AFE2256TDR

Analog Front End (AFE) Overview

The AFE2256TDR is a 256-channel analog front-end (AFE) designed for digital X-ray flat-panel detector systems. It integrates 256 integrators, one programmable gain amplifier (PGA), one correlated double sampler (CDS) with dual storage, and four 16-bit successive approximation register (SAR) analog-to-digital converters (ADCs). The device outputs serial data in low-voltage differential signaling (LVDS) format. It operates within an input voltage range of 1.85 V and supports a commercial temperature range from 0°C to +70°C.

Analog Front End (AFE) Feature Summary

• Integrates 256 channels with on-chip 16-bit ADCs and pipeline integration for high throughput
• Includes internal timing generator and selectable full-scale input ranges from 0.6pC to 9.6pC
• Features low-noise performance with 750 electrons RMS noise and integral nonlinearity of ±2LSB
• Supports power-saving modes including sleep and shutdown

Analog Front End (AFE) Applications

• Digital X-ray flat-panel detectors
• Charge detectors
• Capacitance measurement systems

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'TDR' against official Texas Instruments documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the component matches the COF-320 package type required for flat-panel integration. Cross-reference the manufacturer part number with current datasheet revisions to validate electrical parameters and availability.

Analog Front End (AFE) Selection Notes

Select this component for applications requiring high channel density and integrated signal processing in X-ray imaging. Verify that the system design accommodates the 1.85V and 3.3V power supply requirements. Confirm that the LVDS output interface is compatible with the downstream data acquisition hardware. Evaluate the thermal management needs for the 0°C to +70°C operating range.

Analog Front End (AFE) Part Context

The AFE2256 belongs to the AFE2256 family of analog front-ends from Texas Instruments. It is specifically engineered for charge-coupled devices and flat-panel detectors in medical imaging. The TDR suffix typically indicates a specific packaging variant, such as tape and reel, distinct from catalog or tray options.