AD7664ACPZ

Application FieldSurveillance systems, video cameras, medical applications, and measurement equipment are some of the applications that require accurate, high-speed data acquisition. AD7664ACPZ is used in such applications where it provides an analog to digital conversion of signals. A typical application circuit comprises a signal processor, an ADC, such as the AD7664ACPZ, and a power supply.

Working PrincipleAD7664ACPZ is a two-step conversion process. In the first stage, the analog signal is converted to a digital logic level which simplifies analog signal processing and reduces sampling rate inaccuracies. The second stage of the process involves the conversion of the digital level to an analog value for further processing.First, the incoming analog signal is filtered and amplified to a suitable levels for successful digitalization. The operational amplifier, used for amplification, is designed for wideband frequency response and low distortion so that the digitization turns out to be accurate and minimal distortions occur in the output. The low-noise and distortion properties of AD7664ACPZ ensure the minimum quantization noise in digital data.The digitalized signal is then fed to a hybrid logic process which integrates analog and digital circuitry to determine the amplitude of the input signal. The hybrid logic includes a 14-bit register and an 8-bit register to hold the digitalized signal. The 8-bit register is constructed using CMOS- standard TTL logic, while the remaining 6-bits are generated with proprietary designs.Finally, the digitally-encoded signal is fed to the output which is a parallel bus. The DAC output is compatible with most common microcontrollers and it can be further processed in software for any required manipulation.AD7664ACPZ is a high-speed, low-power device suitable for reducing distortion, saving battery life, and enabling communication throughput. It offers 14-bit resolution in non-multiplexed and 12-bit resolution in multiplexed configurations with low noise and distortion. The ADC is ideal for high-accuracy applications in video, surveillance systems, medical applications, and measurement equipment.