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參數資料
| 型號： | WM8146 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | TVS 400W 40A UNIDIRECT SMA |
| 中文描述： | 12位（8 4位）線性傳感器圖像處理器 |
| 文件頁數： | 1/17頁 |
| 文件大小： | 195K |
| 代理商： | WM8146 |
WM8146
12-bit (8+4-bit) Linear Sensor Image Processor
Product Preview, January 2000 Rev 1.1
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
Product Preview
data sheets contain
specifications for products in the formative
phase of development. These products may
be changed or discontinued without notice.
1999 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8146 is a 12-bit analogue front end/digitiser IC,
which processes and digitises the analogue output signals
from linear CCD sensors 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. The output from each of these
channels is time multiplexed into a single high-speed 12-bit
Analogue to Digital Converter. The digital output data is
available in 8+4-bit wide multiplexed format, with no missing
codes.
The WM8146 is controlled via a configurable serial
interface, which is compatible with all of Wolfson’s imaging
devices.
Powered from an analogue supply voltage of 5V and a
digital interface supply of either 5V or 3.3V, the WM8146
typically only consumes 175mW when operating from 5V
supplies.
FEATURES
No missing codes guaranteed
6MSPS sample rate
Colour pixel by pixel or line by line sampling
Monochrome sampling
Selectable reset level clamp voltage
Pixel by pixel or line by line clamping
Correlated double sampling
5-bit programmable gain amplifier
8-bit + sign offset adjustment
5V or 3.3V digital interface compatibility
Serial control interface
28-pin SOIC package
APPLICATIONS
Flatbed scanners
Multi-function peripherals
Copier scanners
CCD sensor interfaces
BLOCK DIAGRAM
+
+
OFFSET
+
+
+
+
M
U
X
RINP
GINP(28)
BINP(27)
TIMING CONTROL
VSMP
(5)
MCLK
(7)
RLC
(6)
DGND
(8)
12-bit
ADC
8+4
MUX
CONFIGURABLE
SERIAL CONTROL
INTERFACE
SDI
SCK
SEN
MUX
VMID
VRLC
(26)
VRT
(24)
VRB
(23)
VMID
(25)
CL
RS
VS
AGND2
(2)
VMID
OFFSET
OFFSET
PGA
PGA
5-BIT REG
CDS
5-BIT REG
5-BIT REG
PGA
VMID
VMID
CDS
CDS
S/H
S/H
S/H
S/H
S/H
S/H
8-BIT +
SIGN DAC
8-BIT +
SIGN DAC
8-BIT +
SIGN DAC
WM8146
DVDD1
(3)
DVDD2
(10)
AGND1
(22)
AVDD
(21)
(9)
(12)
(11)
OEB
(4)
(13) OP[0]
(14) OP[1]
(16)
OP[6]
(18)
OP[2]
OP[3]
OP[4]
(1)
相關PDF資料 |
PDF描述 |
|---|---|
| WM8148 | TVS BIDIRECT 400W 5.0V SMA |
| WM8150 | DIODE TVS 400W 5V UNI DIR |
| WM8150CDS | SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8150CDSR | SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8170 | 5.0 VOLT BI-DIRECTIONAL TRANSIENT VOLTAGE SUPPRESSOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8148 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:12-bit/12MSPS CCD/CIS Analogue Front End/Digitiser |
| WM8150 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8150_05 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Single Channel 12-bit CIS/CCD AFE with 4-bit Wide Output |
| WM8150CDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT |
| WM8150CDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:Single Channel 12-bit CIS/CCD AFE with 4-bit Wide Output |
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