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WM8150 PDF даташит

Спецификация WM8150 изготовлена ​​​​«Wolfson Microelectronics plc» и имеет функцию, называемую «SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT».

Детали детали

Номер произв WM8150
Описание SINGLE CHANNEL 12 BIT CIS/CCD AFE WITH 4 BIT WIDE OUTPUT
Производители Wolfson Microelectronics plc
логотип Wolfson Microelectronics plc логотип 

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WM8150 Даташит, Описание, Даташиты
WM8150
Single Channel 12-bit CIS/CCD AFE with 4-bit Wide Output
DESCRIPTION
The WM8150 is a 12-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 8MSPS.
The device includes a complete analogue 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 channel is time multiplexed into a high-speed 12-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.
Using an analogue supply voltage of 5V, a digital core
voltage of 5V, and a digital interface supply of either 5V or
3.3V, the WM8150 typically only consumes 160mW when
operating from a single 5V supply.
BLOCK DIAGRAM
FEATURES
12-bit ADC
8MSPS conversion rate
Low power - 170mW typical
5V single supply or 5V/3.3V dual supply operation
Single channel operation
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-pin SSOP package
Serial control interface
APPLICATIONS
Flatbed and sheetfeed scanners
USB compatible scanners
Multi-function peripherals
High-performance CCD sensor interface
VSMP MCLK
AVDD DVDD1 DVDD2
VRT VRX VRB
CL RS VS TIMING CONTROL
VREF/BIAS
VINP
VRLC/VBIAS
RLC
CDS
RLC 4
DAC
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
R M 8 OFFSET
GU
X
DAC
B
RM
GU
X
B
+ PGA
I/P SIGNAL
8 POLARITY
ADJUST
+
W
WM8150
12-
BIT
ADC
DATA
I/O
PORT
OP[0]
OP[1]
OP[2]
OP[3]/SDO
CONFIGURABLE
SERIAL
CONTROL
INTERFACE
SEN
SCK
SDI
AGND1
AGND2
DGND
Production Data, November 2002, Rev 3.0
Copyright 2002 Wolfson Microelectronics plc









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WM8150 Даташит, Описание, Даташиты
WM8150
PIN CONFIGURATION
AGND2 1
DVDD1 2
VSMP 3
MCLK 4
DGND 5
SEN 6
DVDD2 7
SDI 8
SCK 9
OP[0] 10
WM8150
20 VINP
19 VRLC/VBIAS
18 VRX
17 VRT
16 VRB
15 AGND1
14 AVDD
13 OP[3]/SDO
12 OP[2]
11 OP[1]
Production Data
ORDERING INFORMATION
DEVICE
WM8150CDS
TEMP. RANGE
0 to 70oC
WM8150CDS/R
Note:
Reel quantity = 2,000
0 to 70oC
PACKAGE
20-pin SSOP
20-pin SSOP
(tape and reel)
PIN DESCRIPTION
PIN NAME
TYPE
DESCRIPTION
1 AGND2
Supply
Analogue ground (0V).
2 DVDD1
Supply
Digital core (logic and clock generator) supply (5V)
3
VSMP
Digital input Video sample synchronisation pulse.
4
MCLK
Digital input Master clock. This clock is applied at N times the input pixel rate (N = 2, 3, 6, 8 or
any multiple of 2 thereafter depending on input sample mode).
5 DGND
Supply
Digital ground (0V).
6
SEN
Digital input Enables the serial interface when high.
7 DVDD2
Supply
Digital supply (5V/3.3V), all digital I/O pins.
8 SDI Digital input Serial data input.
9
SCK
Digital input Serial clock.
Digital multiplexed output data bus.
ADC output data (d11:d0) is available in 4-bit multiplexed format as shown below.
A BC
D
10
OP[0]
Digital output
d8
d4 d0 OVRNG
11
OP[1]
Digital output
d9
d5 d1 CC0
12
OP[2]
Digital output
d10
d6
d2
CC1
13 OP[3]/SDO Digital output
d11
d7
d3
0
Alternatively, pin OP[3]/SDO may be used to output register read-back data when
address bit 4=1 and SEN has been pulsed high. See Serial Interface description in
Device Description section for further details.
14 AVDD
Supply
Analogue supply (5V)
15 AGND1
Supply
Analogue ground (0V).
16
VRB
Analogue output Lower reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
17
VRT
Analogue output Upper reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
18
VRX
Analogue output Input return bias voltage.
This pin must be connected to AGND via a decoupling capacitor.
19 VRLC/VBIAS Analogue I/O Selectable analogue output voltage for RLC or single-ended bias reference.
This pin would typically be connected to AGND via a decoupling capacitor.
VRLC can be externally driven if programmed Hi-Z.
20
VINP
Analogue input Video input.
w
PD Rev 3.0 November 2002
2









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WM8150 Даташит, Описание, Даташиты
Production Data
WM8150
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at
or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical
Characteristics at the test conditions specified.
ESD Sensitive Device. This device is manufactured on a CMOS process. It is therefore generically susceptible
to damage from excessive static voltages. Proper ESD precautions must be taken during handling and storage
of this device.
The WM8150 has been classified as MSL1, which has an unlimited floor life at <30oC / 85%C Relative Humidity and therefore will
not be supplied in moisture barrier bags.
CONDITION
MIN MAX
Analogue supply voltage: AVDD
GND - 0.3V
GND + 7V
Digital core voltage: DVDD1
GND - 0.3V
GND + 7V
Digital IO supply voltage: DVDD2
GND - 0.3V
GND + 7V
Digital ground: DGND
GND - 0.3V
GND + 0.3V
Analogue grounds: AGND1 2
GND - 0.3V
GND + 0.3V
Digital inputs, digital outputs and digital I/O pins
GND - 0.3V
DVDD2 + 0.3V
Analogue input (VINP)
GND - 0.3V
AVDD + 0.3V
Other pins
GND - 0.3V
AVDD + 0.3V
Operating temperature range: TA
Storage temperature prior to soldering
0°C +70°C
30oC max / 85% RH max
Storage temperature after soldering
Package body temperature (soldering, 10 seconds)
-65°C
+150°C
+260°C
Package body temperature (soldering, 2 minutes)
+183°C
Notes:
1. GND denotes the voltage of any ground pin.
2. AGND1, AGND2 and DGND pins are intended to be operated at the same potential. Differential voltages
between these pins will degrade performance.
RECOMMENDED OPERATING CONDITIONS
CONDITION
Operating temperature range
Analogue supply voltage
Digital core supply voltage
Digital I/O supply voltage
5V I/O
3.3V I/O
SYMBOL
TA
AVDD
DVDD1
DVDD2
DVDD2
MIN
0
4.75
4.75
4.75
2.97
TYP
MAX
UNITS
70 °C
5.0 5.25
V
5.0 5.25
V
5.0 5.25
3.3 3.63
V
V
w
PD Rev 3.0 November 2002
3










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