WM8198SCDSSLASHR datasheet(1/31 Pages) WOLFSON

部件名	WM8198SCDS/R

功能描述	(8 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER

PDF	31 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

标志

1 / 31 page

w

WM8198

(8 + 8) Bit Output 16-bit CIS/CCD AFE/Digitiser

WOLFSON MICROELECTRONICS plc

w :: www.wolfsonmicro.com

Production Data, June 2004, Rev 4.0

Copyright

2002 Wolfson Microelectronics plc

DESCRIPTION

The WM8198 is a 16-bit 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 6MSPS.

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. Three multiplexers allow single

channel processing. The output from each of these

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

Analogue to Digital Converter. The digital output data is

available in 8 or 4-bit wide multiplexed format.

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

generation. This may be used during CDS to reference CIS

signals or during Reset Level Clamping to clamp CCD

signals. An external reference level may also be supplied.

ADC references are generated internally, ensuring optimum

performance from the device.

Using an analogue supply voltage of 5V and a digital

interface supply of either 5V or 3.3V, the WM8198 typically

only consumes 195mW when operating from a single

5V supply.

FEATURES

•

16-bit ADC

•

6MSPS conversion rate

•

Low power – 212mW typical

•

5V single supply or 5V/3.3V dual supply operation

•

Single or 3 channel operation

•

Correlated double sampling

•

Dual Range Programmable Gain Amplifier (9-bit resolution)

•

Programmable offset adjust (8-bit resolution)

•

Programmable clamp voltage

•

8 or 4-bit wide multiplexed data output formats

•

Internally generated voltage references

•

28-pin SSOP package

•

Serial control interface

APPLICATIONS

•

Flatbed and sheetfeed scanners

•

USB compatible scanners

•

Multi-function peripherals

•

High-performance CCD sensor interface

BLOCK DIAGRAM

RINP

DATA

I/O

PORT

SEN

VSMP

MCLK

VRLC/VBIAS

SDI

SCK

DVDD2

TIMING CONTROL

CL

RLC/ACYC

RLC

V

S

R

S

BINP

GINP

VRX

VRT

OEB

M

U

X

VRB

RLC

CDS

4

CONFIGURABLE

SERIAL

CONTROL

INTERFACE

ADC

AGND1

DGND

AVDD

DVDD1

OP[0]

OP[1]

OP[2]

OP[3]

OP[4]

OP[5]

OP[6]

OP[7]/SDO

AGND2

M

U

X

VREF/BIAS

M

U

X

R

G

B

M

U

X

R

G

B

+

PGA

I/P SIGNAL

POLARITY

ADJUST

9

8

PGA

9

8

PGA

9

8

+

I/P SIGNAL

POLARITY

ADJUST

I/P SIGNAL

POLARITY

ADJUST

OFFSET

DAC

OFFSET

DAC

OFFSET

DAC

RLC

DAC

w

WM8198

类似零件编号 - WM8198SCDS/R

制造商	部件名	数据表	功能描述
Wolfson Microelectronic...	WM8190	438Kb / 25P	(86) Bit Output 14-bit CIS/CCD AFE/Digitiser
	WM8191	355Kb / 27P	14-bit 6MSPS CIS/CCD Analogue Front End/Digitiser
	WM8192	619Kb / 24P	(88) Bit Output 16-bit CIS/CCD AFE/Digitiser
	WM8195	334Kb / 31P	14-bit 12MSPS CIS/CCD Analogue Front End/Digitiser
	WM8195	382Kb / 33P	14-bit 12MSPS CIS/CCD Analogue Front End/Digitiser

More results

类似说明 - WM8198SCDS/R

制造商	部件名	数据表	功能描述
Wolfson Microelectronic...	WM8181	150Kb / 14P	12-bit 2MSPS Serial Output CIS/CCD Digitiser
	WM8190	438Kb / 25P	(86) Bit Output 14-bit CIS/CCD AFE/Digitiser
	WM8192	619Kb / 24P	(88) Bit Output 16-bit CIS/CCD AFE/Digitiser
	WM8196	366Kb / 30P	(88)BIT OUTPUT 16-BIT CIS/CCD AFE/DIGITISER
	WM8152	284Kb / 26P	Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output
	WM8152	314Kb / 28P	Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output
	WM8196	381Kb / 32P	(8 8) Bit Output 16-bit CIS/CCD AFE/Digitiser
	WM8259	353Kb / 26P	Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output
Cirrus Logic	WM8196	475Kb / 32P	(8 8) Bit Output 16-bit CIS/CCD AFE/Digitiser
Cirrus Logic	WM8253	278Kb / 27P	Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output