ADS8323Y/250

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Analog to Digital Converters (ADC) are electronic components used to convert analog signals, commonly of a wave-form, into digital signals for further processing by digital components such as a microprocessor. The ADS8323Y/250 is a high performance device from Texas Instruments, a world leader in analog to digital converter design.

The ADS8323Y/250 is a low power, fixed-input-range, 16-bit Analog to Digital Converter. It features micro-power supply sequencing and serial data output to provide a 150µs settling time and a maximum temperature drift of only 0.00000000005V/°C. It is a single-ended device and, unlike many competitors\' devices, doesn\'t require matched component characteristics to assure accuracy.

The working range of the device is unipolar, 0V to 3.3V, and is designed for single supply operation at a power supply of up to +5V. The conversion time of the ADS8323Y/250 is 12 cycles or 200µs. A shutdown mode allows the device to be deactivated with a maximum current of 2µA.

The device is particularly suited for use in portable and hand held instruments. Its low power requirements and high performance circuitry make it ideal for applications such as bar code scanners, thermostats, power meters and medical instruments. Its precision and accuracy make it suitable for applications such as weighing measurements, kilowatt-hour meters, gas analyzers and vibration analysis.

The ADS8323Y/250 works by performing voltage comparisons on the input analog signal. It consists of a preamplifier, which reduces the input voltage range which is then buffered and fed into the analog-to-digital converter. Here high speed sample and hold circuit captures the voltage and feeds into a successive-approximation register. When the right digital output is detected, the conversion is complete.

Texas Instruments have taken the flexibility of the ADC a step further by integrating an SPI/QSPI interface into the device. This allows efficient and enhanced design in which the data can be sent directly to external processors or microcontrollers in real time. Easy integration into multiple platforms is a major advantage of this device.

In summary the ADS8323Y/250 offers an attractive feature set in a small package size at a competitive price. Its low power requirements, precision and accuracy make it ideal for portable and mobile applications. With its SPI/QSPI capabilities its integration with both generic and proprietary external processors is straightforward.

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