The ADA4424-6 is a high performance video reconstruction filter specifically designed for consumer applications. It consists of a standard definition (SD) section with two fifth-order Butterworth filters, and a high definition (HD) section with three fifth-order filters. The SD section contains an internal Y/C summer for CVBS output, whereas the HD section provides selectable corner frequencies for either extended definition (ED) or HD signals. The ADA4424-6 filter/buffer section operates from a single 3.3 V supply. Full support for D-terminal (EIAJ RC-5237 D5) and S1/S2 signaling is provided, along with a dedicated 5 V supply pin. Separate enable pins are provided for the SD and HD sections. The luma channels (Y_IN, HY_IN) of the ADA4424-6 are capable of detecting and cancelling dc input offsets of up to 1.1 V. Four distinct modes of detection/cancellation are available. The output drivers on the ADA4424-6 feature rail-to-rail outputs with 6.2 dB gain. An on-board charge pump allows the outputs to swing up to 1.4 V below ground, eliminating the need for large coupling capacitors. Each output is capable of driving two 75 Ohm doubly terminated cables. The ADA4424-6 is available in a 38-lead TSSOP and operates in the extended industrial temperature range of -40°C to +85°C.
3 SD channels; 18 MHz typical
1 dB bandwidth (BW)
3 ED/HD channels; 25 MHz/34 MHz typical 1 dB BW
Fixed gain of 6.2 dB (2.042 V/V)
Onboard negative supply for output coupling without capacitors
Minimal dc offset at the output pins
Internal summation of Y and C channels for CVBS output
Flexible input DC offset cancellation for luma channels
D- terminal (EIAJ RC-5237 D5) and S-terminal (S1/S2) support
Capable of driving two (2) back-terminated 75 Ohm video loads simultaneously
Separate power-down pins for SD and ED/HD sections
38-lead TSSOP package
Sony Green Partner Environmental Quality Approval Program compliant
Applications include DVD players and recorders, Set-top boxes, Projectors, Personal video recorders