TSL257T

Technical coantmesntAsGtill valid r r 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...