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TSL257
HIGH-SENSITIVITY
LIGHT-TO-VOLTAGE CONVERTER
TAOS023E  SEPTEMBER 2007
1
The LUMENOLOGY r Company
r
r
Copyright E 2007, TAOS Inc.
www.taosinc.com
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   Low Noise (200 ?/SPAN>Vrms 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
D   RoHS Compliant (LF Package Only)
 
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 M?
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
T
A
PACKAGE  LEADS
PACKAGE DESIGNATOR
ORDERING NUMBER
TSL257
0癈 to 70癈
3-lead Sidelooker
S
TSL257
TSL257
0癈 to 70癈
3-lead Sidelooker  Lead (Pb) Free
S
TSL257LF
TSL257
0癈 to 70癈
3-lead Surface-Mount Sidelooker  Lead (Pb) Free
SM
TSL257SMLF
Terminal Functions
TERMINAL
NAME
NO.
DESCRIPTION
GND
1
Ground (substrate). All voltages are referenced to GND.
OUT
3
Output voltage
V
DD
2
Supply voltage
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
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TSL2581EVM 制造商:TAOS Inc 功能描述:EVAL MODULE FOR TSL2581
TSL2581FN 功能描述:光学数位转换器 Light to Digital 30x Sensitivity RoHS:否 制造商:ams 数据总线宽度: 峰值波长:470 nm 最大工作频率: 工作电源电压: 工作电流: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:Chipscale-6 封装:Reel
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