GX2277 Compatible OP200/OP2277 Applied to Analog Input Module

Analog input module is a device used to collect and process analog signals, which usually consists of analog input circuits, analog-to-digital converters, filters and interface circuits. The analog input circuit is responsible for converting external analog signals into voltage or current signals, then converting the analog signals into digital signals through an analog-to-digital converter, and finally filtering and enhancing the signals through a filter, and finally outputting them to a computer or other control devices for processing and analysis. The module is widely used in equipment in the field of industrial automation.

Analog input signals are often small in amplitude, such as weak voltage signals from sensors that may be at the millivolt or even microvolt level. The use of operational amplifiers allows these small signals to be amplified to a level range that can be handled by subsequent circuits. the GXSC high-performance op-amp GX2277‘s can be PIN TO PIN compatible with the OP200/OP2277 for use in this solution.

The operational amplifier features high input impedance and low output impedance, which enables it to act as a signal buffer in analog input modules, effectively isolating the front and rear circuits.The GX2277 features low noise, wide output voltage swing, ultra-low misregulation voltage, low misregulation voltage temperature drift, low input bias current, high common-mode rejection, and high power supply rejection. In addition, the GX2277 has excellent performance over the rated operating voltage range of ±2.25V to ±18V, and it has a very low initial distortion voltage so that external regulation is not required in most cases.

GX2277 Product Description:

- Rail-to-rail input and output; Offset voltage: 20μV

- Offset voltage temperature drift: ±0.2μV/°C

- Open loop gain: 138dB

- Common mode rejection: 135dB; power supply rejection: 136dB

- Input bias current: 20pA

- Static Current: 1.10mA/channel

- Swing Rate: 20V/µs; Bandwidth: 5MHz

- Capacitive load drive: 1nF

- Supply Voltage Range: Dual ±2.25V to ±18V; Single +4.5V to +36V