A series of 24bit simultaneous sampling sigma-delta A/D converters from Analog Devices is targeted at use in wide bandwidth, high density instrumentation, energy and healthcare equipment.A series of 24bit simultaneous sampling sigma-delta A/D converters from Analog Devices is targeted at use in wide bandwidth, high density instrumentation, energy and healthcare equipment.
The AD7768 series includes a power scalable modulator and a digital filter on each channel to enable synchronised measurement of AC and DC signals in instrumentation applications, including modular data acquisition, audio test, and asset condition monitoring.
Offering high throughput, fast settling response and simultaneous sampling, the AD7768 series is said to enable faster test times, a reduction in testing costs and more efficient instrumentation design.
Meanwhile, high channel count enables healthcare devices, such as clinical vital signs monitoring equipment, to maintain low power and high input bandwidth.
According to the company, the converters deliver improved power quality monitoring through the ability to detect harmonic distortion over a wider bandwidth for detection and diagnosis of grid imbalance. A scalable layout also allows system designers to make further time and cost savings through the use of a single converter series across multiple platforms.
Two devices are available: the eight channel AD7768 and the four channel AD7768-4. Both are said to have a 6dB dynamic range advantage over competing products and to deliver what Analog Devices claims as the industry’s best integral non linearity performance over the widest available bandwidth. Other benefits include 10 times better offset, a 30 times reduction in gain error and a factor of two improvement in gain drift.
Author
Graham Pitcher
Source: www.newelectronics.co.uk