A PAL/NTSC Digital Video Encoder on 0.6um CMOS with 66dB typ SNR, 0.4% Diff. Gain and 0.2° Diff. Phase

This paper describes a digital video encoder which accepts a component digital video input data stream, and generates a PAL or NTSC composite analog video output signal. The video signal has typical differential gain and phase of 0.4%, 0.2° respectively, and SNR of 66dB rms. These numbers represent broadcast quality video, the paper outlines the architecture, circuit, and die size minimisation techniques used to achieve this level of performance in a 4 × 4mm CMOS die. The die operates with a +5V supply and is packaged in a 44-pin Plastic Quad Flatpack package (7 × 7mm). The digital logic achieves an average power dissipation of 0.37uW/gate/MHz, the paper covers this and other circuit and packaging techniques used to reduce power, Theta J-A, and junction temperature in this small package in order to enable a 10-year life-time, even in a continuous ambient temperature of 70°C.