2:1 Mux Amps – with integrated input clamps

Maxim introduced the MAX4028/MAX4029 triple/quad 2:1 mux amps (video switches plus video amplifier) with integrated input clamps, designed for automotive navigation and entertainment, video projectors, and TV/display applications.

Operating from a single 5V supply, these devices exhibit a 130MHz large-signal (2V peak-to-peak) -3dB bandwidth and a 30MHz large-signal (2V peak-to-peak) 0.1dB bandwidth, making them ideal for HDTV and progressive-scan video inputs. The 6dB-gain output buffers directly drive 150 ohms video output loads. The MAX4028/MAX4029 feature user-selectable input sync-tip and key clamps for selecting from different video formats. This simplifies signal-source selection and eliminates up 48 discrete components.

Fast 20ns switching times make the devices ideal for inserting On-Screen Display (OSD) information, while a high-impedance, output-disable mode supports multiple devices for larger systems.

The MAX4028/MAX4029 operate over the extended temperature range (-40°C to +85°C) and are available in 16-pin and 20-pin TSSOP and SO packages. Prices for the MAX4028 start at $2.00 (1000-up, FOB USA).

Maxim Integrated Products Ltd, Theale, Berks RG7 4XX, UK.

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