This document describes the evaluation board for the AD7711, a 24-bit sigma-delta A/D converter offering 16-bit accuracy. The board includes an AD680 reference, a 10 MHz crystal, and bus buffers to facilitate connection to digital signal processors and microcontrollers. Full data on the AD7711 is provided in the separate AD7711 data sheet.
The note details various link options on the board to configure the serial interface mode, master clock source (on-board crystal or external), and reference sources (internal, AD680, or external). It also covers power supply requirements, grounding strategies, and analog input section configurations.
| Accuracy | 16-bit accuracy (0.0015% FSR) |
|---|---|
| Resolution | 24 bits |
| Clock Frequency | 10 MHz |
| Reference Voltage | +2.5 V |
| AVpp Range | +5 V to +10 V |
| DVop Voltage | +5 V |
The converter offers 16-bit accuracy with 0.0015% FSR.
The on-board 10 MHz crystal provides the master clock when the appropriate link is set.
Yes, an external reference voltage can be applied to SKT7 to serve as the reference source.