WM8148 datasheet(14/43 Pages) WOLFSON

Part #	WM8148

Description	12-bit/12MSPS CCD/CIS Analogue Front End/Digitiser

PDF	43 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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14 / 43 page

WM8148

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 4.0 April 1999

SYSTEM INFORMATION

Figure 13 shows a system block diagram for a typical application. The CCD image sensor contains

three parallel linear arrays of sensor elements (sensitive to Red, Green, and Blue light respectively).

The Red, Green and Blue output signals are each applied to the RINP, GINP and BINP channel inputs

respectively of the WM8148. Each of these channels provide gain adjust, for compensation of sensor

sensitivity and offset adjust for nulling out d.c. offset voltages. The outputs of these three channels are

time multiplexed into a single 12-bit resolution ADC. The digital output is then transferred to a digital

ASIC or other digital processor. The corrected data can then be compressed if required before being

output to a data storage device or a monitor.

BUFFER

WM8148

SYSTEM

ASIC

BUFFER

SENSOR TIMING

DATA

CLOCKS

RINP

GINP

BINP

CONTROL I/F

Figure 13 System Diagram

WM8148 Datasheet(PDF) 14 Page - Wolfson Microelectronics plc