GENERAL DESCRIPTION
The TDA8785 is an 8-bit analog-to-digital converter with gain and offset controls for the input signal. An internal 8-bit DAC provides fast offsets control.

FEATURES
• 8-bit analog-to-digital converter (ADC)
• 8-bit digital-to-analog converter (DAC)
• Sampling rate up to 30 Msps for both ADC and DAC
• Binary or two’s complement 3-state TTL outputs
• TTL compatible inputs and outputs
• 100 MHz variable gain amplifier (0 to 20 dB) externally controlled
• All analog inputs and outputs are differential (can also be used in single-ended format)
• Analog input signal from 0.1 to 1.0 V (p-p) differential
• Offset amplifier with:
    – Slow offset control (±250 mV)
    – Fast offset control (±500 mV) eventually driven by internal DAC.
• ADC output code of 8 (typ.) when analog input signal and offset correction inputs are 0 V
• Gain, slow offset control inputs and DAC output swing of 1.5 V (p-p) range (2.75 ±0.75 V)
• 2.75 V reference voltage
• Internal references for ADC and DAC.

APPLICATIONS
• CCD type of systems
• Scanner
• Copier
• Video acquisition.