The ADS1220 is a precision 24bit analogtodigital converter that provides many integrated features to reduce system cost and component count for small sensor signals. It combines a flexible input multiplexer (MUX) with a lownoise programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, a lowside switch, and a precision temperature sensor to implement two differential or four singleended inputs. Key benefits Reduces system cost and component count by integrating multiple functions in one device. Enables accurate measurement of small sensor signals with resolution and low noise. Supports flexible input configurations (two differential or four singleended) to match various sensor types. Builtin excitation sources and temperature sensing simplify transducer interfaces and monitoring. Performance and features Data rate: up to 2000 samples per second (SPS), enabling fast, resolution measurements. Noise rejection: at 20 SPS, the digital filter provides simultaneous 50 Hz and 60 Hz notch rejection, beneficial for industrial environments with mains noise. Signal amplification: internal PGA provides gains up to 128 V/V to amplify small sensor signals before conversion. Integrated components: includes a lownoise PGA, voltage reference, oscillator, two programmable excitation current sources, a lowside switch, and a precision temperature sensor, all in a single device. Sensor compatibility: ideal for measuring small signals from resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. Signal interface and configuration Differential and singleended operation: supports two differential inputs or four singleended inputs via the programmable input multiplexer. FPGA compatibility: the device supports measurement of differential or fully differential signals when used with an FPGA. Passthrough and singleended mode: can be configured to pass through the internal reference while maintaining input impedance and a gain of up to 4 V/V, enabling singleended measurements. Applications and use scenarios Industrial temperature sensing: accurate RTD or thermistor measurements in control systems with 50/60 Hz noise environments. Precision sensor interfaces: thermocouples and smallsignal bridge sensors in laboratory equipment or test benches requiring resolution and low noise. Bridge sensor measurements: resistive bridge sensors in process monitoring or instrumentation where integrated excitation sources simplify wiring and calibration. In summary, the ADS1220 provides a compact, precision conversion solution with integrated signal conditioning, flexible input options, and useful noise rejection features, making it suitable for smallsignal sensing in industrial, laboratory, and instrumentation applications.