Datasheet > AD9945KCPZRL72

AD9945KCPZRL72

更新时间： 2022-11-26 05:25:57

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	191K
描述
Complete 12-Bit 40 MHz CCD Signal Processor

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中文翻译

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数据手册

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AD9945KCPZRL72 数据手册

AD9945

Internal Power-On Reset Circuitry

and bypass pins and their respective ground pins. All decoupling

capacitors should be located as close as possible to the package

pins. A single clean power supply is recommended for the AD9945,

but a separate digital driver supply may be used for DRVDD

(Pin 11). DRVDD should always be decoupled to DRVSS (Pin 12),

which should be connected to the analog ground plane. Advan-

tages of using a separate digital driver supply include using a

lower voltage (2.7 V) to match levels with a 2.7 V ASIC, reducing

digital power dissipation, and reducing potential noise coupling.

If the digital outputs (Pins 1 to 10, 31, and 32) must drive a

load larger than 20 pF, buffering is recommended to reduce

digital code transition noise. Alternatively, placing series resis-

tors close to the digital output pins may also help reduce noise.

After power-on, the AD9945 will automatically reset all internal

registers and perform internal calibration procedures. This takes

approximately 1 ms to complete. During this time, normal clock

signals and serial write operations may occur. However, serial

is completed.

Grounding and Decoupling Recommendations

As shown in Figure 11, a single ground plane is recommended for

the AD9945. This ground plane should be as continuous as

possible. This will ensure that all analog decoupling capacitors

provide the lowest possible impedance path between the power

SERIAL

INTERFACE

24 REFB

23 REFT

22 CCDIN

1.0ꢃF

PIN 1

IDENTIFIER

0.1ꢃF

CCDIN

21 AVSS

20 AVDD

AD9945

ANALOG

SUPPLY

19 SHD

0.1ꢃF

TOP VIEW

(Not to Scale)

18 SHP

17 CLPOB

CLOCK

INPUTS

DATA

OUTPUTS

DRIVER

SUPPLY

ANALOG

SUPPLY

0.1ꢃF

NC = NO CONNECT

NOTE

THE EXPOSED PAD ON THE BOTTOM OF THE AD9945 SHOULD BE

SOLDERED TO THE GND PLANE OF THE PRINTED CIRCUIT BOARD

Figure 11. Recommended Circuit Configuration for CCD Mode

REV. A

–13–

1...10 11 121314 15 16

中文翻译

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AD9948	ADI	10-Bit CCD Signal Processor with Precision Ti	获取价格
AD9948KCP	ADI	10-Bit CCD Signal Processor with Precision Ti	获取价格
AD9948KCPRL	ADI	10-Bit CCD Signal Processor with Precision Ti	获取价格
AD9948KCPZ	ADI	10-Bit CCD Signal Processor with Precision Ti	获取价格
AD9948KCPZRL	ADI	10-Bit CCD Signal Processor with Precision Ti	获取价格
AD9949	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949AKCPRLZ	ADI	IC,DATA ACQ SIGNAL CONDITIONER,1-CHANNEL,12-BIT,LLCC,40PIN,PLASTIC	获取价格
AD9949AKCPZ	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949AKCPZRL	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949KCP	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949KCPRL	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949KCPRLZ	ADI	IC SPECIALTY CONSUMER CIRCUIT, QCC40, 6 X 6 MM, MO-220-VJJD-2, LFCSP-40, Consumer IC:Other	获取价格
AD9949KCPZ	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9949KCPZRL	ADI	12-Bit CCD Signal Processor with Precision Timing Core	获取价格
AD9950KJ	ETC	Parallel-Input Frequency Synthesizer	获取价格
AD9950TJ	ETC	Parallel-Input Frequency Synthesizer	获取价格
AD9951	ADI	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer	获取价格
AD9951ASV	ADI	IC DSP-NUM CONTROLLED OSCILLATOR, PQFP48, TQFP-48, DSP Peripheral	获取价格
AD9951PCB	ADI	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer	获取价格
AD9951YSV	ADI	400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer	获取价格

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