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參數資料
| 型號： | WM8198CDS |
| 廠商： | Wolfson Microelectronics |
| 元件分類： | 模擬前端 |
| 英文描述： | (8 + 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER |
| 中文描述： | （8）bit的輸出16位的獨聯體/防治荒漠化公約AFE的/數字轉換器 |
| 文件頁數： | 1/31頁 |
| 文件大小： | 379K |
| 代理商： | WM8198CDS |
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(8 + 8) Bit Output 16-bit CIS/CCD AFE/Digitiser
WM8198
DESCRIPTION
WOLFSON MICROELECTRONICS plc
w :: www.wolfsonmicro.com
Production Data, June 2004, Rev 4.0
Copyright
2002 Wolfson Microelectronics plc
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
RINP
DATA
I/O
PORT
SEN
SCK
VSMP
MCLK
VRLC/VBIAS
SDI
RLC/ACYC
DVDD2
TIMING CONTROL
CL
RLC
V
S
R
S
BINP
GINP
VRX
VRT
OEB
M
U
X
VRB
RLC
RLC
CDS
CDS
CDS
4
CONFIGURABLE
SERIAL
CONTROL
INTERFACE
ADC
AGND1
DGND
AVDD
DVDD1
OP[0]
OP[1]
OP[2]
OP[3]
OP[4]
OP[5]
OP[6]
OP[7]/SDO
AGND2
M
U
X
VREF/BIAS
M
U
X
R
G
B
M
U
X
R
G
B
+
PGA
I/P SIGNAL
POLARITY
ADJUST
9
8
PGA
9
8
PGA
9
8
+
+
+
+
+
I/P SIGNAL
POLARITY
ADJUST
I/P SIGNAL
POLARITY
ADJUST
OFFSET
DAC
OFFSET
DAC
OFFSET
DAC
RLC
DAC
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WM8198
相關PDF資料 |
PDF描述 |
|---|---|
| WM8198SCDS | (8 + 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER |
| WM8214 | 40MSPS 16 BIT CCD DIGITISER |
| WM8214CDR | 40MSPS 16 BIT CCD DIGITISER |
| WM8214CDS | 40MSPS 16 BIT CCD DIGITISER |
| WM8214SCDR | 40MSPS 16 BIT CCD DIGITISER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| WM8198CDS/R | 制造商:WOLFSON 制造商全稱:WOLFSON 功能描述:(8 + 8 ) BIT OUTPUT 16 BIT CIS/CCD AFE/DIGITISER |
| WM8198SCDS | 功能描述:模數轉換器 - ADC 16-Bit 6MSPS 3-Channel 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 |
| WM8198SCDS/R | 功能描述:模數轉換器 - ADC 16-Bit 6MSPS 3-Channel 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 |
| WM8198SCDS/RV | 功能描述:模數轉換器 - ADC 16-Bit 6MSPS 3-Channel 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 |
| WM8198SCDS/V | 功能描述:模數轉換器 - ADC 16-Bit 6MSPS 3-Channel 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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