BL8531H

BL8531H AFE FOR CCD/CIS SIGNAL PROCESSOR GENERAL DESCRIPTION The samsung analog front end(AFE) for CCD/CIS image signal is an integrated analog signal processor for color image signal. The AFE converts CCD/CIS output signal to digital data. The AFE includes three-channel CDS(Correlated Double Sampling) circuit, PGA(Programmable Gain Amplifier), and 12-bit analog to digital converter with reference generator. A parallel data bus provides a simple interface to 8-bit microcontroller. APPLICATIONS Color and B/W Scanner Digital Copiers Facsimile General Purpose CCD/CIS imager FETURES 12-bit 6MSPS A/D Converter Integrated Triple Correlated Double Sampler 3-Channel 2 MSPS Color Mode Analog Programmble Gain Amplifier Internal Voltage Reference Wide clamp level controllability for CIS sensor No Missing Code Guaranteed Microcontroller-Compatible Control Interface Operation by Single 5V Supply CMOS Low Power Dissipation KEY SPECIFICATION Resolution: 12-bit Conversion Rate: 6 MHz(2 MHz*3) Supply Voltage: 5 V ± 5% Power Dissipation: 375 mW(Typical) 1 AFE FOR CCD/CIS SIGNAL PROCESSOR BL8531H FUNCTIONAL BLOCK DIAGRAM RED CDS PGA REF GREEN INPUT OFFSET REGISTER CDS PGA MUX ADC D[11:0] MPU PORT BLUE CDS PGA GAIN REGISTER Ver 2.0 (Apr. 2002) No responsibility is assumed by SEC for its use nor for any infringements of patents or other rights of third parties that may result from its use. The content of this datasheet is subject to change without a...