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ADS1262

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32-bit 38-kSPS 10-ch delta-sigma ADC with PGA and voltage reference for factory automation

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Data sheet

ADS1262

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 32 Sample rate (max) (ksps) 38 Number of input channels 10 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5, 5 Input voltage range (min) (V) -2.5, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 27 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 32 Sample rate (max) (ksps) 38 Number of input channels 10 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 2.5, 5 Input voltage range (min) (V) -2.5, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 27 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
TSSOP (PW) 28 62.08 mm² 9.7 x 6.4
  • 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
  • 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

The ADS1262 and ADS1263 (ADS126x) are low-noise, 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, high-accuracy, 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 front-end (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement.

A single-cycle settling digital filter maximizes multiple-input 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.

The ADS1262 and ADS1263 (ADS126x) are low-noise, 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, high-accuracy, 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 front-end (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement.

A single-cycle settling digital filter maximizes multiple-input 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.
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Technical documentation

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Type Title Date
* Data sheet ADS126x 32-Bit, Precision, 38-kSPS, Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier (PGA) and Voltage Reference datasheet (Rev. C) PDF | HTML 25 May 2021
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18 Mar 2024
EVM User's guide ADS1263EVM-PDK Evaluation Module (Rev. B) PDF | HTML 25 May 2023
Application note A Basic Guide to RTD Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note A Basic Guide to Thermocouple Measurements (Rev. A) PDF | HTML 29 Mar 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023
Application note A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 18 Feb 2022
Application note ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 09 Sep 2021
Application note Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 23 Aug 2021
Application note RTD Wire-Break Detection Using Precision Delta-Sigma ADCs PDF | HTML 18 Feb 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Circuit design K-type thermocouple measurement circuit with precision ADC 19 Mar 2019
More literature Blog: Understanding input range requirements for Precision ADCs with integrated PGAs 26 Apr 2017
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 Sep 2016
More literature Blog: And then there was noise: The mystery of the missing ENOB (Part 3) 21 Jul 2016
More literature Blog: And then there was noise: The mystery of the missing ENOB (Part 2) 21 Jul 2016
More literature Blog: And then there was noise: The mystery of the missing ENOB 21 Jul 2016
White paper Integrated diagnostics apply system reliability features at the ADC device level 26 May 2015
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
Analog Design Journal How delta-sigma ADCs work, Part 2 09 Nov 2011
Application note Delta-Sigma ADC Design for Bridge Sensor Applications 30 Sep 2011

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