Low noise, small size ADCs for your next product design

Low noise, small size ADCs for your next product design

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By eeNews Europe

Our world of electronics relies in many ways on the accuracy of Analog to Digital and Digital to Analog converters. With the new ADS 126x line of ADCs, Texas Instruments brings low noise, small size and easy integration into your new developments and applications. The ADS1260 and the ADS1261 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 supports three differential or five single-ended inputs. The ADS1261 supports five differential or 10 single-ended inputs. The integrated current sources simplify the measurement of RTDs. 

The flexible digital filter is programmable for single-cycle settled conversions, while supplying simultaneous 50-Hz and 60-Hz line cycle rejection. Signal and reference monitors, a temperature sensor, and CRC data verification make data reliability better. The ADS126x are pin compatible devices given in a 5-mm × 5-mm QFN package and are specified across the –40°C to +125°C temperature range.

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