AD10678BWS

Overview

The AD10678BWS is a 16-bit, high-performance analog-to-digital converter (ADC) module designed for applications requiring increased signal-to-noise ratio levels. It achieves an 80 dBFS typical SNR through digital post-processing of four parallel ADC outputs. The device operates at a guaranteed sample rate of 80 MSPS with a differential input voltage range of 2.15 V p-p and a 50 Ω input impedance. Power requirements include +5.0 V for analog sections (AVCC), +3.3 V for encode circuits (EVCC), and +3.3 V for digital logic (VDD). The unit is assembled on a 2.2-inch by 2.8-inch laminate board with transformer-coupled analog inputs and PECL clock distribution.

Feature Summary

• 16-bit resolution with 80 MSPS maximum conversion rate
• Typical SNR of 80 dBFS achieved via correlation technique of four parallel ADCs
• Transformer-coupled single-ended to differential analog input stage
• PECL differential encode input with CMOS-compatible true binary digital outputs

Applications

• Low signature radar systems
• Medical imaging equipment
• Communications instrumentation
• Antenna array processing

Procurement Notes

Verify the obsolete status of the AD10678 series before procurement planning. Confirm that the BWS suffix corresponds to the specific evaluation board assembly configuration described in the datasheet. Ensure interface connectors match the recommended Samtec FSI-110-03-G-D-AD-K-TR specification for proper mechanical and electrical mating.

Selection Notes

Select this component when system architecture demands high dynamic range at 80 MSPS without external digital post-processing. Verify power supply stability within ±5% to maintain specified PSRR. Ensure thermal management meets the minimum 100 LFM airflow requirement across the heat sink to prevent junction temperature exceedance during continuous operation.

Part Context

The AD10678 utilizes a three-stage subrange architecture for its internal converters. Digital outputs from the four ADCs are summed in a complex programmable logic device (CPLD) using a ripple-carry adder to produce the final 16-bit word. The module includes integrated signal conditioning, reference buffers, and ADC drivers on the evaluation board substrate.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet lists similar devices such as the AD9444 and AD6645 but does not designate them as direct replacements.