24-bit, 4-channel, high dynamic range, 156 ksps per channel simultaneous sampling

November 28, 2011 // By Analog Devices
This application note describes a circuit that 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.
sampling system, DSP, FPGA, AD7765, 24-bit sigma-delta ADC, Analog Devices