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WM8253SCDS/RV

更新时间： 2024-02-12 17:43:22
品牌 Logo 应用领域
欧胜 - WOLFSON 转换器光电二极管
页数 文件大小 规格书
27页 278K
描述
Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output

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中文翻译

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WM8253SCDS/RV 技术参数

是否Rohs认证： 符合生命周期：Transferred
Reach Compliance Code：unknown风险等级：5.57
Is Samacsys：N最大模拟输入电压：3.3 V
转换器类型：D/A CONVERTERJESD-30 代码：R-PDSO-G20
模拟输入通道数量：1位数：16
端子数量：20最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP20,.3
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
电源：3.3 V认证状态：Not Qualified
子类别：Other Converters标称供电电压：3.3 V
表面贴装：YES技术：CMOS
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
Base Number Matches：1

WM8253SCDS/RV 数据手册

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WM8253  
w
Single Channel 16-bit CIS/CCD AFE with 4-bit Wide Output  
DESCRIPTION  
FEATURES  
16-bit ADC  
The WM8253 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.  
6MSPS conversion rate  
Low power - 132mW typical  
3.3V single supply or 3.3V/2.5V dual supply operation  
Single channel operation  
The device includes a complete signal processing channel  
containing Reset Level Clamping, Correlated Double  
Sampling, Programmable Gain and Offset adjust functions.  
Internal multiplexers allow fast switching of offset and gain  
for line-by-line colour processing. The output from this  
Correlated double sampling  
Programmable gain (8-bit resolution)  
Programmable offset adjust (8-bit resolution)  
Programmable clamp voltage  
4-bit wide multiplexed data output format  
Internally generated voltage references  
20-lead SSOP package  
channel is time multiplexed into  
a high-speed 16-bit  
Analogue to Digital Converter. The digital output data is  
available in 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.  
Serial control interface  
APPLICATIONS  
Flatbed and sheetfeed scanners  
USB compatible scanners  
The device uses an analogue supply voltage of 3.3V and a  
digital interface supply of between 2.5V and 3.3V. The  
WM8253 typically only consumes 132mW when operating  
from a single 3.3V supply.  
Multi-function peripherals  
High-performance CCD sensor interface  
BLOCK DIAGRAM  
DVDD1  
VSMP MCLK  
AVDD  
DVDD2  
VRT  
VRB  
VREF/BIAS  
TIMING GENERATION AND CONTROL  
CL  
RS VS  
WM8253  
OP[0]  
OP[1]  
OP[2]  
OP[3]/SDO  
DATA  
I/O  
PORT  
VINP  
16-BIT  
ADC  
RLC  
CDS  
+
PGA  
+
8
I/P SIGNAL  
POLARITY  
ADJUST  
OFFSET  
DAC  
4
RLC  
DAC  
8
VRLC/VBIAS  
MUX  
MUX  
CONFIGURABLE  
SERIAL  
CONTROL  
R
G
B
R
G
B
SDI  
SCK  
SEN  
INTERFACE  
DGND  
AGND1  
AGND2  
WOLFSON MICROELECTRONICS plc  
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews  
Production Data, August 2011, Rev 4.1  
Copyright 2011 Wolfson Microelectronics plc  
1234567...27

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