AD9840JST

Overview

The AD9840JSTZ is a single-channel analog front-end (AFE) designed for charge-coupled device (CCD) signal processing. It integrates a low-noise preamplifier, correlated double sampler (CDS), and a 10-bit analog-to-digital converter (ADC). The device operates with a sampling rate of up to 20 MHz and supports a supply voltage range of 2.7 V to 3.6 V. It features a serial 3-wire interface for configuration and control. The component is housed in a 48-lead LQFP package and is rated for operation between -20°C and +85°C.

Feature Summary

• Integrates a low-noise preamplifier and correlated double sampler for CCD signal conditioning
• Includes an on-chip 10-bit ADC for direct digital conversion
• Supports serial 3-wire interface for register configuration

Applications

• CCD image sensor signal processing
• Medical imaging systems
• Scientific instrumentation

Procurement Notes

Verify the exact suffix against official Analog Devices documentation, as variations may indicate different temperature grades or packaging options. Confirm current availability status directly with authorized distributors, as this component may be subject to end-of-life restrictions or limited stock conditions.

Selection Notes

Select this component when a monolithic solution for CCD readout is required. Ensure the input signal characteristics match the integrated preamplifier specifications. Verify that the system timing aligns with the 20 MHz maximum sampling capability and that the power supply constraints fit within the 2.7 V to 3.6 V operating range.

Part Context

This part belongs to the AD9841A family of CCD signal processors. It shares functional similarities with other members of the series but may differ in specific pinouts, performance metrics, or package configurations. Consult the specific datasheet for the AD9840 to distinguish its unique electrical characteristics from related models.

Replacement Considerations

Check for direct substitutes within the AD9841A family. Verify pin compatibility and electrical parameter equivalence before substitution. Official replacement part numbers should be confirmed via Analog Devices cross-reference tools.