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AD7790 - 16-Bit Buffered Sigma-Delta ADC

Description

The AD7790 is a low power, complete analog front end for low frequency measurement applications.

It contains a low noise 16-bit ∑-Δ ADC with one differential input that can be buffered or unbuffered along with a digital PGA, which allows gains of 1, 2, 4, and 8.

Features

  • Power Supply: 2.5 V to 5.25 V operation Normal: 75 μA maximum Power-down: 1 μA maximum RMS noise: 1.1 μV at 9.5 Hz update rate 16-bit p-p resolution Integral nonlinearity: 3.5 ppm typical Simultaneous 50 Hz and 60 Hz rejection Internal clock oscillator Programmable gain amplifier Rail-to-rail input buffer VDD monitor channel Temperature range:.
  • 40°C to +105°C 10-lead MSOP Low Power, 16-Bit Buffered Sigma-Delta ADC AD7790.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Data Sheet FEATURES Power Supply: 2.5 V to 5.25 V operation Normal: 75 μA maximum Power-down: 1 μA maximum RMS noise: 1.1 μV at 9.5 Hz update rate 16-bit p-p resolution Integral nonlinearity: 3.5 ppm typical Simultaneous 50 Hz and 60 Hz rejection Internal clock oscillator Programmable gain amplifier Rail-to-rail input buffer VDD monitor channel Temperature range: –40°C to +105°C 10-lead MSOP Low Power, 16-Bit Buffered Sigma-Delta ADC AD7790 FUNCTIONAL BLOCK DIAGRAM GND VDD REFIN VDD INTERNAL CLOCK AIN BUF 16-BIT ADC DIGITAL PGA SERIAL INTERFACE GND AD7790 03538-0-001 Figure 1. GENERAL DESCRIPTION The AD7790 is a low power, complete analog front end for low frequency measurement applications.
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