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參數資料
| 型號： | AD9942 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual-Channel, 14-Bit CCD Signal Processor with Precision Timing⑩ Core |
| 中文描述： | 雙通道，14位CCD信號處理器核心精確定時⑩ |
| 文件頁數： | 21/36頁 |
| 文件大小： | 452K |
| 代理商： | AD9942 |
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AD9942
H DRIVER AND RG OUTPUTS
In addition to the programmable timing positions, the AD9942
features on-chip output drivers for the RG_X and H1X to H4X
outputs. These drivers are powerful enough to drive the CCD
inputs directly. The H-driver and RG-driver currents can be
adjusted for optimum rise and fall time into a particular load by
using the DRVCONTROL register (Address 0x62). The
DRVCONTROL register is divided into five 3-bit values, each
adjustable in 4.1 mA increments. The minimum setting of 0 is
equal to off, or three-state, and the maximum setting of 7 is
equal to 30.1 mA.
Rev. A | Page 21 of 36
As shown in Figure 18, the H2X/H4X outputs are inverses of
H1X. The internal propagation delay resulting from the signal
inversion is less than l ns, which is significantly less than the
typical rise time driving the CCD load. This results in a
H1X/H2X crossover voltage at approximately 50% of the output
swing. The crossover voltage is not programmable.
DIGITAL DATA OUTPUTS
The AD9942 data output phase is programmable using the
DOUTPHASE register (Address 0x64). Any edge from 0 to 47
can be programmed, as shown in Figure 19. The pipeline delay
for the digital data output is shown in Figure 20.
0
FIXED CROSSOVER VOLTAGE
H1X/H3X
H2X/H4X
t
PD
H2X/H4X
H1X/H3X
t
RISE
t
PD
<<
t
RISE
Figure 18. H-Clock Inverse Phase Relationship
0
NOTES
1. DIGITAL OUTPUT DATA (DOUT) PHASE IS ADJUSTABLE WITH RESPECT TO THE PIXEL PERIOD.
2. WITHIN ONE CLOCK PERIOD, THE DATA TRANSITION CAN BE PROGRAMMED TO ANY OF THE 48 LOCATIONS.
Figure 19. Digital Output Phase Adjustment
P[0]
P[48] = P[0]
CLI_X
1 PIXEL PERIOD
P[12]
P[24]
P[36]
DOUT
t
OD
0
0
1
2
3
4
5
6
7
8
9
10
11
12
14
15
0
1
2
3
H-COUNTER
RESET
VD_X
NOTES
1. INTERNAL H COUNTER IS RESET SEVEN CLI_X CYCLES AFTER THE HD_X FALLING EDGE (WHEN USING VDHDEDGE = 0).
2. TYPICAL TIMING RELATIONSHIP: CLI_X RISING EDGE IS COINCIDENT WITH HD_X FALLING EDGE.
HD_X
CLI_X
X
X
X
X
X
X
X
H COUNTER
(PIXEL COUNTER)
X
X
X
Figure 20. Pipeline Delay for Channel A and Channel B Digital Data Output
相關PDF資料 |
PDF描述 |
|---|---|
| AD9942BBCZ | Dual-Channel, 14-Bit CCD Signal Processor with Precision Timing⑩ Core |
| AD9942BBCZRL | Dual-Channel, 14-Bit CCD Signal Processor with Precision Timing⑩ Core |
| AD9943 | Label Printer Tape RoHS Compliant: NA |
| AD9944 | Complete 10-Bit and 12-Bit, 25 MHz CCD Signal Processors |
| AD9943KCPZRL | Complete 10-Bit and 12-Bit, 25 MHz CCD Signal Processors |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9942BBCZ | 功能描述:IC PROCESSOR SGNL 14B 100CSPBGA RoHS:是 類別:集成電路 (IC) >> 專用 IC 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:調幀器 應用:數據傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應商設備封裝:400-PBGA（27x27） 包裝:散裝 |
| AD9942BBCZRL | 功能描述:IC PROCESSOR SGNL 14B 100CSPBGA RoHS:是 類別:集成電路 (IC) >> 專用 IC 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:調幀器 應用:數據傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應商設備封裝:400-PBGA（27x27） 包裝:散裝 |
| AD9943 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Complete 10-Bit and 12-Bit, 25 MHz CCD Signal Processors |
| AD9943KCP | 制造商:Analog Devices 功能描述:AFE Video 1ADC 10-Bit 3V 32-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:10 BIT 25 MHZ LOW COST ANALOG FRONT END - Bulk |
| AD9943KCPRL | 制造商:Analog Devices 功能描述:AFE Video 1ADC 10-Bit 3V 32-Pin LFCSP EP T/R |
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