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ADS1260-Q1

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Automotive 24-bit, 40-kSPS, 5-ch delta-sigma ADC with PGA, VREF and IDACs

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Data sheet

ADS1260-Q1

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 24 Sample rate (max) (ksps) 40 Number of input channels 5 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive 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) 20 Analog supply (min) (V) -2.5, 4.75 Analog supply voltage (max) (V) 2.5, 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 24 Sample rate (max) (ksps) 40 Number of input channels 5 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Automotive 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) 20 Analog supply (min) (V) -2.5, 4.75 Analog supply voltage (max) (V) 2.5, 5.25 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
VQFNP (RHM) 32 25 mm² 5 x 5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-bit, high-precision ADCs
    • Offset drift: 1 nV/°C
    • Gain drift: 0.5 ppm/°C
    • Noise: 30 nVRMS (20 SPS, gain = 128)
    • Linearity: 2 ppm
  • CMOS PGA gain: 1 to 128
  • Data rate: 2.5 SPS to 40 kSPS
  • 2.5-V reference: 4 ppm/°C
  • Single-cycle settling mode
  • Signal and reference monitors
  • 5-V or ±2.5-V power supply
  • Internal temperature sensor
  • Cyclic redundancy check (CRC)
  • Excitation current sources
  • Sensor burn-out current sources
  • Four general-purpose inputs/outputs
    (ADS1261-Q1)
  • AC excitation for bridge sensors (ADS1261-Q1)
  • 5-mm × 5-mm VQFN package
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • 24-bit, high-precision ADCs
    • Offset drift: 1 nV/°C
    • Gain drift: 0.5 ppm/°C
    • Noise: 30 nVRMS (20 SPS, gain = 128)
    • Linearity: 2 ppm
  • CMOS PGA gain: 1 to 128
  • Data rate: 2.5 SPS to 40 kSPS
  • 2.5-V reference: 4 ppm/°C
  • Single-cycle settling mode
  • Signal and reference monitors
  • 5-V or ±2.5-V power supply
  • Internal temperature sensor
  • Cyclic redundancy check (CRC)
  • Excitation current sources
  • Sensor burn-out current sources
  • Four general-purpose inputs/outputs
    (ADS1261-Q1)
  • AC excitation for bridge sensors (ADS1261-Q1)
  • 5-mm × 5-mm VQFN package

The ADS1260-Q1 and ADS1261-Q1 (ADS126x-Q1) are precision, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) that include a programmable gain amplifier (PGA). The devices also include a precision voltage reference and internal fault monitors. The sensor-ready ADCs give a high-accuracy, single-chip solution for the most demanding measurements, for example, weigh scales and resistance temperature detectors (RTDs).

The ADCs contain an input signal multiplexer, a low-noise PGA (with gains from 1 to 128), a 24-bit ΔΣ modulator, a precision voltage reference, and a programmable digital filter.

The high-impedance PGA inputs (1 GΩ) decrease measurement error due to sensor loading. The ADS1260-Q1 supports three differential or five single-ended inputs. The ADS1261-Q1 supports five differential or ten single-ended inputs. The integrated current sources simplify the measurement of RTDs.

The flexible digital filter is programmable for single-cycle settled conversions. Signal and reference monitors, a temperature sensor, and CRC data verification enhance data reliability.

The ADS126x-Q1 are pin compatible devices given in a 5-mm × 5-mm VQFN package and are specified across the –40°C to +125°C temperature range.

The ADS1260-Q1 and ADS1261-Q1 (ADS126x-Q1) are precision, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) that include a programmable gain amplifier (PGA). The devices also include a precision voltage reference and internal fault monitors. The sensor-ready ADCs give a high-accuracy, single-chip solution for the most demanding measurements, for example, weigh scales and resistance temperature detectors (RTDs).

The ADCs contain an input signal multiplexer, a low-noise PGA (with gains from 1 to 128), a 24-bit ΔΣ modulator, a precision voltage reference, and a programmable digital filter.

The high-impedance PGA inputs (1 GΩ) decrease measurement error due to sensor loading. The ADS1260-Q1 supports three differential or five single-ended inputs. The ADS1261-Q1 supports five differential or ten single-ended inputs. The integrated current sources simplify the measurement of RTDs.

The flexible digital filter is programmable for single-cycle settled conversions. Signal and reference monitors, a temperature sensor, and CRC data verification enhance data reliability.

The ADS126x-Q1 are pin compatible devices given in a 5-mm × 5-mm VQFN package and are specified across the –40°C to +125°C temperature range.
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Type Title Date
* Data sheet ADS126x-Q1 Automotive Precision, 5-Channel and 10-Channel, 40-kSPS, 24-Bit, Delta-Sigma ADCs With PGA and Monitors datasheet (Rev. A) PDF | HTML 16 May 2019
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs PDF | HTML 23 Mar 2022
Application note A Basic Guide to Bridge Measurements PDF | HTML 18 Feb 2022
Application note Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 23 Aug 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
White paper Automotive On-Board Weighing with ADS1261-Q1 09 Jan 2019

Design & development

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Evaluation board

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The ADS1261 evaluation module (EVM) is a platform for evaluating the ADS1261 analog-to-digital converter (ADC). ADS1261 is a low-drift, 24-bit, 40-kSPS, 10-channel delta-sigma (ΔΣ) ADC with an integrated PGA, voltage reference, and internal fault monitors. This sensor-ready ADC provides (...)

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