MP8775

CMOS 20 MSPS, 8-Bit, High Speed Analog-to-Digital Converter FEATURES · · · · · · · · · · 8-Bit Resolution 20 MHz Sampling Rate DNL = +1/2 LSB, INL = +1 LSB (typ) Internal S/H Function Single Supply: 5 V VIN DC Range: 0 V to VDD VREF DC Range: 1 V to VDD Low Power: 85 mW typ. (excluding reference) Latch-Up Free ESD Protection: 2000 V Minimum MP8775 March 1999-4 · Power Down Available: MP8776 · 3 V Version: MP87L75 · Small 20 Pin SOIC Package APPLICATIONS · · · · · Digital Color Copiers Cellular Telephones CCD’s Based Systems Hardware Scanners Video Capture Boards GENERAL DESCRIPTION The MP8775 is an 8-bit Analog-to-Digital Converter in a small 20 pin SOIC package. Designed using an advanced 5 V 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 MP8775 includes an on-chip S/H function and allows the user to digitize analog input signals between GND and VDD. 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 MP8775. 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 0.6 V at VRB and 2.6 V at VRT. Providing external ref...