Datasheet

ISL59831
Single Supply Video Driver with Reconstruction Filter and Charge Pump

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Typical Diagram

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Key Features

3.3V Nominal Supply, Operates Down to 3.0V
DC-Coupled or AC-Coupled Input or Output
Eliminates Need for Large Output Coupling Capacitor
Internal Sync Tip Clamp Puts the Backporch to Ground at the Output
Drives Two Standard Video Loads
Response Flat to 5MHz and 44dB Attenuation at 27MHz
Pb-free Plus Anneal Available (RoHs Compliant)

Description

The ISL59831 is a single supply video driver with reconstruction filter and charge pump. It is designed to drive SDTV displays with luma (Y) or composite video (CV) signals. It operates on a single supply (3.0V to 3.6V) and generates its own negative supply (-1.9V) using a regulated charge pump. Input signal can be AC or DC coupled. When AC coupled, the sync tip clamp sets the blank level to ground at the output, ensuring that the sync-tip voltage level is set to approximately -300mV at the back-termination resistor of a standard video load. The ISL59831 is capable of driving two AC or DC coupled standard video loads. The device also features a 4th order Butterworth reconstruction filter with nominal -3dB frequency set to 9.1MHz, providing 44dB of attenuation at 27MHz. When powered down, the device draws 2µA supply current. Nominal operational current is 15mA. The ISL59831 is available in 12 Ld TDFN package and operates from the -40°C to +85°C temperature range.