HMP8170, HMP8171, HMP8172, HMP8173 Data Sheet May 1999 File Number 4284.
5 NTSC/PAL Video Encoder The HMP8170, HMP8171, HMP8172, and HMP8173 NTSC and PAL encoders are designed for use in systems requiring the generation of high-quality NTSC and PAL video.
YCbCr digital video data drive the P0-P15 inputs.
The Y data is optionally lowpass filtered to 6MHz and drives the Y analog output.
Cb and Cr are each lowpass filtered to 1.
3MHz, quadrature modulated, and added together.
The result drives the C analog output.
The digital Y and C data are also added together and drive the two composite analog outputs.
The DACs can drive doubly-terminated (37.
5Ω) lines, and run at a 2x oversampling rate to si...

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