24-bit, 4-channel, high dynamic range, 156 ksps per channel simultaneous sampling
November 28, 2011 // Analog Devices // 0 commentsDownload White Paper 251Ko
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.
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