Description: Digital BTSC Encoder with Integrated ADC and DAC<<<>>><<<>>>The AD1970 is a complete analog- or digital-in, analog-out BTSC encoder which includes pilot-tone generation and sub-carrier mixing functions. The stereo ADC provides the means for digitization of the analog baseband audio signal. A built-in high performance DAC is provided to output the BTSC base-band composite signal. The output of the AD1970 can be connected with minimal external circuitry to the input of a 4.5 MHz aural FM modulator. <<<>>><<<>>>In addition to the digital BTSC encoder, the AD1970 includes a stereo image enhancement function, Phat Stereo, to increase the sense of spaciousness available from closely spaced TV loudspeakers. A dialog enhancement algorithm solves the problem of playing wide dynamic range sources over limited-performance TV speakers and amplifiers. An I2C port allows control of the AD1970’s registers and parameters<<<>>><<<>>>Specifications <<<>>>Dynamic Range (w. A-weighted filter, dB) (change from "DNR") 87dB <<<>>>SNR (w/ A-weighted filter, dB) 87dB <<<>>>THD+N (dB) 83dB <<<>>># of DACs - <<<>>>Digital Output Channels - <<<>>>Description Complete BTSC TV Stereo encoder
