Replacement for ADS1248, GX1248 for Smart Analyzers

Intelligent analyzers often need to measure and analyze a variety of physical quantities. the ADC converts these analog signals to digital signals, which can then be analyzed, computed, and processed using digital signal processing techniques for subsequent analysis. For example, in a spectrum analyzer, after converting an analog electrical signal to a digital signal via A/D, the spectral characteristics of the signal can be analyzed.

Compared with analog signals, digital signals have higher anti-interference ability and stability. During transmission and processing, digital signals are not easily affected by noise, temperature changes and other factors. Through analog-to-digital conversion, smart analyzers can process signals in the digital domain, thus improving the accuracy and reliability of measurement and analysis. For example, in high-precision measuring instruments, the use of high-resolution ADCs enables precise measurement of small signal changes.

This article focuses on the GX1248 for smart analyzers, the choice of this ADC to meet the performance of the case, can reduce the number of devices to simplify the circuit design, the ADC‘s data rate of up to 2ksps, the power consumption of only 2.56mw. can be a complete replacement for the ADS1248, to help reduce the cost of the project design.

The GX1248 includes many integrated features with a low noise, programmable gain amplifier, a digital filter with single-cycle stabilization and an internal oscillator that provides a built-in low-drift voltage reference and two matched programmable excitation current sources (IDACs). The input multiplexer supports four differential inputs. In addition, the multiplexer integrates sensor loss detection, thermocouple voltage biasing, system monitoring, and general-purpose digital V/os. The PGAs offer selectable gains up to 128 V/V.