CDB5571

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The CDB5571 evaluation board is intended to serve as a tool for evaluation of the TI CDB5571 Analog to Digital Converter (ADC). The evaluation board allows customers to take advantage of the full performance of the CDB5571 ADC. The evaluation board includes a sample-and-hold stage, an appropriate power supply and the necessary precision external components.

The CDB5571 is a 12 bit, 1.875 to 3.6 V successive approximation register (SAR) ADC with high precision and dynamic performance. It features pin-compatible family member options to choose different input ranges and resolutions. It also has a ±50 ppm/°C temperature coefficient and a power-down feature that allows for power savings. The CDB5571 has a very low power consumption of 1.1 mW at 3.6 V, and a maximum sampling rate of 200 kSPS.

The CDB5571 evaluation board is designed to help customers observe and evaluate the performance of the ADC with as few external components as possible. The evaluation board features input offset capability at the evaluation board level, allows customization of the input range, and provides several outputs for interfacing directly to ADC-ASICs with different voltage levels. It also provides isolation options to customer-provided digital input signals, and a voltage regulator for powering the device.

The CDB5571 evaluation board works by connecting the ADC directly to the evaluation board. The evaluation board has the necessary precision external components already mounted on-board, such as current mirrors, resistors, capacitors and isolation components. The evaluation board also includes a sample-and-hold stage to reduce the effects of noise and interference. The sample-and-hold stage improves the dynamic performance of the ADC by allowing users to store a sample at a given time, prior to conversion.

The evaluation board allows customers to measure and analyze the performance of the ADC. The performance metrics such as signal-to-noise-ratio, total harmonic distortion, resolution, and dynamic linearity can be tested. Output signals from the evaluation board can be directly fed into a spectrum analyzer or other suitable testing tools and their performance can be monitored. The evaluation board also features an enable pin and an LCD display which can be used to monitor the current conditions and settings of the board.

The CDB5571 evaluation board is an excellent tool for on-site evaluation of the ADC before full system integration. With the appropriate external components on-board, the board allows users to evaluate the performance of the ADC in a wide range of input conditions and various applications. It is a great tool for engineers to gain a better understanding of the ADC, and to optimize their system for the best performance.

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