AD9767ASTZRL

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Data Acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values which can be manipulated by a computer. Digital to Analog Converters (DACs) are used in data acquisition to convert a digital number into an analog voltage or current. AD9767ASTZRL is a High Speed, Multi-bit, Sigma-Delta DAC primarily used in High Speed, Multi-channel buffered Analog Output applications.

The AD9767ASTZRL is a high performance 8-bit Digital to Analog Converter (DAC) that operates on a single 1.8 to 5.5 V supply and is optimized to provide buffered, low noise, and high speed digital-to-analog conversion of a single multi-bit digital input into an analog voltage. It uses a Delta Sigma Modulator (DSM) to minimize the glitch and noise associated with simultaneous sampling.

The AD9767ASTZRL offers an 8-bit performance with an analog output range of 0 to 2.5V It offers excellent DC and AC performance with a fast settling time and low distortion. The AD9767ASTZRL features an on-chip amplifier which provides a clean low-noise, low-distortion analog output. The amplifier has programmable gain from 3 to 10 along with an adjustable output offset voltage.

The AD9767ASTZRL can be used in wide variety of applications. It is well suited for high frequency, multi-channel buffered analog output applications where small settling time, low distortion, and low noise is needed. Some of the applications include waveform generation, Ultrasound imaging, PC audio, and process control etc.

The AD9767ASTZRL consists of three blocks: A multi-bit Delta Sigma Modulator (DSM) which is the core of the circuit. The DS Modulator offers low noise and distortion with an 8-bit performance. The DSM is followed by an on-chip amplifier which has programmable gain, offset and power down mode. Finally, the output of the amplifier is buffered by an op-amp.

The operating principle of the AD9767ASTZRL ADC is to convert the digital input into a multi-bit binary coded signal, which is then encoded by the Delta Sigma Modulator (DSM). The DSM is responsible for converting the multibit binary coded signal into a single-bit pulse-density modulated (PDM) signal. This PDM signal is further processed by the post-processor in order to adjust the gain and offset, and converted into a buffered analog voltage at the output.

To summarize, AD9767ASTZRL is a high performance 8-bit Digital to Analog Converter (DAC) that is optimized to provide buffered, low noise, and high speed digital-to-analog conversion. The AD9767ASTZRL is suitable for a variety of applications, particularly those requiring low distortion, low noise, and fast settling time.

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