XRD8775

www.DataSheet4U.com CMOS 8-Bit High Speed Analog-to-Digital Converter April 2002-4 XRD8775 FEATURES · 8-Bit Resolution · Up to 20MHz Sampling Rate · Internal S/H Function · Single Supply: 5V · VIN DC Range: 0V to VDD · VREF DC Range: 1V to VDD · Low Power: 75mW typ. (excluding reference) · Latch-Up Free · ESD Protection: 2000V Minimum · 3V Version: XRD87L75 · Small 20-Pin SOIC/SSOP Packages APPLICATIONS · Digital Color Copiers · Cellular Telephones · CCD-Based Systems · Hardware Scanners · Video Capture Boards GENERAL DESCRIPTION The XRD8775 is an 8-bit Analog-to-Digital Converter in a small 20-pin SOIC/SSOP package. Designed using an advanced 5V CMOS process, this part offers excellent performance, low power consumption and latch-up free operation. This device uses a two-step flash architecture to maintain low power consumption at high conversion rates. The input circuitry of the XRD8775 includes an on-chip S/H function and allows the user to digitize analog input signals between AGND and AVDD. Careful design and chip layout have achieved a low analog input capacitance. This reduces “kickback” and eases the requirements of the buffer/amplifier used to drive the XRD8775. The designer can choose the internally generated reference voltages by connecting VRB to VRBS and VRT to VRTS , or provide external reference voltages to the VRB and VRT pins. The internal reference generates 0.6V at VRB and 2.6V at VRT. Providing external reference voltages allows easy interface to an...