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參數資料
| 型號： | WM8199 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 20MSPS 16-bit CCD Digitiser |
| 中文描述： | 20MSPS 16位數字化儀防治荒漠化公約 |
| 文件頁數： | 1/30頁 |
| 文件大?。?/td> | 358K |
| 代理商： | WM8199 |
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WM8199
20MSPS 16-bit CCD Digitiser
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Production Data, November 2003, Rev 3.2
Copyright
2003 Wolfson Microelectronics plc
DESCRIPTION
The WM8199 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 20MSPS.
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 WM8199 typically
only consumes 358mW when operating from a single
5V supply.
FEATURES
16-bit ADC
20MSPS conversion rate
30MSPS conversion rate at 8-bits
Low power – 358mW typical
5V 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)
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
SCK
VSMP
MCLK
VRLC/VBIAS
SDI
RLC/ACYC
DVDD2
TIMING CONTROL
CL
RLC
V
S
R
S
BINP
GINP
VRX
VRT
OEB
M
U
X
VRB
RLC
RLC
CDS
CDS
CDS
RLC
DAC
4
CONFIGURABLE
SERIAL
CONTROL
INTERFACE
16-
BIT
ADC
AGND1
DGND
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
8
8
PGA
8
8
OFFSET
DAC
PGA
8
OFFSET
DAC
8
+
+
+
+
+
I/P SIGNAL
POLARITY
ADJUST
I/P SIGNAL
POLARITY
ADJUST
AVDD
w
WM8199
OFFSET
DAC
相關PDF資料 |
PDF描述 |
|---|---|
| WM8199CDR | TVS BIDIRECT 400W 60V SMA |
| WM8199CDS | TVS UNIDIRECT 400W 64V SMA |
| WM8199SCDR | 20MSPS 16-bit CCD Digitiser |
| WM8199SCDS | 20MSPS 16-bit CCD Digitiser |
| WM8716 | High Performance 24-bit, 192kHz Stereo DAC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8199_07 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:20MSPS 16-bit CCD Digitiser |
| WM8199CDR | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:20MSPS 16-bit CCD Digitiser |
| WM8199CDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:20MSPS 16-bit CCD Digitiser |
| WM8199SCDR | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:20MSPS 16-bit CCD Digitiser |
| WM8199SCDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:20MSPS 16-bit CCD Digitiser |
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