AS1538-BTSU

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Data Acquisition – Analog to Digital Converters (ADC) has become an important area of technology as we approach the Digital Age with many signal processing applications that require digitizing of analog data for further analysis and storage. The device of choice for these applications is the AS1538-BTSU which is an integrated ADC, Digital Signal Processor (DSP), and Digital Signal Processing Software (DSPSW).

The AS1538-BTSU is a 16-bit self-calibrating ADC that is capable of converting analog voltages up to 16V into a 16-bit digital word. The device utilizes a ‘Cornerload’ architecture that provides a low distortion and linear input range while also allowing a wide variation in conversion gain and offset as well as tight noise and gain error specifications. It is well suited for use in high-resolution, high-speed signal acquisition applications such as audio, video, and motor controller applications.

In addition to the analog-to-digital conversion circuitry, the AS1538-BTSU also includes a Digital Signal Processor (DSP) capable of performing signal analysis, waveform analysis and statistical analysis; a Digital Signal Processing Software (DSPSW) to control the device and read data; and a serial port interface for USB, SPI and I2C communications. The versatile package supports sample rates up to 10 ksps and is available in both a surface mount and through-hole versions.

The primary application field of the AS1538-BTSU is for analog signal readout and preprocessing for further analysis. The device can be used to measure both AC and DC signals from a variety of sources such as microphones, motion sensors, strain gauges, and environmental sensors; as well as for signal conditioning tasks such as signal filtering and amplifying relayed signals from remote locations. The device supports both 8-bit and 10-bit resolution, with sample rates up to 10 ksps. This makes it suitable for a wide range of applications in both commercial and industrial settings.

The working principle of the AS1538-BTSU is based on the use of a low distortion, low noise, high speed analog-to-digital converter. This converter takes in a single voltage and passes it through an analog front-end circuit that consists of a variable gain amplifier, low pass filter and offset cancellation/adjustment circuit. It then passes it through the analog-to-digital converter, whose output is a 16-bit digital word that can then be fed into the Digital Signal Processor (DSP) for further processing. The device also supports both 6-bit and 10-bit resolution, with sample rates up to 10 ksps, depending on the application.

Overall, the AS1538-BTSU is a versatile, integrated solution that can significantly reduce power consumption, size and complexity for many digital signal processing applications. It is an ideal choice for use in high-resolution, high-speed signal acquisition applications such as medical, industrial control, energy monitoring, motor control and consumer electronics.

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