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參數資料
| 型號： | AD9821 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Complete 12-Bit 40 MSPS Imaging Signal Processor |
| 中文描述： | 完整的12位40 MSPS的影像信號處理器 |
| 文件頁數： | 13/16頁 |
| 文件大小： | 277K |
| 代理商： | AD9821 |
REV. 0
AD9821
–13–
CMOS
OR
CCD
IMAGER
VIN+
BUFFER
OR
LEVEL SHIFT
OUT+
AD9821
ADC
OUT
REGISTER-
DATA
SERIAL
INTERFACE
DIGITAL
OUTPUTS
DIGITAL IMAGE
PROCESSING
ASIC
(MAY ALSO
INCLUDE TG)
TIMING
GENERATOR
V-DRIVE
(CCD)
IMAGER
TIMING
DATACLK/CLAMP
TIMING
VIN–
OUT–
Figure 12. System Applications Diagram
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
37
48 47 46 45 44
39 38
43 42 41 40
PIN 1
TOP VIEW
(Not to Scale)
TEST
AVSS
TEST
AVDD2
BYP1
VIN-
VIN+
TEST
TEST
AVDD1
AVSS
AVSS
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
(MSB) D11
AD9821
S
S
S
N
S
D
D
V
V
N
D
D
D
D
D
N
P
C
T
T
T
N
3V
ANALOG SUPPLY
IMAGER INPUT, POSITIVE
3V
ANALOG SUPPLY
12
DATA
OUTPUTS
3
SERIAL
INTERFACE
0.1 F
3V
ANALOG SUPPLY
3
CLOCK
INPUTS
3V
ANALOG SUPPLY
3V
DRIVER
SUPPLY
NC = INTERNALLY NOT CONNECTED
N
N
IMAGER INPUT, NEGATIVE/REFERENCE
1.0 F
1.0 F
0.1 F
0.1 F
0.1 F
0.1 F
0.1 F
Figure 13. Recommended Circuit Configuration
APPLICATIONS INFORMATION
The AD9821 is a complete Analog Front End (AFE) product
for a variety of imager applications using CMOS image sensors
and CCDs with on-chip CDS. As shown in Figure 10, the imager
output is generally buffered and sent to the AD9821’s analog
inputs, either as a differential or single-ended signal. The AD9821
performs the sample-and-hold operation, gain adjustment,
black level correction, and analog-to-digital conversion. The
AD9821’s digital output data is then processed by the image
processing ASIC. The internal registers of the AD9821—used
to control gain, offset level, and other functions—are
programmed by the ASIC or microprocessor through a 3-wire
serial digital interface. A system timing generator provides the
clock signals for both the imager and the AFE.
相關PDF資料 |
PDF描述 |
|---|---|
| AD9821KST | Complete 12-Bit 40 MSPS Imaging Signal Processor |
| AD9822 | Complete 14-Bit CCD/CIS Signal Processor |
| AD9822JR | Complete 14-Bit CCD/CIS Signal Processor |
| AD9822JRS | Complete 14-Bit CCD/CIS Signal Processor |
| AD9823 | Correlated Double Sampler (CDS) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9821KST | 制造商:Analog Devices 功能描述:AFE Video 1ADC 12-Bit 3.3V 48-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:12 BIT 40 MSPS IMAGING SIGNAL PROCESSOR - Bulk |
| AD9821KSTRL | 制造商:Analog Devices 功能描述:AFE Video 1ADC 12-Bit 3.3V 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:12 BIT 40 MSPS IMAGING SIGNAL PROCESSOR - Tape and Reel |
| AD9821KSTZ | 制造商:Analog Devices 功能描述:AFE Video 1ADC 12-Bit 3.3V 48-Pin LQFP |
| AD9821KSTZRL | 制造商:Analog Devices 功能描述:AFE Video 1ADC 12-Bit 3.3V 48-Pin LQFP T/R |
| AD9821KSTZRL7 | 制造商:Analog Devices 功能描述:AFE Video 1ADC 12-Bit 3.3V 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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