AD775

a FEATURES CMOS 8-Bit 20 MSPS Sampling A/D Converter Low Power Dissipation: 60 mW +5 V Single Supply Operation Differential Nonlinearity: 0.3 LSB Differential Gain: 1% Differential Phase: 0.5 Degrees Three-State Outputs On-Chip Reference Bias Resistors Adjustable Reference Input Video Industry Standard Pinout Small Packages: 24-Pin 300 Mil SOIC Surface Mount 24-Pin 400 Mil Plastic DIP 18 AV DD VRTS 16 V RT 17 15 8-Bit 20 MSPS, 60 mW Sampling A/D Converter AD775 FUNCTIONAL BLOCK DIAGRAM AV DD 14 15 V IN 19 DV DD 13 11 10 D7 (MSB) 3-STATE OUTPUT LATCHES AD775 CORRECTION LOGIC COARSE COMPARATORS 4 9 8 7 6 5 4 3 D0 (LSB) 8 RREF FINE COMPARATORS BANK A LSB MULTIPLEXOR SWITCH MATRIX 5 255 V RB 23 FINE COMPARATORS BANK B V RBS 22 CLOCK LOGIC 20 21 12 CLK 1 AV SS OE 2 24 AV SS DV SS PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS The AD775 is a CMOS, low power, 8-bit, 20 MSPS sampling analog-to-digital converter (ADC). The AD775 features a builtin sampling function and on-chip reference bias resistors to provide a complete 8-bit ADC solution. The AD775 utilizes a pipelined/ping pong two-step flash architecture to provide high sampling rates (up to 35 MHz) while maintaining very low power consumption (60 mW). Its combination of excellent DNL, fast sampling rate, low differential gain and phase errors, extremely low power dissipation, and single +5 V supply operation make it ideally suited for a variety of video and image acquisition applications, including portable equip...