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.
| Top documentation | Type | Title | Format options | 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 | May 16, 2019 |
| Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 18, 2024 | |
| Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | Mar 13, 2024 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | Mar 29, 2023 | |
| Application note | Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) | PDF | HTML | Aug 23, 2021 | |
| E-book | Fundamentals of Precision ADC Noise Analysis (Rev. A) | Jun 19, 2020 | ||
| White paper | Automotive On-Board Weighing with ADS1261-Q1 | Jan 9, 2019 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFNP (RHM) | 32 | Ultra Librarian |
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