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The AD7264 is a dual, 14-bit, high speed, low power, successive approximation ADC that operates from a single 5 V power supply and features throughput rates of up to 1 MSPS per on-chip ADC. Two complete ADC functions allow simultaneous sampling and conversion of two channels. Each ADC is preceded by a true differential analog input with a PGA. There are 14 gain settings available: ?1, ?2, ?3, ?4, ?6, ?8, ?12, ?16, ?24, ?32, ?48, ?64, ?96, and ?128.The AD7264 contains four comparators. Comparator A and Comparator B are optimized for low power, whereas Comparator C and Comparator D have fast propagation delays. The AD7264 features a calibration function to remove any device offset error and programmable gain adjust registers to allow input path (for example, sensor) offset and gain compensation. The AD7264 has an on-chip 2.5 V reference that can be disabled if an external reference is preferred. The AD7264 is available in 48-lead LFCSP and LQFP packages.The AD7264 is ideally suited for monitoring small amplitude signals from a variety of sensors. The devices include all the functionality needed for monitoring the position feedback signals from a variety of analog encoders used in motor control systems.Product Highlights Integrated PGA with a variety of flexible gain settings to allow detection and conversion of low level analog signals. Each PGA is followed by a dual simultaneous sampling ADC, featuring throughput rates of 1 MSPS per ADC. The conversion result of both ADCs is simultaneously available on separate data lines or in succession on one data line if only one serial port is available. Four integrated comparators that can be used to count signals from pole sensors in motor control applications. Internal 2.5 V reference.

The AD7763 high performance, 24-bit, ?-? analog-to-digitalconverter (ADC) combines wide input bandwidth and high speed with the benefits of ?-? conversion, as well as performanceof 107 dB SNR at 625 kSPS, making it ideal for high speed dataacquisition. A wide dynamic range, combined with significantly reduced antialiasing requirements, simplifies the design process. An integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting, an overrange flag, internal gain and offset registers, and a low-pass, digital FIR filter make the AD7763 a compact, highly integrated data acquisition device requiring minimal peripheral componentselection. In addition, the device offers programmable decimation rates and a digital FIR filter, which can be user-programmed to ensure that its characteristics are tailored for the user?s application. The AD7763 is ideal for applications demanding high SNR without necessitating the design of complex, front-end signal processing.The differential input is sampled at up to 40 MSPS by an analogmodulator. The modulator output is processed by a series of low-pass filters, the final filter having default or user-programmable coefficients. The sample rate, filter corner frequencies, and output word rate are set by a combination of the external clock frequency and the configuration registers of the AD7763.The reference voltage supplied to the AD7763 determines theanalog input range. With a 4 V reference, the analog input range is ?3.2 V differential-biased around a common mode of 2 V. This common-mode biasing can be achieved using the on-chip differential amplifiers, further reducing the external signal conditioning requirements.The AD7763 is available in an exposed paddle, 64-lead TQFP_EPand is specified over the industrial temperature range from ?40?C to +85?C.APPLICATIONS Data acquisition systems Vibration analysis Instrumentation

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