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> AD7763, 24-bit sigma-delta, a/d converter adc, qty 2
AD7763, 24-bit sigma-delta, a/d converter adc, qty 2
AD7763BSVZ, 625 kSPS, 24-Bit - Analog-to-Digital Converter (ADC), 64 Pin TQFP, Quantity 2, Analog Devices.
The AD7763 high performance, 24-bit, sigma delta analog to digital converter combines wide input bandwidth and high speed with the benefits of sigma delta conversion, as well as performance of 106dB SNR at 625 kSPS making it ideal for high speed data acquisition. A wide dynamic range combined with significantly reduced anti-aliasing requirements simplifies the design process. An integrated buffer to drive the reference, a differential amplifier for signal buffering and level shifting, an over-range flag, internal gain & offset registers and a low-pass digital FIR filter make the AD7763 a compact highly integrated data acquisition device requiring minimal peripheral component selection. In addition the device offers programmable decimation rates and the digital FIR filter can be adjusted if the default characteristics are not appropriate to the application. The AD7763 is ideal for applications demanding high SNR without necessitating design of complex front end signal processing.
The differential input is sampled at up to 40MS/s by an analog modulator. The modulator output is processed by a series of low-pass filters, the final one 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 the analog input range. With a 4V reference, the analog input range is 3.2V differential biased around a common mode of 2V. This common mode biasing can be achieved using the on-chip differential amplifiers, further reducing the external signal conditioning requirements.
* High performance 24-bit Sigma-Delta ADC
* 118 dB SNR at 78 kHz output data rate
* 106 dB SNR at 625 kHz output data rate
* 625 kHz maximum fully filtered output word rate
* Programmable over-sampling rate (32x to 256x)
* Fully differential modulator input
* On-chip differential amplifier for signal buffering
* Low pass FIR filter with default or user programmable coefficients
* Digital offset and gain correction registers
* Low power and power down modes
* Synchronization of multiple devices via SYNC pin
Quantity 2 ....... New Parts !!!!!
