AD9949AKCPZ

Overview

The AD9949AKCPZ is a highly integrated CCD signal processor designed for digital still camera applications. It operates at pixel rates up to 36 MHz and integrates a complete analog front end with A/D conversion alongside a programmable timing driver. The device features a 12-bit, 36 MSPS ADC, a correlated double sampler (CDS), a pixel gain amplifier (PxGA) with 0 dB to 18 dB range, and a variable gain amplifier (VGA) offering 6 dB to 42 dB gain. It includes black level clamping, on-chip 3 V horizontal and RG drivers, and a Precision Timing core providing clock adjustment with less than 600 ps resolution. Configuration is managed via a 3-wire serial interface.

Feature Summary

• Integrates a 12-bit ADC with correlated double sampling and dual-stage amplification for high-fidelity signal processing.
• Features a Precision Timing core that generates high-speed CCD clocks with sub-nanosecond resolution.
• Includes on-chip output drivers capable of directly driving CCD reset gate and horizontal clock inputs.
• Supports flexible horizontal sequence control through programmable internal counters and blanking patterns.

Applications

• Digital still cameras
• High speed digital imaging applications

Procurement Notes

Verify the specific suffix 'KCPZ' against the manufacturer's current ordering guide to confirm package type and temperature grade. Ensure compatibility with the required 40-lead LFCSP footprint during PCB layout. Confirm RoHS compliance status if environmental regulations apply to the final assembly. Check for any recent product change notices regarding manufacturing sites or materials.

Selection Notes

Select this component when a single-chip solution for CCD readout is required. It is suitable for systems needing precise timing generation without external logic. Consider the 36 MHz maximum clock rate and 12-bit resolution limits. Verify that the 3-wire serial interface meets the host processor's available pins. Evaluate power dissipation requirements given the 320 mW typical consumption at full speed.

Part Context

The AD9949 belongs to Analog Devices' family of CCD signal processors. It serves as an analog front-end interface between charge-coupled devices and digital image processors. The device consolidates functions previously requiring multiple discrete components, simplifying system design and reducing board space in compact imaging modules.

Replacement Considerations

The AD9949A variant supports line lengths exceeding 4096 pixels due to different H-counter behavior. Other models in the series include the AD9948 and AD9979, which offer different bit resolutions or channel counts. Verify pin compatibility and register mapping before substituting.