AD9940BSTZ

Overview

The AD9940BSTZ is a high-speed, single-supply correlated double sampler (CDS) with an integrated timing driver designed for CCD imaging systems. It features a 56 MHz CDS amplifier with 6 dB fixed gain and a Precision Timing core providing 0.37 ns resolution at 56 MSPS. The device operates on a single 2.7 V to 3.6 V supply, dissipating 105 mW at 2.7 V without H/RG drivers. It includes fully differential outputs for direct connection to image signal processors like the AD9941 and supports on-chip horizontal and reset gate timing generation.

Feature Summary

• 56 MSPS Correlated Double Sampler (CDS) with 6 dB fixed gain
• Integrated Precision Timing core with 0.37 ns resolution
• On-chip programmable horizontal (H1-H4) and RG timing drivers
• Fully differential analog outputs for improved signal integrity

Applications

• Professional HDTV camcorders
• Professional/high-end digital cameras
• Broadcast cameras
• Industrial high-speed cameras
• High-speed data-acquisition systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified suppliers. Confirm RoHS compliance status and check for moisture sensitivity level (MSL 3) handling requirements during storage and assembly. Ensure proper ESD precautions are observed due to device sensitivity.

Selection Notes

Select the AD9940BSTZ when interfacing with CCD sensors requiring precise timing control and low-noise signal conditioning. Ensure the system design accommodates the 48-lead LQFP package dimensions and provides adequate decoupling for the multiple power domains (AVDD, DVDD, HVDD, RGVDD). Verify that the host processor supports the required 3-wire serial interface configuration.

Part Context

The AD9940BSTZ belongs to the AD9940 family of analog front-end components manufactured by Analog Devices. It is specifically engineered for high-performance imaging applications where separating the CDS/VGA stage from the ADC allows for optimized PCB layout and noise reduction in professional video and industrial camera systems.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.