AD7858BNZ

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Data Acquisition - Analog to Digital Converters (ADC) allow for the conversion of an analog signal into a digital representation for digital processing. The AD7858BNZ is a 12-bit, high-speed, high-accuracy Analog-to-Digital (A/D) converter, designed to convert a full-scale of 0-12V analog input to a digital word. It utilizes a sigma-delta architecture and a built-in voltage reference to ensure accurate and stable A/D conversions.

This part also features a low-noise, differential-pair input stage and is capable of achieving single-cycle conversions at frequencies up to 20MSPS. The AD7858BNZ is an ideal choice for A/D conversion in high speed, low-noise applications such as digital ultrasound systems, medical instruments, and communication systems. Its small size and low power consumption make it ideal for portable devices with limited space.

The AD7858BNZ utilizes a sigma-delta architecture for high-accuracy A/D conversion. This architecture eliminates the need for any external circuit elements and integrates several components into the device for simplicity and low-cost. Sigma-delta converters work by first converting the analog input into a digital bit stream. Then, the bits are digitally filtered and the data is synchronized to the on-chip reference clock. This improves the resolution and the noise performance of the device.

The AD7858BNZ is powered using 3V and 5V analog power supplies. It can also be powered using an external reference voltage if required. The device offers a complete A/D conversion solution with its onboard voltage reference, sample & hold and reference buffering capability. Other features include a built-in error clarifier for correction of the accumulated errors due to reference noise, and programmable gain and offset. With its integrated features, this part is able to improve upon the performance of typical A/D converters.

The AD7858BNZ is a highly stable and accurate device, with 12-bit resolution and a signal-to-noise ratio of 75 dB. It offers up to 58 dB signal-to-noise ratio over temperature. With its low noise performance and high accuracy, this A/D converter is suitable for precision analog signals. Its single-cycle conversion ensures that analog signals of up to 20MSPS are accurately and quickly converted to a digital equivalent.

The AD7858BNZ is a proven solution for applications requiring high-speed, low-noise and accurate A/D conversions. Its small size, low power characteristics, superior signal-to-noise ratio, and high-speed performance make it ideal for a variety of high-resolution data acquisition applications. Its integrated features reduce cost, simplify design, and enable better product performance. It is an ideal choice for high-speed, low-noise clinical and medical instrumentation applications.

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