Full PDF Text Transcription for ISL4089 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
ISL4089. For precise diagrams, and layout, please refer to the original PDF.
ISL4089 DC-Restored Video Amplifier The ISL4089 is complete DC-restored monolithic video amplifier sub-system. It contains a high performance video amplifier and a nullin...
View more extracted text
ub-system. It contains a high performance video amplifier and a nulling, sample-and-hold amplifier designed to establish a programmable DC output level. When the HOLD logic input “0” is applied the DC restore function is active. The sample-and-hold amplifier loop is closed and used to null the DC offset of the video amplifier. This can occur during sync, or, at any time that a black level is expected. When the HOLD input “1” is applied, the correcting voltage is stored on the video amplifier’s input coupling capacitor. This condition must be true during active video. The restored DC voltage level can be adjusted using an e