AD9846AJSTZRL

Overview

The AD9846AJSTZRL is a complete analog signal processor for CCD applications, featuring a 30 MHz single-channel architecture. It integrates a 10-bit A/D converter, correlated double sampler (CDS), Pixel Gain Amplifier (PxGA), and variable gain amplifier (VGA). The device operates from a single 3 V supply with power consumption of 117 mW in normal mode. It processes interlaced and progressive scan area CCD arrays via a 3-wire serial interface.

Feature Summary

• Integrates a 30 MSPS Correlated Double Sampler (CDS) and a 10-bit A/D converter for high-speed signal processing.
• Includes a 6-bit Pixel Gain Amplifier (PxGA) for per-pixel color gain adjustment and a 10-bit Variable Gain Amplifier (VGA) with a range of 2 dB to 36 dB.
• Features low noise clamp circuits and an analog preblanking function to optimize black level accuracy and system headroom.
• Supports multiple input modes including CCD, AUX1, and AUX2, controlled via a 3-wire serial digital interface.

Applications

• Digital Still Cameras
• Digital Video Camcorders
• Industrial Imaging

Procurement Notes

Verify the specific suffix 'JSTZRL' against the manufacturer's ordering guide to confirm package type, temperature range, and reel specifications. Ensure compatibility with the 48-lead LQFP footprint and check for moisture sensitivity levels prior to soldering.

Selection Notes

Select this component for applications requiring a single-supply CCD signal chain up to 30 MHz. Consider the 10-bit resolution and integrated PxGA for color balancing needs. Verify that the 3 V supply voltage aligns with the system design constraints.

Part Context

The AD9846A belongs to Analog Devices' family of CCD signal processors. This specific part number denotes the industrial temperature grade (-20°C to +85°C) packaged in a thin plastic 48-lead LQFP. It serves as a direct replacement for standard AD9846 variants within the same thermal and packaging constraints.

Replacement Considerations

Direct substitutes include other AD9846A variants with different suffixes indicating distinct packages or temperature ranges. Verify pinout compatibility and electrical specifications before substitution.

FAQ

What is the maximum clock rate supported by the AD9846A?

The AD9846A supports a maximum clock rate of 30 MHz for its data sampling and conversion operations.

How many gain stages are integrated into the signal chain?

The device integrates two primary gain stages: a 6-bit Pixel Gain Amplifier (PxGA) and a 10-bit Variable Gain Amplifier (VGA).

What is the power consumption in normal operation mode?

In normal operation mode at 3.0 V, the typical power consumption is 117 mW.