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20bit SAR ADC boasts power, space savings

Posted: 24 Apr 2014     Print Version  Bookmark and Share

Keywords:Maxim Integrated  SAR ADC  reference buffer  process control 

Maxim Integrated has revealed what it describes as a versatile SAR ADC that integrates internal reference buffers. According to the company, the MAX11905 is a 20bit successive approximation register (SAR) ADC that enables 1.6Msps throughout with no latency and settling time limitation.

Typically, when engineers require high-precision data conversion, they turn to a delta-sigma ADC. However, to produce high precision and wide dynamic range, those ADCs must consume at least 100mW. In contrast, the MAX11905 SAR ADC consumes only 9mW, a 91 per cent power savings.

MAX11905

With this power savings comes very high precision and the fastest sampling rate available, stated Maxim. The MAX11905 integrates internal reference buffers, which reduces cost and time to market, and saves up to 50 per cent space compared to competitive discrete solutions, added the company. With this versatility, the MAX11905 is geared for a range of applications including process control, automatic test equipment, medical instrumentation and battery-powered devices.

The ADC achieves 98.3dB signal-to-noise ratio (SNR) and -123dB THD, and claims to improve static and dynamic performance, guarantee monotonic function and provide best-in-class power consumption.

The MAX11905 is available in a 20-pin, 4 x 4mm TQFN package specified over the -40°C to 85°C. Pricing starts at $33.95 (1000-up, FOB USA).





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