New precision wideband ADC from TI pushes data acquisition performance higher while cutting size & power consumption in half

06 December 2021

New precision wideband ADC from TI (ADS127L11) pushes data acquisition performance higher while cutting size & power consumption in half
New precision wideband ADC from TI (ADS127L11) pushes data acquisition performance higher while cutting size & power consumption in half

Engineers can achieve industry-leading AC & DC performance while maximising channel density & battery life.

Semiconductor firm, Texas Instruments (TI) has introduced the smallest 24-bit wideband analogue-to-digital converter (ADC) that delivers industry-leading signal measurement precision at wider bandwidths than competing ADCs. The ADS127L11, the newest product in TI’s portfolio of precision wideband ADCs, achieves ultra-precise data acquisition (DAQ) in a 50% smaller package, significantly optimising power consumption, resolution and measurement bandwidth for a wide range of industrial systems.

There is a clear trend toward smaller solution size and lower power consumption in applications such as test & measurement equipment and portable medical devices, where improved battery life is imperative,” said Noman Akhtar, Senior Research Analyst at technology, telecoms & media research & consultancy firm, Omdia. “There is an urgency to provide increased data throughput, higher bandwidth and lower power, all in a smaller footprint.

Capture high-resolution signals with 50% wider bandwidth & 25% lower latency

The highly flexible ADS127L11 offers wideband and low-latency filter options to optimise ADC performance and deliver tailored, high-performance data acquisition in a broad range of industrial systems. Designers can use wideband mode to improve AC measurement resolution with 50% wider bandwidth, data rates as high as 400 kSPS and a 30% higher signal-to-noise ratio than competing data converters, while minimising noise at high frequencies. In low-latency mode, the ADS12711 delivers 25% lower latency at up to 1,067 kSPS and 83.3% lower offset drift -- 50 nV/°C -- to help designers improve DC measurement resolution, data throughput and response times in data acquisition and condition-monitoring applications.

Reduce ADC footprint with a 50% smaller package

Until now, miniaturised, battery-powered industrial equipment designers had to choose between an ADC’s size and measurement precision at higher frequencies. The ADS127L11 eliminates this trade-off. In a 3-mm-by-3-mm quad flat no-lead (WQFN) package, this single-channel device is 50% smaller than the closest competing ADCs. In addition to reducing design size, the new ADC increases system functionality by enabling designers to pack additional channels into a compact design.

TI_ADS127L11_chip render
TI_ADS127L11_chip render

To learn more about how to optimise channel density by using multiple ADC channels operating in simultaneous-sampling mode, read the application brief, “ADS127L11 in Simultaneous-Sampling Systems” at: https://www.ti.com/lit/sbaa520

Extend battery run time with 50% lower power consumption

The ADS127L11 consumes half the power of other ADCs, enabling designs such as portable electroencephalogram (EEG) machines and power-quality analysers to better optimise power consumption against bandwidth requirements using the device’s power-scalable modes. Power consumption is as low as 3.3 mW with sampling rates as high as 50 kSPS, improving signal resolution and battery life.

Read more about the benefits of this lower power consumption in the technical article, “Balancing ADC size, power, resolution & bandwidth in precision data acquisition systems” at: https://e2e.ti.com/blogs_/b/analogwire/posts/balancing-adc-size-power-resolution-and-bandwidth-in-precision-data-acquisition-systems

Package, availability & pricing

The ADS127L11 is available for purchase on TI.com, and comes in a 20-pin, 3-mm-by-3-mm WQFN package or a 20-pin, 6.5-mm-by-4.4-mm thin shrink small-outline package (TSSOP). Pricing starts at US$5.75 in 1,000-unit quantities. Evaluation modules are available on TI.com for US$149.00.


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