WM8235 Datasheet PDF - Wolfson Microelectronics
| Part Number | WM8235 | |
| Description | 70MSPS 9-Channel AFE | |
| Manufacturers | Wolfson Microelectronics | |
| Logo |  |
|
|
There is a preview and WM8235 download ( pdf file ) link at the bottom of this page. Total 15 Pages | ||
Preview 1 page No Preview Available !
w
WM8235
70MSPS 9-Channel AFE with Sensor Timing Generation and
LVDS/CMOS Data Output
DESCRIPTION
The WM8235 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 23MSPS.
The device has nine analogue signal processing channels
each of which contains Reset Level Clamping, Correlated
Double Sampling (also Sample and Hold), Programmable
Gain, Automatic Gain Control (AGC) and Offset adjust
functions.
The output from each of these channels is time multiplexed,
in pairs, into three high-speed 16-bit Analogue to Digital
Converters. The digital data is available in a variety of
output formats via the flexible data port.
The WM8235 has a user selectable LVDS or CMOS output
architecture.
An internal 8-bit DAC is supplied for internal reference level
generation. This may be used during CDS to reference CIS
signals or during Clamping to clamp CCD signals. An
external reference level may also be supplied. ADC
references are generated internally, ensuring optimum
performance from the device.
A programmable automatic Black-Level Calibration function
is available to adjust the DC offset of the output data.
The WM8235 features a sensor timing clock generator for
both CCD and CIS sensors. The clock generator can accept
a slow or fast reference clock input and also has a flexible
timing adjustment function for output timing clocks to allow
use of many different sensors.
FEATURES
70MSPS conversion rate
16 bit ADC resolution
Current consumption – 390mA
3.3V single supply operation
Sample and hold /correlated double sampling
Programmable offset adjust (8-bit resolution)
Flexible clamp timing
Pixel clamp / line clamp mode
Programmable clamp voltage
Programmable CIS/CCD timing generator
Internally generated voltage references
Compliant for Spread Spectrum Clock
LVDS/CMOS output options
LVDS 5pair 490MHz 35-bit data
CMOS 90MHz output maximum
Complete on chip clock generator. MCLK 5MHz to 23MHz
Internal timing adjustment
Automatic Gain Control
Automatic Black Level Calibration
56-lead QFN package 7mm x 7mm
Serial control interface
APPLICATIONS
Digital copiers
USB2.0 compatible scanners
Multi-function peripherals
High-speed CCD/CIS sensor interface
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Product Brief, February 2012, Rev 3.0
Copyright 2012 Wolfson Microelectronics plc.
|
| |
 
WM8235
Product Brief
PIN DESCRIPTION
PIN NAME
Type
DESCRIPTION
1 VREF2C Analogue output Mid reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
2
VRLC
Analogue I/O Reference voltage input/output
3 VREF3C Analogue output Lower reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
4 VREF1C Analogue output Upper reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
5
SEN
Digital input Enables the serial interface when high.
6
SDO
Digital output Serial interface data output
7
SCK
Digital input Serial interface clock
8 SDI Digital input Serial interface data input
9 LDO2VDD
Supply
Analogue supply
10 LDO2GND
Supply
Analogue ground
11 LDO2VOUT
Supply
LDO output
This pin must be connected to AGND via a decoupling capacitor.
12
DSLCT2
Analogue input Device select 2
13
MCLK
Analogue input Master clock
14
DSLCT1
Analogue input Device select 1
15
D5N/OP[9]
LVDS output LVDS Data output 5 – Negative / CMOS output 11
16
D5P/OP[8]
LVDS output LVDS Data output 5 – Positive / CMOS output 10
17
D4N/OP[7]
LVDS output LVDS Data output 4 – Negative / CMOS output 9
18
D4P/OP[6]
LVDS output LVDS Data output 4 – Positive / CMOS output 8
19 DCLKN/OC[2] LVDS output LVDS Clock Output – Negative/ CMOS clock output 2
20 DCLKP/OC[1] LVDS output LVDS Clock Output – Positive/ CMOS clock output 1
21 DBGND
Supply
Analogue ground
22 DBVDD
Supply
Analogue supply
23
D3N/OP[5]
LVDS output LVDS Data output 3 – Negative / CMOS output 5
24
D3P/OP[4]
LVDS output LVDS Data output 3 – Positive / CMOS output 4
25
D2N/OP[3]
LVDS output LVDS Data output 2 – Negative / CMOS output 3
26
D2P/OP[2]
LVDS output LVDS Data output 2 – Positive / CMOS output 2
27
D1N/OP[1]
LVDS output LVDS Data output 1 – Negative / CMOS output 1
28
D1P/OP[0]
LVDS output LVDS Data output 1 – Positive / CMOS output 0
29
HZCTRL
Digital input Internal use only. Must be connected to AGND.
30
MON
Analogue output Clock monitor
31 LDO1VOUT
Supply
LDO output.
This pin must be connected to AGND via a decoupling capacitor.
32 LDO1GND
Supply
Analogue ground
33 LDO1VDD
Supply
Analogue supply
34
TGSYNC
Digital input Sensor Timing Sync pulse from host
35
CLK1
Digital output Sensor Timing Output 1
36
CLK2
Digital output Sensor Timing Output 2
37
CLK3
Digital output Sensor Timing Output 3
38
CLK4
Digital output Sensor Timing Output 4
39
CLK5
Digital output Sensor Timing Output 5
40
CLK6
Digital output Sensor Timing Output 6
41
CLK7
Digital output Sensor Timing Output 7
42
CLK8
Digital output Sensor Timing Output 8
43 AGND3
Supply
Analogue ground
44 IN1 Analogue input Analogue input 1
45 IN2 Analogue input Analogue input 2
46 IN3 Analogue input Analogue input 3
47 AGND2
Supply
Analogue ground.
w
Product Brief, Rev 3.0, February 2012
5
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for WM8235 electronic component. |
| Information | Total 15 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ WM8235.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| WM8232 | The function is 70MSPS 3-Channel AFE. Wolfson Microelectronics | |
| WM8233 | The function is 70MSPS 6-Channel AFE. Wolfson Microelectronics | |
| WM8234 | The function is 70MSPS 6-Channel AFE. Wolfson Microelectronics | |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
WM82
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||