OPT101 Monolithic Photodiodes and Transimpedance Amplifiers

Texas Instruments' OPT101 are monolithic photodiodes with on-chip transimpedance amplifiers. The integrated combination of photodiodes and transimpedance amplifiers on a single chip eliminates the problems commonly encountered in discrete designs, such as leakage current errors, noise pick-up, and gain peaking as a result of stray capacitance. Output voltage increases linearly with light intensity. The amplifier is designed for single or dual power-supply operation.

The 0.09 inch x 0.09 inch (2.29 mm × 2.29 mm) photodiode operates in the photoconductive mode for excellent linearity and low dark current.

The OPT101 operate from 2.7 V to 36 V supplies and quiescent current is only 120 µA. These devices are available in clear plastic 8-pin PDIP and J-lead SOP for surface mounting. The temperature range is 0°C to 70°C.