AFE2256GRTDU

Analog Front End (AFE) Overview

The AFE2256GRTDU is a 256-channel analog front-end (AFE) designed for digital X-ray flat-panel detectors. It integrates 256 integrators, a programmable gain amplifier, correlated double samplers, and four 16-bit SAR ADCs with LVDS outputs. Key electrical parameters include an input voltage of 1.85 V, operating temperature range from 0°C to +70°C, and noise performance of 750 electrons RMS within a 1.2-pC input charge range. The device supports scan times from less than 20 µs to 204.8 µs and features pipelined integrate-and-read architecture for improved throughput.

Analog Front End (AFE) Feature Summary

• 256 integrated channels with on-chip 16-bit SAR ADCs
• Low noise performance: 750 electrons RMS at 1.2-pC input charge
• Pipelined integrate-and-read capability allowing data read during integration
• Nap and total power-down modes for energy efficiency

Analog Front End (AFE) Applications

• Flat-panel X-ray detectors
• Charge detectors
• Capacitance measurement systems

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix GRTDU against the official Package Option Addendum to confirm package type, pin count, and material specifications. Ensure compliance with RoHS requirements and moisture sensitivity levels as defined in the current production data sheet before procurement.

Analog Front End (AFE) Selection Notes

Select this component when designing high-channel-count digital X-ray imaging systems requiring simultaneous signal acquisition. Consider the COF-320 package dimensions and LVDS interface compatibility with downstream processing electronics. Evaluate power supply requirements for AVDD1 (1.85 V) and AVDD2 (3.3 V) to ensure system stability.

Analog Front End (AFE) Part Context

The AFE2256 series serves as a specialized analog front-end solution for medical imaging applications, specifically targeting flat-panel detector architectures. It replaces discrete integration and amplification stages by consolidating signal conditioning, multiplexing, and digitization into a single high-density custom chip-on-film package.

Analog Front End (AFE) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.