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Product Detailed Parameters
- Description：IC CCD SIGNAL PROC 10BIT 48-LQFP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Type：CCD Signal Processor, 10-Bit
- Input Type：Logic
- Output Type：Logic
- Current - Supply：-
- Operating Temperature：-20°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The AD9841AJST is a complete analog signal processor for CCD applications, featuring a single-channel architecture designed to sample and condition outputs of interlaced and progressive scan area CCD arrays. It operates from a single 3 V power supply with typical power consumption of 78 mW. The device includes an input clamp, correlated double sampler (CDS), Pixel Gain Amplifier (PxGA), variable gain amplifier (VGA), black level clamp, and a 10-bit A/D converter. It supports a maximum clock rate of 20 MHz and utilizes a 3-wire serial digital interface for register programming.
Feature Summary
- Integrates a 20 MSPS Correlated Double Sampler (CDS) and low noise clamp circuits for effective signal conditioning.
- Features a programmable Pixel Gain Amplifier (PxGA) with six-bit resolution for color steering and white balance adjustment.
- Includes a digitally controlled variable gain amplifier (VGA) offering a gain range from 2 dB to 36 dB.
- Provides auxiliary inputs with dedicated VGA and input clamp capabilities for processing analog video signals.
Applications
- Digital Still Cameras
- Digital Video Camcorders
Procurement Notes
Verify the specific ordering suffix 'JST' against the manufacturer's current documentation to confirm package type and temperature range specifications. Ensure compatibility with existing system designs regarding the 48-lead LQFP footprint and 3 V single-supply requirements before finalizing procurement decisions.
Selection Notes
Select this component for systems requiring integrated CCD signal processing with a 10-bit ADC resolution. Consider the AD9842A variant if 12-bit resolution is required instead. Verify that the design accommodates the 48-lead LQFP package dimensions and thermal characteristics specified in the datasheet.
Part Context
The AD9841AJST belongs to the AD9841A/AD9842A family of complete 20 MSPS CCD signal processors manufactured by Analog Devices. These devices are designed to handle the signal chain requirements for CCD sensors, combining analog front-end functions with digital control interfaces in a compact package.
Replacement Considerations
The AD9842AJST is a direct functional substitute within the same family, differing only in ADC resolution (12-bit vs. 10-bit). No other cross-model replacements are confirmed in the provided documentation.
FAQ
What is the maximum clock rate supported by the AD9841AJST?
The maximum clock rate supported by the AD9841AJST is 20 MHz.
How is the internal register configuration managed?
Internal registers are programmed through a 3-wire serial digital interface using SCK, SL, and SDATA pins.
What is the power consumption in normal operation mode?
The typical power consumption in normal operation mode is 78 mW when operating at a 3.0 V supply.
