WM8141CFTSLASHV datasheet(1/31 Pages) WOLFSON

tên linh kiện	WM8141CFT/V

Giải thích chi tiết về linh kiện	12-bit 6MSPS CIS/CCD Analogue Front End/Digitiser

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WM8141

12-bit 6MSPS CIS/CCD Analogue Front End/Digitiser

Production Data, October 2000, Rev 3.0

WOLFSON MICROELECTRONICS LTD

Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK

Tel: +44 (0) 131 667 9386

Fax: +44 (0) 131 667 5176

Email: sales@wolfson.co.uk

http://www.wolfson.co.uk

Production Data Datasheets contain final

specifications current on publication date.

Supply of products conforms to Wolfson

Microelectronics’ Terms and Conditions.

2000 Wolfson Microelectronics Ltd.

DESCRIPTION

The WM8141 is a 12-bit analogue front end/digitiser that

processes and digitises the analogue output signals from

CCDs or Contact Image Sensors (CIS). The device can be

operated as either a three channel or a single channel

device at pixel sample rates of up to 6MSPS. The device

has both external and programmable internal black level

reference options for CIS operation. The WM8141 runs off a

single supply voltage of either 3.3V or 5V. Alternatively, the

device can be operated from split 5V core and 3.3V digital

interface supplies.

The WM8141 includes three analogue signal processing

channels each of which contains reset level clamping,

correlated double sampling and programmable offset and

gain adjust facilities. Each of these channels is time

multiplexed into a single high-speed 12-bit resolution ADC,

which digitises the pixel image information. The digital data

output is available to the user in either 12-bit parallel or

8/6/4-bit wide multiplexed formats.

The internal control registers are programmable via a

convenient serial or parallel digital interface. The WM8141

typically consumes only 45mA and less than 10

µA when in

power down mode.

FEATURES

•

12-bit resolution ADC

•

6MSPS conversion rate at 5V supply

•

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

•

Single or 3 channel operation

•

Correlated double sampling

•

Programmable gain (8-bit resolution)

•

Programmable offset adjust (8-bit resolution)

•

12-bit parallel or 8/6/4-bit wide multiplexed output bus

•

Internally generated voltage references

•

External or internal reference for CIS operation

•

Low power – 225mW typical at 5V supply

•

Interface and timing compatible with WM8143, WM8144

and WM8142 devices

•

Drop in replacement for WM8143-12

•

32-pin TQFP package

APPLICATIONS

• Flatbed and sheetfeed scanners

• USB compatible scanners

• Multi-function peripherals

• CCD sensor interface

• Contact image sensor (CIS) interface

BLOCK DIAGRAM

M

U

X

RINP (21)

DATA

I/O

PORT

(23) SEN/STB

VSMP

(27)

MCLK

(28)

VRLC/VBIAS

(18)

(24) SDI/DNA

(25) SCK/RNW

DVDD2

(32)

TIMING CONTROL

CL

(26) RLC/ACYC

RLC

V

S

R

S

BINP (19)

GINP (20)

VRX

(17)

VRT

(16)

VREF/BIAS

(22) OEB

M

U

X

M

U

X

(11) NRESET

VRB

(15)

RLC

CDS

R

G

B

M

U

X

R

G

B

+

PGA

I/P SIGNAL

POLARITY

ADJUST

8

OFFSET

DAC

PGA

8

OFFSET

DAC

PGA

8

OFFSET

DAC

RLC

DAC

8

4

+

CONFIGURABLE

SERIAL/

PARALLEL

CONTROL

INTERFACE

12

BIT

ADC

(13)

AGND

(29)

DGND

AVDD

(12)

DVDD1

(14)

(30) OP[0]

(31) OP[1]

(1) OP[2]

(2) OP[3]

(3) OP[4]

(4) OP[5]

(5) OP[6]

(6) OP[7]

(7) OP[8]

(8) OP[9]

(9) OP[10]

(10) OP[11]/SDO

+

I/P SIGNAL

POLARITY

ADJUST

I/P SIGNAL

POLARITY

ADJUST

WM8141

Số phần tương tự - WM8141CFT/V

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Wolfson Microelectronic...	WM8143-10	491Kb / 24P	10-bit/6MSPS CCD Signal Processor
	WM8143-10CFT/V	491Kb / 24P	10-bit/6MSPS CCD Signal Processor
	WM8143-12	379Kb / 24P	12-bit/4MSPS CCD Signal Processor
	WM8143-12CFT/V	379Kb / 24P	12-bit/4MSPS CCD Signal Processor
	WM8144	395Kb / 27P	Integrated 10-bit Data Acquisition system for Imaging Applications

More results

Mô tả tương tự - WM8141CFT/V

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Wolfson Microelectronic...	WM8148	491Kb / 43P	12-bit/12MSPS CCD/CIS Analogue Front End/Digitiser
	WM8181	150Kb / 14P	12-bit 2MSPS Serial Output CIS/CCD Digitiser
	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
	WM8198	379Kb / 31P	(8 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER
	WM8196	366Kb / 30P	(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
	WM8196	381Kb / 32P	(8 8) Bit Output 16-bit CIS/CCD AFE/Digitiser

More results

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