Product category:
Design and Development Hardware
News Release from: Xignal Technologies | Subject: XT11EVAL
Edited by the Electronicstalk Editorial
Team on 28 February 2006
Evaluation kits check out delta-sigma
convertors
New evaluation kits support the XT11200 (12bit) and XT11400 (14bit), 40MHz analogue-to-digital convertors.
Xignal Technologies has announced released evaluation kits, dubbed XT11EVAL, that support the XT11200 (12bit) and XT11400 (14bit), 40MHz analogue-to-digital convertors (ADCs) Based on continuous-time delta-sigma technology, the ADCs offer half the power consumption of comparable pipeline alternatives, consuming only 70mW while operating at 20-40Msample/s sample rate
This article was originally published on Electronicstalk on 5 Oct 2005 at 8.00am (UK)
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ADC technology creates low power systems
Xignal Technologies has announced a breakthrough in analogue-to-digital convertor (ADC) technology.
ADC has greater functionality but uses less power
Following a technology announcement from Xignal during September 2005, the company is now launching the first analogue-to-digital conversion products based on its continuous time delta sigma ADCs.
They also provide high levels of integration to simplify design and handle 4V peak-to-peak signals even when operating from a 1.2V DC supply.
The XT11400 has a signal-to-noise ratio (SNR) of 76dB and the XT11200 an SNR of 71dB.
The XT11EVAL hardware platform is based around a FIFO board with 32Ksample worth of data cache memory that captures parallel output data from the ADC and sends it in serial form via USB to a host PC.
There is also a product-specific device under test (DUT) board, an XT11 product sample and the USB interface cable.
The evaluation kit includes Merlin software that turns a PC into a virtual spectrum analyser or oscilloscope.
With this tool, users can measure SNR, THD, SINAD and other key dynamic parameters, as well as inspect the time-domain performance of the ADC.
The kit is installed in moments, is powered by a single 1.2 V supply - which can be one AA battery - and communicates with a host PC over its USB 2.0 interface.
The DUT board can be used independently with an external pattern analyser.
Users of these evaluation systems will immediately notice the benefit of technology.
Input signals, either differential or single-ended, are easily coupled to the ADC through a transformer.
No additional external anti-alias filters or buffer ICs are needed.
Further, the board provides a choice of three different sample clock sources - an onboard reference clock, the on-chip crystal oscillator or an external user-supplied clock.
Users do not need additional precision timing components.
Finally, the evaluation board demonstrates clearly the -120dB full-scale noise floor attainable with Xignal's fast, third-order CT modulator technology.
Two evaluation options are currently available: the 12bit XT11200EVAL and the 14bit XT11400EVAL.
Both are priced at US $995 and are available on a 3 week lead time.
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