comment on this article

32bit SAR A/D has additional no latency output

A high precision 32bit successive approximation register (SAR) A/D converter from Linear Technology is said to simplify hybrid conversion system design by providing a 32bit low noise digitally filtered output as well as a 14bit 1Msample/s no latency output. According to the company, since these outputs are generated from a single 32bit SAR A/D core, their accuracy and speed are matched, even as the operating temperature, supply and stress vary.

The LTC2508-32 is said to be suited to applications that require precision measurement and fast signal tracking. With a guaranteed maximum linearity of 3.5ppm and up to 145dB of dynamic range, the LTC2508-32 can make precision measurements in the presence of noise.

The high speed output provides a 14bit differential and 8bit common mode representation of the input signal, suiting control loop designs with early detection mechanisms. The device is said to further improve system accuracy by directly digitising the input signal over the full input range with more than 120dB of common mode rejection.

An integrated digital filter can be configured to optimise the 32bit high accuracy output’s noise performance and bandwidth, to a maximum 145dB of dynamic range at an output data rate of 61sample/s. The integrated digital filter offers a minimum attenuation of out-of-band noiseof 80dB. Meanwhile, the reduced data rate of the digitally filtered output eases communication with slow processors.

Drawing 24mW from a single 2.5V supply, the LTC2508-32 is supplied in a 7 × 4mm 24-lead DFN package.

Graham Pitcher

Comment on this article

This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Graphene scaffold

While lithium metal-based batteries are attractive in theory, practical ...

Careless whispers

Chris Edwards explores how timing, EMI and even sound can provide attackers ...

HES conference

The High-End Sensors (HES) international conference will be held between April ...

MicroTech 2018

On April 9-10, 2018 the MicroTech exhibition will be held at the Royal Holloway ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

Tech trends

Last year was a busy one for technology and 2018 is unlikely to be any ...

The big build

It’s fair to say that politicians, with a few noticeable exceptions, have never ...

Beyond graphene

Since the discovery of graphene in 2004, the fascination around the so called ...

Shaping the future

Alexander Everke, the CEO of ams, started his career in the semiconductor ...