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參數(shù)資料
| 型號： | WM8214 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | 40MSPS 16 BIT CCD DIGITISER |
| 中文描述： | 防治荒漠化公約40MSPS 16位數(shù)字化儀 |
| 文件頁數(shù)： | 1/35頁 |
| 文件大小： | 441K |
| 代理商： | WM8214 |
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WM8214
40MSPS 16-bit CCD Digitiser
DESCRIPTION
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Product Preview, March 2004, Rev 1.6
Copyright
2004 Wolfson Microelectronics plc.
The WM8214 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 40MSPS.
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-bit wide multiplexed format and there is also
an optional single byte output mode, or 4-bit multiplexed
LEGACY mode.
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 3.3V and a digital
interface supply of 3.3V, the WM8214 typically only
consumes 390mW.
FEATURES
16-bit ADC
40MSPS conversion rate
Low power – 390mW typical
3.3V single supply operation
Single, 2 or 3 channel operation
Correlated double sampling
Programmable gain (9-bit resolution)
Programmable offset adjust (8-bit resolution)
Flexible clamp control with programmable clamp voltage
Flexible timing, can be made compatible with WM819X
and WM815X parts.
8-bit wide multiplexed data output format
8-bit only output mode
4-bit LEGACY multiplexed nibble mode
Internally generated voltage references
28-pin SSOP package, pin compatible with WM8199
Serial control interface
APPLICATIONS
High speed USB2.0 compatible scanners
Multi-function peripherals
High-performance CCD sensor interface
Digital Copiers
BLOCK DIAGRAM
RINP
DATA
O/P
PORT
SEN
SCK
VSMP
MCLK
VRLC/VBIAS
SDI
DVDD2
TIMING CONTROL
CLMP
RLC
V
S
R
S
BINP
GINP
VRX
VRT
OEB
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
9
8
PGA
9
8
OFFSET
DAC
PGA
9
OFFSET
DAC
8
+
+
+
+
+
I/P SIGNAL
POLARITY
ADJUST
I/P SIGNAL
POLARITY
ADJUST
AVDD
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WM8214
OFFSET
DAC
RSMP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| WM8214CDR | 40MSPS 16 BIT CCD DIGITISER |
| WM8214CDS | 40MSPS 16 BIT CCD DIGITISER |
| WM8214SCDR | 40MSPS 16 BIT CCD DIGITISER |
| WM8214SCDS | 40MSPS 16 BIT CCD DIGITISER |
| WM8510GEDS | MONO CODEC WITH SPEAKER DRIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| WM8214_07 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS 16-bit CCD Digitiser |
| WM8214CDR | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS 16 BIT CCD DIGITISER |
| WM8214CDS | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS 16 BIT CCD DIGITISER |
| WM8214CDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS 16 BIT CCD DIGITISER |
| WM8214SCDR | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:40MSPS 16 BIT CCD DIGITISER |
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