XRD98L61 Datasheet | Exar

FEATURES - 12-Bit Resolution ADC - 20MHz Sampling Rate - 10-Bit Programmable Gain: 0d B to 36d B PGA - Digitally Controlled Offset-Calibration with Pixel Averager and Hot Pixel Clipper - Widest Black Level Calibration Range at Maximum Gain - DNS Filter Removes Black Level Digital Noise - Manual Control of Offset DAC via Serial Port for use with High-speed Scanners - 1ns/step Programmable Aperture Delay on SPIX, SBLK and ADCLK Sampling Clocks - Single 2.7V to 3.6V Power Supply - Optimized Power Consumption down to 125m W with External Resistor - Low Power for Battery Operation - Two Serially Controlled 8-Bit D/A Converters - - - - 0.1m A Stand-by Mode Current Three-state Digital Outputs 2,000V ESD Protection 48-Pin TQFP Package APPLICATIONS - Mega-pixel Digital Still Cameras - - - - - - - - - Digital Camcorders 3-CCD Professional/Broadcast Camera Line Scan Cameras PC Video Cameras CCTV/Security Cameras Industrial/Medical Cameras 2D Bar Code Readers High Speed Scanners Digital Copiers GENERAL DESCRIPTION The XRD98L61 is a plete, low power CCD Image Digitizer for digital motion and still cameras. The product includes a high bandwidth differential Correlated Double Sampler (CDS), 10-bit digitally Programmable Gain Amplifier (PGA), 12-bit Analog-to-Digital Converter (ADC) and improved digitally controlled black level auto-calibration circuitry with programmable pixel averager, hot pixel clipper, and a DNS filter. Two 8-bit serial controlled digital-to-analog converter (DACs) are provided to control external analog signals (Iris, Focus, Flash, etc.) The Correlated Double Sampler (CDS) subtracts the CCD output signal black level from the video level. mon mode signal and power supply noise are rejected by the differential CDS input stage. The PGA is digitally controlled with 10-bit resolution on a linear d B scale, resulting in a gain range of 0d B to 36d B with 0.047d B per LSB of the gain code. The auto calibration circuit pensates for any internal offset of the XRD98L61 as...