1 Features
• 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 nV/°C
– Gain drift: 0.5 ppm/°C
– Noise: 7 nVRMS (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 inputs/outputs

2 Applications
• Factory automation and control:
– Analog input modules
– Temperature controllers
– Weigh modules
• Instrumentation:
– Process analytics
– Lab and field instrumentation
– Weigh scales

3 Description
The ADS1262 and ADS1263 (ADS126x) are lownoise,
low-drift, 38.4-kSPS, 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 sensor-ready ADCs provide complete, highaccuracy,
one-chip measurement solutions for the
most-demanding sensor applications, including weigh
scales, strain-gauge sensors, thermocouples, and
resistance temperature devices (RTD).
The ADCs are comprised 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-dB
rejection of 50-Hz and 60-Hz line cycle interference.
The ADS1262 and ADS1263 are pin and functional
compatible. These devices are available in a 28-pin
TSSOP package and are fully specified over the
–40°C to +125°C temperature range.