Ваш город: Москва
+7 (495) 221-78-04
+7 (812) 327-327-1
Терраэлектроника
Применения > > 24-Bit, 4-Channel, High Dynamic Range, 156 kSPS per Channel Simultaneous Sampling Data Acquisition System

24-Bit, 4-Channel, High Dynamic Range, 156 kSPS per Channel Simultaneous Sampling Data Acquisition System (CN0157)

The circuit shown in Figure 1 provides a high dynamic range four channel simultaneous sampling system with high crosstalk isolation, flexible sampling rates, minimal external components, and simple interface connections to a DSP or FPGA. The circuit uses four AD7765 24-bit sigma-delta ADCs in a daisy chain configuration to minimize the number of connections to the digital host. The AD7765’s fully integrated differential input/output amplifier, and reference buffer significantly reduce the external component requirement.

Using the AD7765 configured in a simultaneous sampling configuration provides

  • Channel-to-channel crosstalk isolation superior to that of solutions that integrate multiple 24-bit ADCs on a single chip.
  • 112 dB dynamic range at 156 kSPS.
  • Adaptable to greater or smaller channel counts.
  • Allows multiple SYNC control (can be phase shifted with respect to each other).
  • Dual decimation rates (128 and 256) and flexible sampling clock handles wide range of input bandwidths.


Figure 1. Four AD7765 ADCs in a Daisy-Chained Connection for Simultaneous Sampling (Simplified Schematic: All Connections and Decoupling Not Shown)

Возможности

  • 24 bit, 4 channel simultaneous sampling system
  • High dynamic range with high crosstalk isolation
  • Daisy chain configuration minimizes digital lines to host

Файлы

Схемы и диаграммы

Быстро получите общее представление о схемотехнике решения

Печатные платы и ПО

Ускорьте разработку по готовому дизайну


Заметили ошибку в работе сайта?
Скажите нам об этом