AFE improves portable-ultrasound image quality

AFE improves portable-ultrasound image quality

Device also reduces component count, power consumption, and design complexity

Combining an LNA, a VGA, an anti-aliasing filter, and a 12-bit A/D converter, the 8-channel AD9271 analog front end claims to significantly increase channel density and improve image quality in portable medical imaging equipment while also allowing designers to reduce the signal path by 50%. The device operates from 10 to 50 Msamples/s and uses only 115 to 175 mW per channelor 25% less than competing solutions.

The part also integrates a crosspoint switch, which allows numerous multichannel configuration options that can be enabled with the continuous wave Doppler mode. Each channel features a variable gain range of 30 dB, and the ADC has an SNR of 70 dB.

Housed in 100-lead TQFP packages, the device also features programmable clock, data alignment, and digital-test-pattern generation. ($40 to $72 ea/1,000–samples available now.)

Analog Devices , Norwood , MA
Information 800-262-5643
http://www.analog.com