ADS125H02

Product Folder Order Now Technical Documents Tools & Software Support & Community ADS125H02 SBAS790C – OCTOBER 2018 – REVISED JUNE 2019 ADS125H02 ±20-V Input, 2-Channel, 40-kSPS, 24-Bit, Delta-Sigma ADC With PGA and Voltage Reference 1 Features 1 ±20-V input, 24-bit delta-sigma ADC Programmable data rate: 2.5 SPS to 40 kSPS High-voltage, high-impedance PGA: – Differential input range: up to ±20 V – Programmable gain: 0.125 to 128 – Common-mode input voltage: up to ±15.5 V – Input impedance: 1 GΩ (minimum) High-performance ADC: – Input noise: 45 nVRMS (20 SPS) – CMRR: 105 dB – Normal-mode rejection at 50 Hz, 60 Hz: 95 dB – Offset drift: 5 nV/°C – Gain drift: 1 ppm/°C – INL: 2 ppm Integrated features and diagnostics: – 2.5-V reference: 3 ppm/°C drift – Clock oscillator: 2.5% error (maximum) – Excitation current sources – GPIO to drive external mux – Signal and reference voltage monitors – Cyclic redundancy check (CRC) Power supplies: – AVDD: 4.75 V to 5.25 V – DVDD: 2.7 V to 5.25 V – HVDD: ±5 V to ±18 V Operating temperature: –40°C to +125°C 5-mm × 5-mm VQFN package 2 Applications PLC analog input modules: – Voltage (such as ±10 V or 0 V to 5 V) – Current (such as 4 mA to 20 mA with shunt) – Temperature (such as RTDs, thermocouples) Test and measurement: – High common-mode voltage inputs – Battery testing – High-side current measurement 3 Description The ADS125H02 is a ±20-V input, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC). The ADC fea...