Analog Devices Sigma-Delta Converter Is Unmatched In Speed And Resolution For Precision Sensing
ADI’s AD7190 24-bit sigma-delta analog-to-digital converter delivers 7 nV noise and greater than 16-bits noise-free resolution up to 2.4 kHz; also features on-board programmable gain amp.
Analog Devices, Inc., is enabling industrial equipment manufacturers to expand the operating speed and precision of sensitive measurement instruments with the introduction today of a sigma-delta ADC (analog-to-digital converter) that features the industry’s best combination of data rate and noise-free resolution. While the resolution of competing devices degrades quickly at speeds beyond 1 kHz, ADI’s 24-bit AD7190 sigma-delta ADC achieves greater than true 16-bit noise-free resolution up to 2.4 kHz across all input voltages from 40 mV to 5 V.
This level of performance allows designers to measure much smaller signals faster and with greater accuracy, which can significantly improve system performance for precision instruments, such as weigh scales, process measurement and control modules, scientific instrumentation and medical monitoring devices. Additionally, designers can achieve an industry-leading 21-bit noise-free resolution for their high-precision dc systems given the devices’ noise performance of only 7 nV rms (root mean squared) for an input signal of 40 mV at a 4.7 Hz data rate. Delivering superior noise-free resolution across the widest data rate and input signal range of any sigma-delta ADC, the AD7190 offers manufacturers the flexibility to use the same data converter solution in multiple lines of end equipment.
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