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AD7631 18-Bit, 250 kSPS, Differential Programmable Input PulSAR® ADC

The AD7631 is an 18-bit, charge redistribution, successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.’s iCMOS high voltage process. The device is configured through hardware or via a dedicated write-only serial configuration port for input range and operating mode. The AD7631 contains a high speed 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the fully differential analog inputs on IN+ and IN−. The AD7631 features four different analog input ranges. Power is scaled linearly with throughput. Operation is specified from −40°C to +85°C.

Applications

• Process controls
• High speed data acquisition
• Digital signal processing
• Spectrum analysis ATE

Data Sheets

Application Notes

Order Information

Evaluation Boards

Reference Materials

• Technical Articles：MS-2210: Designing Power Supplies for High Speed ADC