered at high temperatures, TAOS Pb-Free products are suitable for use in specified
lead-free processes.
Green (RoHS & no Sb/Br) TAOS defines Green to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and
Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material).
Important Information and Disclaimer The information provided in this statement represents TAOS’ knowledge and
belief as of the date that it is provided. TAOS bases its knowledge and belief on information provided by third parties,
and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate
information from third parties. TAOS has taken and continues to take reasonable steps to provide representative
and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and
chemicals. TAOS and TAOS suppliers consider certain information to be proprietary, and thus CAS numbers and other
limited information may not be available for release.
NOTICE
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this
document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised
to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems.
TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product
design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that
the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular
purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incidental damages.
TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR
USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY
RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY
UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK.
LUMENOLOGY, TAOS, the TAOS logo, and Texas Advanced Optoelectronic Solutions are registered trademarks of Texas Advanced
Optoelectronic Solutions Incorporated.
Copyright E 2007, TAOS Inc.
The LUMENOLOGY r Company
r
r
8
www.taosinc.com
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