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PDF TSL257T Data sheet ( Hoja de datos )
| Número de pieza | TSL257T | |
| Descripción | HIGH-SENSITIVITY LIGHT-TO-VOLTAGE CONVERTER | |
| Fabricantes | TAOS | |
| Logotipo |  |
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D Converts Light Intensity to Output Voltage
D Monolithic Silicon IC Containing
Photodiode, Operational Amplifier, and
Feedback Components
D High Sensitivity
D Single Voltage Supply Operation (2.7 V to
5.5 V)
D High Irradiance Responsivity . . . Typical
680 mV/(μW/cm2) at λp = 640 nm
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 Low-Profile Surface-Mount Package
D RoHS Compliant
TSL257T
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS065B − APRIL 2007
PACKAGE T
4-LEAD SMD
(TOP VIEW)
N/C 1
GND 2
4 OUT
3 VDD
Description
The TSL257T 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 TSL257T has a transimpedance gain of
320 MΩ. The device has improved offset voltage stability and low power consumption and is supplied in a
compact 4-lead surface-mount package.
Functional Block Diagram
− Voltage
+ Output
Terminal Functions
TERMINAL
NAME
T PKG
NO.
GND
2
OUT
4
VDD
3
N/C 1
DESCRIPTION
Power supply ground (substrate). All voltages are referenced to GND.
Output voltage.
Supply voltage.
No connection.
The
LUMENOLOGY
r
Company
Texas
Advarnced
Optoelectronic
Solutions
Inc.
1001 Klein Road S Suite 300 S Plano, TX 75074 S (972r) 673-0759
www.taosinc.com
Copyright E 2007, TAOS Inc.
1
1 page  
TSL257T
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS065B − APRIL 2007
APPLICATION INFORMATION
PCB Pad Layout
Suggested PCB pad layout guidelines for the T package are shown in Figure 7.
2.90
1.50
1.00 0.90
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
Figure 7. Suggested T Package PCB Layout
The LUMENOLOGY r Company
r
www.taosinc.com
r
Copyright E 2007, TAOS Inc.
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet TSL257T.PDF ] | |
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