DDC2256AZZF

Analog To Digital Converters (ADC) Overview

The DDC2256AZZF is a 24-bit, 256-channel current-input analog-to-digital converter manufactured by Texas Instruments. It integrates sixteen independent sigma-delta ADCs to simultaneously digitize low-level currents from external sensors. The device supports adjustable integration times ranging from 58.8 microseconds to 100 milliseconds, enabling sampling rates up to 17 kSPS per channel while maintaining high resolution. It features single-ended inputs and utilizes an LVDS serial interface for data output. Power supplies include ±2.5V and 1.8V analog/digital rails. The component is housed in a 323-NFBGA package measuring 16x14 mm and operates within a temperature range of 0°C to 70°C.

Analog To Digital Converters (ADC) Feature Summary

• Single-chip architecture directly measures 256 low-level currents simultaneously without charge loss
• Integrates on-board bypass capacitors and reference buffers to reduce printed circuit board area and design complexity
• Includes an internal temperature sensor for environmental monitoring alongside signal acquisition

Analog To Digital Converters (ADC) Applications

• CT scanner data acquisition systems
• X-ray detection systems
• Photodiode sensor arrays
• Optical fiber power monitoring
• Multichannel current or voltage instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix ZZF against the manufacturer's official datasheet to confirm pinout compatibility and packaging specifications. Ensure that the external reference requirements align with the device's internal buffer capabilities. Confirm RoHS compliance status and moisture sensitivity level ratings prior to assembly planning to prevent soldering defects during reflow processes.

Analog To Digital Converters (ADC) Selection Notes

Select this component when designing systems requiring simultaneous digitization of hundreds of photodiode or sensor channels. The integrated integrator eliminates the need for external front-end amplifiers for current signals. Consider the LVDS interface for noise immunity in high-density layouts. Evaluate thermal dissipation limits given the power consumption per active channel to ensure stable operation within the specified industrial temperature range.

Analog To Digital Converters (ADC) Part Context

The DDC2256A belongs to Texas Instruments' specialized data acquisition family designed for high-channel-count applications. This variant specifically addresses the needs of medical imaging and scientific instrumentation where precise, parallel current measurement is critical. The device consolidates multiple functions typically requiring separate components into a single integrated circuit, simplifying system architecture.

Analog To Digital Converters (ADC) Replacement Considerations

No public confirmed substitute part numbers are available for direct replacement.