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Part Number: AD9845A
Description: The AD9845A is a complete analog signal processor for CCD applications. It features a 30 MHz single-channel architec...
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AD9845A
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General Description
AD9845A General Description
The AD9845A is a complete analog signal processor for CCD applications. It features a 30 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9845A's signal chain consists of an input clamp, correlated double sampler (CDS),Pixel Gain Amplifier (PxGA), digitally controlled variable gain amplifier (VGA), black level clamp, and a 12-bit A/D converter. Additional input modes are provided for processing analog video signals.
The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input configuration, and power-down modes.
The AD9845A operates from a single 3 V power supply, typi-cally dissipates 140 mW, and is packaged in a 48-lead LQFP.
AD9845A Maximum Ratings
Parameter |
With RespectTo | Min | Max | Unit |
| AVDD1, AVDD2 DVDD1, DVDD2 DRVDD Digital Outputs SHP, SHD, DATACLK CLPOB, CLPDM, PBLK SCK, SL, SDATA VRT, VRB, CMLEVEL BYP1-4, CCDIN Junction Temperature Lead Temperature (10 sec) |
AVSS DVSS DRVSS DRVSS DVSS DVSS DVSS AVSS AVSS |
0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 |
+3.9 +3.9 +3.9 DRVDD + 0.3 DVDD + 0.3 DVDD + 0.3 DVDD + 0.3 AVDD + 0.3 AVDD + 0.3 150 300 |
V V V V V V V V V °C °C |
AD9845A Features
30 MSPS Correlated Double Sampler (CDS)
4 dB 6 dB 6-Bit Pixel Gain Amplifier (PxGA )(R)
2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)
Low Noise Clamp Circuits
Analog Preblanking Function
12-Bit 30 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 140 mW @ 3 V Supply
48-Lead LQFP Package
4 dB 6 dB 6-Bit Pixel Gain Amplifier (PxGA )(R)
2 dB to 36 dB 10-Bit Variable Gain Amplifier (VGA)
Low Noise Clamp Circuits
Analog Preblanking Function
12-Bit 30 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 140 mW @ 3 V Supply
48-Lead LQFP Package
AD9845A Typical Application
Digital Still Cameras
Digital Video Camcorders
Industrial Imaging
Digital Video Camcorders
Industrial Imaging
AD9845A Connection Diagram
AD9845A
PDF/DataSheet Download
- Datasheet: AD9845A
- File Size: 258485 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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The AD9844A is a complete analog signal processor for CCD applications. It features a 20 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9844A's signal chain consists of a...
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