Software and hardware replacement for ADS1274, pressure sensor can use four channel 144ksps 24 bit analog-to-digital converter GX1274

The core function of pressure sensors is to convert physical pressure signals into measurable electrical signals, and they are key components in industrial automation, medical monitoring, aerospace, and other fields. However, the electrical signals output by pressure sensors are often very weak and easily affected by environmental noise interference, which requires high-precision analog-to-digital converters to accurately convert and process sensor signals. The performance requirements of pressure converters for analog-to-digital converters are as follows:

Improve pressure measurement accuracy and reliability

Adapt to pressure measurement in complex environments

Simplify system design and reduce costs

Support multi parameter collaborative measurement

The GXSC analog-to-digital converter GX1274 has a 24 bit ultra-high resolution and can finely quantify the weak electrical signals output by pressure sensors. By using a high-order multi bit Delta sigma modulator on the noise, the in band noise is shaped and filtered out through an on-chip digital extraction filter, resulting in very low in band noise power. In addition, it integrates four synchronous sampling channels, which can simultaneously collect the output signals of multiple pressure sensors, fully meeting the measurement needs of pressure sensors.

GX1274 can choose from two types of on-chip digital filters: a high bandwidth FIR filter with an effective bandwidth of 90.6% of the Nyquist bandwidth and an in band ripple of less than ± 0.005dB; and a low latency SINC filter that can generate stable data output within 6 cycles and has better noise performance. In addition, GX1274 also has stable temperature characteristics, suitable for industrial applications in high temperature ranges.

The characteristics of GX1274 are as follows:

8-channel synchronous sampling, data rate up to 144kSps

High bandwidth FIR filters and low latency SINC filters are optional

Low power consumption: HS mode: 34.0mW/channel;

HR mode: 20.8mW/channel;

LP mode: 10.9mW/channel;

LS mode: 2.7mW/channel;

Rail to rail input common mode level

Common mode rejection ratio: 116dB

Analog power supply 5V; digital power supply 1.8V

IO power supply: 1.8V~3.3V

SPI or frame synchronization interface, supporting daisy chain mode

ESD level: HBM ± 2kV, CDM ± 2kV; Latch up ± 600mA

• Operating temperature range: -40 ° C to+85 ° C