AD9849AKSTZRL

Overview

The AD9849AKSTZRL is a 12-bit CCD signal processor with an integrated timing driver, designed for digital still camera applications. It operates at pixel rates up to 30 MHz and features a complete analog front end including a Correlated Double Sampler (CDS), Pixel Gain Amplifier (PxGA), Variable Gain Amplifier (VGA), black level clamp, and a 12-bit A/D converter. The device includes a Precision Timing core for high-speed clock generation with 1 ns resolution. It supports on-chip 5 V horizontal and RG drivers and is controlled via a 3-wire serial interface. Packaged in a 48-lead LQFP, it functions within a temperature range of -20°C to +85°C.

Feature Summary

• Integrates a 12-bit, 30 MHz A/D converter with a complete analog front end for CCD signal processing.
• Features a Precision Timing core providing high-speed clock generation with approximately 1 ns resolution.
• Includes on-chip 5 V horizontal and reset gate drivers for direct CCD connection.
• Offers programmable gain stages including a PxGA and a 10-bit VGA for signal conditioning.

Applications

• Digital Still Cameras

Procurement Notes

Verify component authenticity through official Analog Devices channels or authorized distributors. Confirm the part number matches the specific suffix requirements for the 48-lead LQFP package. Check for RoHS compliance status as indicated in the ordering guide. Ensure handling procedures account for ESD sensitivity during installation.

Selection Notes

Select the AD9849 over the AD9848 when a 12-bit resolution and 30 MHz maximum clock rate are required. Ensure the design supports the higher drive voltage capabilities needed for 5 V horizontal and RG drivers. Verify that the system master clock can provide the necessary CLI input frequency for the desired pixel rate.

Part Context

The AD9849 is part of the AD9848/AD9849 family of highly integrated CCD signal processors. While the AD9848 offers 10-bit resolution at 20 MHz, the AD9849 provides enhanced performance with 12-bit resolution and 30 MHz operation. Both devices share similar packaging and control interfaces but differ in speed and output bit depth.

Replacement Considerations

The AD9848AKSTZRL is a related model within the same family but offers lower performance specifications (10-bit, 20 MHz). Direct substitution requires verification that the reduced resolution and clock speed meet the application requirements.

FAQ

What is the maximum operating clock rate for the AD9849?

The AD9849 is specified for a maximum clock rate of 30 MHz.

Does the AD9849 include internal timing drivers?

Yes, the AD9849 includes on-chip 5 V horizontal and reset gate (RG) drivers.

How is the device configured and controlled?

Operation is programmed using a 3-wire serial interface (SL, SDI, SCK).