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參數資料
| 型號： | WM8190 |
| 廠商： | Wolfson Microelectronics |
| 英文描述： | TVS UNIDIRECT 6V 400W SMA |
| 中文描述： | （8 6）位輸出14位獨聯體/防治荒漠化公約AFE的/數字轉換器 |
| 文件頁數： | 1/25頁 |
| 文件大?。?/td> | 438K |
| 代理商： | WM8190 |
WM8190
(8 + 6) Bit Output 14-bit CIS/CCD AFE/Digitiser
Advanced Information, August 1999, Rev 3.0
WOLFSON MICROELECTRONICS LTD
Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK
Tel: +44 (0) 131 667 9386
Fax: +44 (0) 131 667 5176
Email: sales@wolfson.co.uk
http://www.wolfson.co.uk
Advanced Information
data sheets contain
preliminary data on new products in the
preproduction phase of development.
Supplementary data will be published at a
later date.
1999 Wolfson Microelectronics Ltd
.
DESCRIPTION
The WM8190 is a 14-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 14-bit
Analogue to Digital Converter. The digital output data is
available in 8, 7 or 4-bit wide multiplexed format, with no
missing codes.
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 WM8190 typically
only consumes 250mW when operating from a single
5V supply.
FEATURES
APPLICATIONS
14-bit ADC
No missing codes guaranteed
6MSPS conversion rate
Low power – 250mW typical
5V single supply or 5V/3.3V dual supply operation
Single or 3 channel operation
Correlated double sampling
Programmable gain (8-bit resolution)
Programmable offset adjust (8-bit resolution)
Programmable clamp voltage
8,7 or 4-bit wide multiplexed data output formats
Internally generated voltage references
28-pin SOIC package
Serial control interface
Flatbed and sheetfeed scanners
USB compatible scanners
Multi-function peripherals
High-performance CCD sensor interface
BLOCK DIAGRAM
M
U
X
RINP (1)
DATA
I/O
PORT
(9) SEN
(12) SCK
VSMP
(5)
MCLK
(7)
VRLC/VBIAS
(26)
(11) SDI
(6) RLC/ACYC
DVDD2
(10)
TIMING CONTROL
CL
RLC
V
S
R
S
BINP (27)
GINP (28)
VRX
(25)
VRT
(24)
VREF/BIAS
(4) OEB
M
U
X
M
U
X
VRB
(23)
RLC
RLC
CDS
CDS
CDS
R
G
B
M
U
X
R
G
B
+
PGA
I/P SIGNAL
POLARITY
ADJUST
8
8
OFFSET
DAC
PGA
8
8
OFFSET
DAC
PGA
8
OFFSET
DAC
RLC
DAC
8
4
+
+
+
CONFIGURABLE
SERIAL
CONTROL
INTERFACE
14-
BIT
ADC
(22)
AGND1
(8)
DGND
AVDD
(21)
DVDD1
(3)
(13) OP[0]
(14) OP[1]
(15) OP[2]
(16) OP[3]
(17) OP[4]
(18) OP[5]
(19) OP[6]
(20) OP[7]/SDO
+
+
I/P SIGNAL
POLARITY
ADJUST
I/P SIGNAL
POLARITY
ADJUST
(2)
AGND2
WM8190
相關PDF資料 |
PDF描述 |
|---|---|
| WM8191 | TVS BI-DIR 6.0V 400W SMA |
| WM8192 | TVS UNIDIRECT 400W 6.5V SMA |
| WM8196 | (8+8)BIT OUTPUT 16-BIT CIS/CCD AFE/DIGITISER |
| WM8199 | 20MSPS 16-bit CCD Digitiser |
| WM8199CDR | TVS BIDIRECT 400W 60V SMA |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8191 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:14-bit 6MSPS CIS/CCD Analogue Front End/Digitiser |
| WM8192 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:(8+8) Bit Output 16-bit CIS/CCD AFE/Digitiser |
| WM8195 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:14-bit 12MSPS CIS/CCD Analogue Front End/Digitiser |
| WM8195_05 | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:14-bit 12MSPS CIS/CCD Analogue Front End/Digitiser |
| WM8195SCFT/RV | 功能描述:模數轉換器 - ADC 14Bit 12MSPS 3C AFE RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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