The JTIA1 is a general purpose transimpedance amplifier board for photodiode measurements. Our high-bandwidth transimpedance amplifier (TIA) portfolio includes devices with variable gain settings, fast recovery time, internal input protection and fully differential outputs that are optimized for a wide range of photodiode applications. Please view our selection of transimpedance amplifiers below Smart. Precision instrumentation systems that measure physical properties using a photodiode or other current-output sensor often include a transimpedance amplifier (TIA) and a programmable-gain stage to maximize dynamic range.