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WM8198 PDF даташит

Спецификация WM8198 изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «(8 + 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER».

Детали детали

Номер произв WM8198
Описание (8 + 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8198 Даташит, Описание, Даташиты
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WM8198
(8 + 8) Bit Output 16-bit CIS/CCD AFE/Digitiser
DESCRIPTION
The WM8198 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.
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 WM8198 typically
only consumes 195mW when operating from a single
5V supply.
FEATURES
16-bit ADC
6MSPS conversion rate
Low power – 212mW typical
5V single supply or 5V/3.3V dual supply operation
Single or 3 channel operation
Correlated double sampling
Dual Range Programmable Gain Amplifier (9-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
VRLC/VBIAS
VSMP MCLK
AVDD DVDD1 DVDD2
VRT VRX VRB
RINP
GINP
CL
RLC
RLC
RS VS
M
U
X
TIMING CONTROL
CDS
RM
GU
X
B
8
RM
GU
X
B
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WM8198
VREF/BIAS
OFFSET
DAC
+ PGA
I/P SIGNAL
9 POLARITY
ADJUST
CDS
+ PGA
8 OFFSET
DAC
9 I/P SIGNAL
POLARITY
ADJUST
+
M
+U
X
ADC
DATA
I/O
PORT
OEB
OP[0]
OP[1]
OP[2]
OP[3]
OP[4]
OP[5]
OP[6]
OP[7]/SDO
BINP
RLC
RLC 4
DAC
CDS
+ PGA
+
8 OFFSET
DAC
9 I/P SIGNAL
POLARITY
ADJUST
CONFIGURABLE
SERIAL
CONTROL
INTERFACE
SEN
SCK
SDI
RLC/ACYC
AGND1
AGND2
DGND
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Production Data, June 2004, Rev 4.0
Copyright 2002 Wolfson Microelectronics plc









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WM8198 Даташит, Описание, Даташиты
WM8198
TABLE OF CONTENTS
Production Data
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
TABLE OF CONTENTS .........................................................................................2
PIN CONFIGURATION...........................................................................................3
ORDERING INFORMATION ..................................................................................3
ABSOLUTE MAXIMUM RATINGS.........................................................................5
RECOMMENDED OPERATING CONDITIONS .....................................................5
ELECTRICAL CHARACTERISTICS ......................................................................6
INPUT VIDEO SAMPLING ............................................................................................. 9
OUTPUT DATA TIMING ................................................................................................ 9
SERIAL INTERFACE ................................................................................................... 10
DEVICE DESCRIPTION.......................................................................................12
INTRODUCTION.......................................................................................................... 12
INPUT SAMPLING ....................................................................................................... 12
RESET LEVEL CLAMPING (RLC) ............................................................................... 12
CDS/NON-CDS PROCESSING ................................................................................... 13
OFFSET ADJUST AND PROGRAMMABLE GAIN....................................................... 14
ADC INPUT BLACK LEVEL ADJUST .......................................................................... 14
OVERALL SIGNAL FLOW SUMMARY ........................................................................ 15
CALCULATING OUTPUT FOR ANY GIVEN INPUT .................................................... 15
OUTPUT FORMATS .................................................................................................... 16
CONTROL INTERFACE .............................................................................................. 17
TIMING REQUIREMENTS ........................................................................................... 18
PROGRAMMABLE VSMP DETECT CIRCUIT ............................................................. 18
REFERENCES............................................................................................................. 19
POWER SUPPLY ........................................................................................................ 19
POWER MANAGEMENT ............................................................................................. 19
LINE-BY-LINE OPERATION ........................................................................................ 20
OPERATING MODES .................................................................................................. 21
OPERATING MODE TIMING DIAGRAMS ................................................................... 22
DEVICE CONFIGURATION .................................................................................25
REGISTER MAP .......................................................................................................... 25
REGISTER MAP DESCRIPTION ................................................................................. 26
APPLICATIONS INFORMATION .........................................................................29
RECOMMENDED EXTERNAL COMPONENTS........................................................... 29
PACKAGE DIMENSIONS ....................................................................................30
ADDRESS:................................................................................................................... 31
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PD Rev 4.0 June 2004
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WM8198 Даташит, Описание, Даташиты
WM8198
PIN CONFIGURATION
RINP
AGND2
DVDD1
OEB
VSMP
RLC/ACYC
MCLK
DGND
SEN
DVDD2
SDI
SCK
OP[0]
OP[1]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 GINP
27 BINP
26 VRLC/VBIAS
25 VRX
24 VRT
23 VRB
22 AGND1
21 AVDD
20 OP[7]/SDO
19 OP[6]
18 OP[5]
17 OP[4]
16 OP[3]
15 OP[2]
Production Data
ORDERING INFORMATION
DEVICE
WM8198CDS
TEMPERATURE
RANGE
0 to 70oC
WM8198CDS/R
0 to 70oC
WM8198SCDS
0 to 70oC
WM8198SCDS/R
0 to 70oC
Note:
Reel Quantity = 2,000
PACKAGE
28-pin SSOP
28-pin SSOP
(tape and reel)
28-pin SSOP
(lead free)
28-pin SSOP
(lead free, tape and reel)
MOISTURE
SENSITIVITY LEVEL
MSL1
MSL1
MSL1
MSL1
PEAK SOLDERING
TEMPERATURE
260oC
260oC
260oC
260oC
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PD Rev 4.0 June 2004
3










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