GX1220 is compatible with ADS1220 in smart flow transmitter applications

Intelligent flow transmitter set temperature, pressure, flow sensors and intelligent flow totalizer in one of a new generation of high-precision, high-reliability precision measuring instruments, equipment detected analog signals (such as pressure, temperature and other physical quantities associated with the flow rate) by the ADC is converted to digital signals, so as to process, calculate and transmit. It is characterized by wide flow range, good repeatability, high accuracy and small pressure loss.

In the intelligent flow transmitter design program, the recommended use of low-power, low-noise, highly integrated ADC GX1220, the GX1220 internal PGA, VREF, SPI and two IDAC 24-bit 3.7kSPS six-channel low-power Δ - Σ ADC. and can be 100% compatible with the replacement of TI‘s ADS1220, GX1220 in the price of a certain advantage. The GX1220 offers the same excellent performance at a competitive price.

The GX1220 is capable of performing conversions at data rates up to 3710 SPS. Digital filters provide 50Hz or 60Hz rejection for noisy industrial applications at ≤20 SPS, making the analog-to-digital converter ideally suited for applications that measure the signals of small sensors, such as Resistance Temperature Detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

The GX1220 features are described below:

- Wide power supply range: 2.7V to 5.25V

- Programmable gain: 1V/V to 128V/V

- Programmable Data Rate: Up to 3.7kSPS

- 50Hz or 60Hz rejection at <20SPS, single-cycle settling digital filters

- Three differential or five single-ended inputs

- Internal bias voltage generator Dual matched programmable current sources: 10uα-1.5mα

- Internal 2.048V reference voltage: 8ppm/°C (typical) drift

- Internal 2% precision oscillator

- SPI-compatible interface

- Packages: TSSOP and QFN