WM8224 datasheet(1/50 Pages) WOLFSON

номер детали	WM8224

подробное описание детали	60MSPS 3-Channel AFE with Multiple Device Operation and Programmable Automatic Black Level Calibration

PDF	50 Pages

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производитель	WOLFSON [Wolfson Microelectronics plc]

домашняя страница	http://www.wolfsonmicro.com

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WM8224

60MSPS 3-Channel AFE with Multiple Device Operation

and Programmable Automatic Black Level Calibration

WOLFSON MICROELECTRONICS plc

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Production Data, June 2012, Rev 4.1

Copyright

2012 Wolfson Microelectronics plc.

DESCRIPTION

The WM8224 is an analogue front end/digitiser IC which

processes and digitises the analogue output signals from

CCD sensors or Contact Image Sensors (CIS) at pixel

sample rates of up to 60MSPS.

The device includes three analogue signal processing

channels each of which contains Reset Level Clamping,

Correlated Double Sampling and Programmable Gain and

Offset adjust functions. The output from each of these

channels is time multiplexed into a single high-speed 16-bit

Analogue to Digital Converter. The digital data is available in

a variety of output formats via the flexible data port.

An internal 4-bit DAC is supplied for internal reference level

generation. This may be used during CDS to reference CIS

signals or during Clamping to clamp CCD signals. An

external reference level may also be supplied. ADC

references are generated internally, ensuring optimum

performance from the device.

A programmable automatic Black-Level Calibration function

is available to adjust the DC offset of the output data. A

daisy chain feature allows multiple devices to operate

together using the same control interface and output data

bus.

FEATURES



12 or 16-bit ADC, 40MSPS conversion rate



8 or 10-bit ADC, 60MSPS conversion rate



Low power – 360 mW typical



3.3V single supply operation



3 channel operation



Daisy Chain feature for multiple device use



Correlated double sampling



Programmable gain (9-bit resolution)



Programmable offset adjust (8-bit resolution)



Flexible clamp timing



Programmable clamp voltage



Internally generated voltage references



Automatic Black Level Calibration



32-lead QFN package



Serial control interface

APPLICATIONS



Digital Copiers



USB2.0 compatible scanners



Multi-function peripherals



High-speed CCD/CIS sensor interface

BLOCK DIAGRAM

Аналогичный номер детали - WM8224

производитель	номер детали	датащи	подробное описание детали
Cirrus Logic	WM8224	847Kb / 50P	60MSPS 3-Channel AFE with Multiple Device Operation

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Аналогичное описание - WM8224

производитель	номер детали	датащи	подробное описание детали
Texas Instruments	LMP90080-Q1	1Mb / 65P	Multi-Channel 16-Bit Sensor AFE with Background Calibration
Cirrus Logic	WM8224	847Kb / 50P	60MSPS 3-Channel AFE with Multiple Device Operation
OmniVision Technologies...	OV9281	683Kb / 2P	automatic black level calibration (ABLC)
	OV9282	683Kb / 2P	automatic black level calibration (ABLC)
	OV9760	610Kb / 2P	automatic black level calibration (ABLC)
TT Electronics.	OCB100	446Kb / 4P	Automatic Calibration Circuitry
OmniVision Technologies...	OV4686	827Kb / 2P	automatic black level calibration (ABLC)
	OV4685	5Mb / 2P	automatic black level calibration (ABLC)
	OV9284	625Kb / 2P	automatic black level calibration (ABLC)
	OV9782	678Kb / 2P	automatic black level calibration (ABLC)

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