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Part Number: AD9841A
Description: The AD9841A and AD9842A are complete analog signal proces-sors for CCD applications. Both products feature a 20MHz s...
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AD9841A
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DataSheet
General Description
AD9841A General Description
The AD9841A and AD9842A are complete analog signal proces-sors for CCD applications. Both products feature a 20MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays.
The AD9841A/AD9842A'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/D converter. The AD9841A offers 10-bit ADC resolution, while the AD9842A contains a true 12-bit ADC. 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 AD9841A and AD9842A operate from a single 3 V power supply, typically dissipate 78 mW, and are packaged in a 48-lead LQFP.
AD9841A Maximum Ratings
| Respect |
WithParameterTo |
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 |
AD9841A Features
20 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
10-Bit (9841) or 12-Bit (9842) 20 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 65 mW @ 2.7 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
10-Bit (9841) or 12-Bit (9842) 20 MSPS A/D Converter
Auxiliary Inputs with VGA and Input Clamp
3-Wire Serial Digital Interface
3 V Single Supply Operation
Low Power: 65 mW @ 2.7 V Supply
48-Lead LQFP Package
AD9841A Typical Application
Digital Still Cameras
Digital Video Camcorders
Digital Video Camcorders
AD9841A Connection Diagram
AD9841A
PDF/DataSheet Download
- Datasheet: AD9841A
- File Size: 278813 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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