AD7582TQ/883B

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The AD7582TQ/883B device is a 12-bit, high-speed, low-powered, voltage-output Analog to Digital Converter (ADC). It will accept a wide range of input signals, with sample rates up to 25MHz, providing supreme conversion accuracy and a fast speed of operation. The device\'s low power consumption, low input capacitance, and low power dissipation make it ideal for applications requiring efficient and highly accurate data acquisition.

The AD7582TQ/883B uses a successive approximation register (SAR) architecture combined with chopper-stabilized track-and-hold circuitry. Its linearity and fixed power consumption over temperature make it suitable for battery operated remote applications that necessitate a low power profile and high SNR performance.

Working Principle:

TheAD7582TQ/883B converter works by sampling the input signal and comparing its amplitude to an internal reference voltage. The SAR architecture compares the unknown voltage to successive approximation reference voltages of increasing stability until the input signal is within the resolution of the internal reference. Once the comparison has been made, the internal SAR control logic will set the appropriate output Codes.

Beginning with a midscale value, the internal SAR logic compares successively higher and lower binary bits. This process continues until the SAR logic has determined the bit codes that most closely resembles the input voltage. The bit codes are then stored in an internal 12-bit register. The system then uses these bits to construct the digital output word.

The AD7582TQ/883B device features a serial track-and-hold amplifier. This increases the time available for the successive approximation to take place. The amplified track-and-hold can be operated over full input signal ranges up to 25MHz sample rate and achieve maximum SNR of 95 dB.

The device has an improved power efficiency. It requires a typical supply current of only 19mA. The input capacitors have been reduced to levels below 3 pF, enhancing the settling time of the converter which helps improve the signal-to-noise ratio. The high power efficiency makes it suitable for battery operated equipment that require long-term reliable operation.

Applications:

The AD7582TQ/883B is suitable for a variety of applications, including low-power and remote data acquisition, such as ultralow-power medical instruments, remote sensors, and automotive safety systems. With its low power consumption, low input capacitance, and fast conversion rates, this device can be used in portable and remote applications, where efficient and highly accurate data acquisition is essential.

The AD7582TQ/883B can also be used in a variety of applications such as high-performance image processing, including medical imaging, machine vision and photography. Also, the device\'s low-voltage operation and high accuracy make it ideal for applications requiring analog-to-digital conversion accuracy with low noise and jitter performance.

In summary, the AD7582TQ/883B is an ideal data acquisition component for a range of high-performance analog-to-digital conversion applications. Its low power consumption, low input capacitance, and fast speed of operation make it an attractive option for efficient and highly accurate data acquisition.

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