One of the advantages of a sigma-delta converter
, such as is used in the PXIe-4081, is the noise reduction it provides by bandwidth shaping.
The AD7175-2 A/D sigma-delta converter
delivers 24 noise-free bits at 20 SPS and 17.2 noise-free bits at 250 kSPS providing designers a wider dynamic range, which enables smaller signal deviations to be measured as required within analytical laboratory instrumentation systems.
In addition, semiconductor sigma-delta converters
tend to be low cost because of their digital nature.
CMOS sigma-delta converters
; practical design guide.
Successive approximation register and sigma-delta converters
arc well suited for the resolution and measurement signal bandwidths required in these diagnostic systems.
For frequency-domain applications, sigma-delta converters
have distinct advantages, as described by National Instruments' Andy Deck, product marketing group manager for conditioned measurements, "Several of our DAQ modules with integrated signal conditioning utilize sigma-delta ADCs.
For sigma-delta converters
, the correct choice of over-sampling rate in conjunction with modulator order is very important.
This precision difference amplifier is designed to accept [+ or -]140 V inputs and drive the newest generation of single supply analog-to-digital or sigma-delta converters
. Additionally, a dedicated output amplifier allows the designer to attenuate, level shift, filter and scale the output signal.