CAMBRIDGE, UK — The AD9978A and ADDI7004 HD image signal processors announced by Analog Devices combine image signal conditioning circuitry, a 14-bit ADC, and precision timing core to enable high-speed digital imaging for the medical, industrial and scientific markets.
The 75Msample/s dual-channel AD9978A and the 72Msample/s quad-channel ADDI7004 are single-chip solutions that enable designers to create multi-channel CCD (charge-coupled device) or CMOS (complementary metal-oxide semiconductor) HD image acquisition systems.
Packaged in 6x6mm 40 LFCSP and 76-ball BGA respectively, the image signal processors support the high-resolution and high-speed sampling of signals from advanced image sensors, while consuming as low as 280mW and 530mW.
Both chips extend Analog Devices' family of AD997x image signal processors for high-speed digital imaging applications. Each channel integrates a complete AFE comprising a black-level clamp, a CDS (correlated double sampler), a 10-bit VGA (variable gain amplifier), and a 14-bit ADC.
The company's Precision Timing core provides adjustments for the CDS and sample-and-hold amplifier clocks with 210ps resolution at 75MHz (ADD9978A) and 217ps at 72MHz (ADDI7004).
The devices also contain a reduced range LVDS interface for the image-data outputs to increase performance and reduce EMI issues.
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The AD9978A and ADDI7004 reduce component count and power consumption without sacrificing performance, dynamically lowering power consumption at lower frequencies to extend battery life.
The chips offers pin-for-pin compatibility with the industry-standard AD9978 14-bit CCD signal processor, enabling designers to easily change existing designs to deliver high-end performance.Â
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Follow the links for more information about the AD9978A and the ADDI7004.
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