AD652AQ Integrated Circuits (ICs)

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The AD652AQ is a versatile ultra-low noise charge amplifier and precision F/V converter designed for a wide range of applications. This unique device offers high quality precision performance, low noise, and wide operating temperature range. The application range includes transducer measurements, conversion of voltage to frequency, and frequency-to-voltage conversion. Additionally, the device offers high linearity and superior noise rejection, making it ideal for a variety of industrial, consumer, and medical applications.

The AD652AQ operates on a charge-amplification concept, allowing it to achieve the low noise levels necessary for precision measurements. It features an ultra-low offset voltage, high impedance charge amplifier input stage, a voltage-controlled oscillator (VCO) and a high frequency latch circuit. The voltage-controlled oscillator is used to produce the charge output signals, while the latch circuit detects the current charging rate of a capacitor and produces an output signal proportional to the rate of charge. The latch circuit is then used to precisely detect the voltage at the circuit’s input.

The VCO is programmable and has a wide frequency range from 10 kHz to 200 kHz, with the frequency being determined by the voltage present at the VCO input. As the frequency range of the VCO is increased, the VCO gain decreases. This allows for better linearity as the frequency increases. Additionally, the device also features a programmable gain selector which allows for easy gain accuracy.

The AD652AQ has a wide wide operating temperature range of -40°C to +85°C, which is suitable for industrial and medical applications in extreme conditions. This device is a precision F/V converter, using the charge amplifier input stage to detect voltage at the input. The latch circuit then accurately detects the voltage and produces an output signal proportional to the voltage. The device is designed to be used in applications which require precision measurements, providing superior noise rejection.

In conclusion, the AD652AQ is a very versatile PMIC and F/V converter. It is ideal for a wide range of applications, including transducer measurements and conversion of voltage to frequency and frequency-to-voltage. It offers low noise, superior linearity and superior noise rejection, and has a wide operating temperature range making it suitable for use in industrial and medical applications.

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