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.
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.
Follow the links for more information about the AD9978A and the ADDI7004.