Texas Instruments

DDC2256AZZF

DDC2256AZZF Description

The DDC2256AZZF from Texas Instruments is a high-precision, 24-bit sigma-delta (ΣΔ) analog-to-digital converter (ADC) designed for demanding measurement applications. Packaged in a 323-NFBGA form factor, it integrates 64 A/D converters with a 4:1 ratio of sample-and-hold (S/H) to ADC, enabling simultaneous sampling of 256 single-ended inputs. Operating at a 17k samples/second rate, it delivers exceptional resolution for low-frequency signal acquisition. The device supports ±2.5V analog and 1.8V digital/analog supplies, with an external reference, ensuring flexibility in system design. Its 0°C to 70°C operating range and MSL 3 (168 hours) moisture sensitivity make it suitable for industrial environments.

DDC2256AZZF Features

• High Channel Density: 256 inputs with 64 ADCs, reducing external multiplexing needs.
• 24-Bit Resolution: Ultra-high precision for sensitive measurements (e.g., sensor arrays, medical instrumentation).
• Simultaneous Sampling: Ideal for phase-critical applications like power monitoring or vibration analysis.
• Low-Power Design: Dual-supply operation (±2.5V analog, 1.8V digital) optimizes power efficiency.
• Industrial Robustness: ROHS3/REACH compliant and rated for surface-mount assembly in harsh conditions.
• External Reference: Enables customization for specific accuracy requirements.

DDC2256AZZF Applications

• Medical Imaging: High-resolution data acquisition from multi-channel sensors (e.g., CT scanners).
• Energy Monitoring: Synchronized sampling for grid-phase analysis in smart meters.
• Industrial Automation: Multi-input condition monitoring (vibration, temperature) in PLCs.
• Test & Measurement: Precision signal capture in benchtop instruments.
• Aerospace: Reliable performance in avionics systems requiring low-noise ADC arrays.

Conclusion of DDC2256AZZF

The DDC2256AZZF stands out for its unparalleled channel density, 24-bit resolution, and simultaneous sampling capability, making it a top choice for systems requiring high-fidelity, multi-channel data acquisition. Its industrial-grade reliability and flexible supply/reference options cater to complex designs, while its surface-mount packaging ensures compact integration. Engineers in medical, energy, and automation sectors will benefit from its precision and scalability, outperforming lower-density or lower-resolution ADCs in critical applications.