Analog video front-ends

28 March 2001 Analogue, Mixed Signal, LSI

The EL4101C and EL4102C integrate common analog video interface components to support latest high-bandwidth video and PC standards. As the display resolution of projectors and flat panel gets higher, the bandwidth of the analog signal used to transmit these signals continues to increase. With a bandwidth of 500 MHz, these integrated analog video front-ends (VFAs) from Elantec are designed to support XGA through UXGA and QXGA new high-resolution displays. The devices also integrate a number of functions usually sold as separate devices.

The EL4101C integrates a 4:1 multiplexer for input source selection and a DC-restoration circuit, which prepare the input signal for further processing such as analog-to-digital (A/D) conversion. The EL4102C adds an 18 dB selectable-gain amplifier, programmable via a three-wire serial interface in 32-step increments. This allows the user to scale the signal before processing or A/D conversion to achieve optimal resolution and performance. Both products also exhibit high slew-rates and fast settling times.

CST Electronics

(011) 452 0706

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