ADS1220 is a 24bit, deltasigma analogtodigital converter that integrates signal conditioning to reduce system cost and component count for small sensor signals. It provides flexible input options, robust noise rejection, and multiple integrated features suitable for precise sensing in industrial and laboratory environments. Key benefits Flexible input configurations: supports measurement of differential or fully differential signals using the programmable gain amplifier (PGA). Alternatively, it can be configured to pass through the input with input impedance and a PGA gain up to 4, enabling singleended measurements. resolution sensing with strong noise rejection: up to 2000 samples per second (SPS) conversion rate, with a digital filter that at 20 SPS provides simultaneous 50 Hz and 60 Hz rejection for industrial noise reduction. Powerful frontend with minimal external parts: PGA provides gains up to 128 V/V; integrated voltage reference, oscillator, temperature sensor, two programmable excitation current sources, and a lowside switch support two differential or four singleended inputs. Designed for small sensor signals: ideal for precise measurement of RTDs, thermocouples, thermistors, and resistive bridge sensors. Compact, integrative solution: combines MUX, lownoise PGA, excitation sources, reference, oscillator, switch, and temperature sensor in a single 24bit ADC device to lower system cost and component count. What it does The ADS1220 implements two differential inputs or four singleended inputs using a flexible input multiplexer (MUX) and a lownoise programmable gain amplifier (PGA). It includes two programmable excitation current sources, a voltage reference, an oscillator, a lowside switch, and a temperature sensor to support precise sensor measurements. Performance and compatibility Conversion rate: up to 2000 SPS. Digital filtering: at 20 SPS, provides concurrent rejection of 50 Hz and 60 Hz mains noise. Gain: programmable gain up to 128 V/V on the PGA. Input options: differential or fully differential measurements with PGA, or passthrough mode for singleended measurements with input impedance and a gain up to 4. Sensor compatibility: RTDs, thermocouples, thermistors, resistive bridge sensors. Applications Precision temperature sensing in industrial process control and laboratory equipment. RTD and thermocouplebased temperature monitoring in compact instrumentation. Bridge sensor readouts in automated test benches, automotive sensors, and smallscale instrumentation. Any lownoise, resolution measurement of small sensor signals where integrated frontend conditioning reduces system cost. Usage scenarios Industrial temperature monitoring: use differential inputs with the PGA for accuracy RTD or thermocouple readings, leveraging the 50/60 Hz notch filtering to suppress mains noise. Laboratory data acquisition: deploy the ADS1220 in a bench sensor system to accurately capture small signal changes from thermistors or bridge sensors with minimal external circuitry. Batterypowered instrumentation: exploit the integrated features and impedance input in a compact package to minimize external components while preserving measurement accuracy.