A complete integrated signal preprocessing chip, placed between the sensor and the ADC, providing one-stop processing for weak analog signals.

Integrated functions (single-chip replacement for discrete op-amps, references, multiplexers, filters, and current sources):

1. Instrument amplification: Amplifies weak signals from sensors at the mV level (pressure, ECG, weighing, battery sampling);

2. Signal conditioning: Low-pass filtering, impedance matching, differential to single-ended conversion;

3. Integrated precision voltage reference, multiplexer, and programmable gain;

4. Direct interface with ADC, significantly simplifying peripheral circuitry and reducing noise; widely used in medical equipment, industrial sensing, and battery detection.