AD7684BRMZ

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AD7684BRMZ Application Field and Working Principle

The AD7684BRMZ is an Analog-to-Digital Converter (ADC) that has been designed as a low-power, single-channel, 10/12-bit, parallel output data acquisition system. The AD7684BRMZ is a versatile converter capable of sampling and sampling and converting a variety of types of analog signals such as current, voltage, temperature, or pressure into digital values. This converter offers high performance, superior accuracy and stability over a wide range of conditions.

The AD7684BRMZ is comprised of five main functional blocks: the analog sub-circuit, the control logic and register, the A/D conversion, the data serial interface and the power supplies. The analog sub-circuit is a low noise preamplifier that amplifies the input signal and provides additional filtering. The control logic and register provide digital control over the A/D conversion, data serialization and power supply. The A/D converter completes the analog inputs to digital conversion, utilizing either a 10-bit or 12-bit resolution. The data serial interface allows data downloaded from the A/D converter to be sent to a microprocessor. The power supplies provide the necessary voltage levels and power consumption to the A/D converter. The AD7684BRMZ can be used in a variety of applications such as temperature sensing, pressure sensing, current sensing, voltage sensing and data acquisition systems.

Working Principle

The AD7684BRMZ operates by using an internal bandgap reference that is regulated to a precision voltage. This reference voltage is used as the reference voltage for the A/D conversion. The analog input is amplified and filtered by the analog pre-amplifier then channeled through the A/D converter. The A/D converter comprises of a comparator and a successive approximation register (SAR). The comparator compares the analog input to the reference voltage and sets the comparator output when the analog input is larger than the reference. The SAR calculates a digital output based on the value of the comparator output and the number of bits used for the conversion. The digital output is then sent to the data serial interface and is available to be sent to a microprocessor. The AD7684BRMZ provides an accuracy of ±1 LSB (Least Significant Bit) when the 0 to +3V “Conversion Reference Voltage” is applied to the REF EN pin.

The AD7684BRMZ is an ideal solution for low-power and space-restricted applications. The low-power operation combined with high accuracy and reliability makes the AD7684BRMZ an excellent choice for a variety of applications. It is also suitable for a wide range of applications, from portable battery-operated systems to laboratory-type applications. The low-power operation and low supply current make the AD7684BRMZ perfect for applications that require low-power operation and data acquisition without sacrificing accuracy or reliability.

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