Norwood, MA (10/20/2009) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, today introduced a high-performance 6-channel video reconstruction filter that allows designers of consumer media players and professional video systems to easily filter and drive video signals ranging from standard to high definition. The ADA4424-6 features three SD (standard definition) and three ED/HD (enhanced/high definition) channels and an exceptionally flat frequency response, providing 0.1-dB passband flatness with no peaking, which is required by 1080p high-definition-compliant media players and recorders.
The luma channels of the ADA4424-6 feature four distinct modes for detecting and cancelling dc-input offset voltages up to 1.1 V, and there is no dc offset at the output pins. The ADA4424-6 fully supports S1/S2 signaling defined by the EIA CPR-1202 specification and the D-connector interface defined in EIAJ CP-4120 standard.
The new filter’s SD channels operate flat to 6.75 MHz and include two fifth-order Butterworth filters for SD filtering. The SD section also includes internal summation of Y/C channels for composite-video baseband signal output. The ED/HD channels are composed of three fifth-order Butterworth filters and operate within +0.1 dB peaking typically, out to 13.5 MHz and 30 MHz.
The new filter features an integrated charge pump that allows the outputs to swing up to 1.4-V below ground, eliminating the need for large coupling capacitors. The output drivers on the ADA4424-6 feature rail-to-rail outputs with a fixed gain of 6.2 dB. Each output is capable of driving two double-terminated 75-ohm cables simultaneously. The filter/buffer section operates from a single 3.3-V supply. The device includes a dedicated 5-V supply pin used for D connector and S1/S2 signaling support.
Availability and Pricing
For more product information http://www.analog.com/pr/ADA4424-6. For information on ADI’s video filters, buffers and amplifiers, visit http://www.analog.com/pr/video_amps-buffers-filters.
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