GENERAL DESCRIPTION
The TDA8755 is a bipolar 8-bit video low-power analog-to-digital conversion (ADC) interface for YUV signals. The device converts the YUV analog input signal into 8-bit coded digital words in a 4 : 1 : 1 format at a sampling rate of 20 MHz. The U/V signals are converted in a multiplexed manner. All analog signal inputs are digitally clamped and a fast precharge is provided for start-up. All digital inputs and outputs are TTL compatible. Frame synchronization is supported in a multiplexed manner.

FEATURES
• 8-bit resolution
• Sampling rate up to 20 MHz
• TTL compatible digital inputs
• 3-state TTL outputs
• U, V twos complement outputs
• Y binary output
• Power dissipation of 550 mW (typical)
• Low analog input capacitance, no buffer amplifier required
• High signal-to-noise ratio over a large analog input frequency range
• Track-and-hold included
• Clamp functions included
• UV multiplexed ADC
• 4 : 1 : 1 output data encoder
• Stable voltage regulator included.

APPLICATIONS
• High speed analog-to-digital conversion for video signal digitizing
• 100 Hz improved definition TV (IDTV).