TSL257

t t 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 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 TSL257 HIGHĆSENSITIVITY LIGHTĆTOĆVOLTAGE CONVERTER TAOS023A – JULY 2000 PACKAGE (FRONT VIEW) 123 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. Functional Block Diagram – Voltage + Output Terminal Functions TERMINAL NAME NO. GND 1 OUT 3 VDD 2 DESCRIPTION Ground (substrate). All voltages are referenced to GND. Output voltage Supply voltage www.taosinc.com Texas Advant ced Optoelectronic Solutions Inc. 800 Jupiter Road, Suite 205 S Plano, TX 75074 S (972) 673-0759 t Copyright E 2001, TAOS Inc. 1 TSL257 HIGHĆSENSITIVITY LIGHTĆTOĆVOLTAGE CONVERTER TAOS023A – JULY 2000 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)† Suppl...