ADS1263 Datasheet | Texas Instruments

ures - 1 Precision, 32-bit, ΔΣ ADC - Auxiliary 24-Bit, ΔΣ ADC (ADS1263) - Data Rates: 2.5 SPS to 38400 SPS - Differential Input, CMOS PGA - 11 Multifunction Analog Inputs - High-Accuracy Architecture - Offset Drift: 1 n V/°C - Gain Drift: 0.5 ppm/°C - Noise: 7 n VRMS (2.5 SPS, Gain = 32) - Linearity: 3 ppm - 2.5-V Internal Voltage Reference - Temperature Drift: 2 ppm/°C - 50-Hz and 60-Hz Rejection - Single-Cycle Settled Conversions - Dual Sensor Excitation Current Sources - Internal Fault Monitors - Internal ADC Test Signal - 8 General-Purpose Input/Outputs 3 Description The ADS1262 and ADS1263 are low-noise, low-drift, 38.4-k SPS, delta-sigma (ΔΣ) ADCs with an integrated PGA, reference, and internal fault monitors. The ADS1263 integrates an auxiliary, 24-bit, ΔΣ ADC intended for background measurements. The sensorready ADCs provide plete, high-accuracy, onechip measurement solutions for the most-demanding sensor applications, including weigh scales, straingauge sensors, thermocouples, and resistance temperature devices (RTD). The ADCs are prised of a low-noise, CMOS PGA (gains 1 to 32), a ΔΣ modulator, followed by a programmable digital filter. The flexible analog frontend (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement. A single-cycle settling digital filter maximizes multipleinput conversion throughput, while providing 130-d B rejection of 50-Hz and 60-Hz line cycle interference. The ADS1262 and ADS1263 are pin and functional patible. These devices are available in a 28-pin TSSOP package and are fully specified over the - 40°C to +125°C temperature range. 2 Applications - High-Resolution PLCs - Temperature, Pressure Measurement - Weigh Scales and Strain-Gauge Digitizers - Panel Meters, Chart...