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Применения > > 16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System

16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System (CN0255)

In most systems, there are tradeoffs between performance and low power. The focus of this circuit design is to explore a few of these tradeoffs and still achieve low power (8 mW typical) and high performance in a 16-bit, 100 kSPS data acquisition system.

This circuit uses the AD7988-1, a low power (350 μA) PulSAR® analog-to- digital converter (ADC), driven directly from the ADA4841-1 high performance, low voltage, low power op amp. This amplifier was chosen for its excellent dynamic performance and its ability to operate with a single-supply voltage and to provide a rail-to-rail output. In addition, the input commonmode voltage range includes the negative rail.


The AD7988-1 ADC requires an external voltage reference between 2.4 V and 5.1 V. In this application, the voltage reference chosen was the ADR4525 precision 2.5 V reference.

Figure 1. Basic Single-Ended, Low Voltage, Low Power, 16-Bit, 100 kSPS ADC Solution

Возможности

  • 16-bit, 100KSPS Data Acquisiton
  • Single Supply
  • 8mW Total Power

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16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System  CN0255

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