ADCs Capture Medical Signals

Nov. 8, 2011

A trio of high-resolution octal analog-to-digital converters (ADCs) offers low-power operation for medical and ultrasound applications. Models HMCAD1102, HMCAD1101, and HMCAD1100 offer sampling rates from 20 to 80 MSamples/s. Both 12- and 14-b LVDS output modes are available and can be selected through the SPI control interface. The converters are pin compatible with the ADS527x and ADS528x families from Texas Instruments, with power dissipation of only 40 mW per channel at 50 MSamples/s, including LVDS outputs. The signal-to-noise-ratio (SNR) performance at 50 MSamples/s is typically 72.2 dB for a 8-MHz input at 14-b resolution, with worst-case performance of 71 dB. All three ADCs can be evaluated with the Hittite EasySuite evaluation kits: EKIT01-HMCAD1102, EKIT01-HMCAD1101, and EKIT01-AD1100, respectively. The HMCAD1102, HMCAD1101, and HMCAD1100 ADCs are housed in a 9 x 9 mm plastic leadless surface mount package and provide excellent temperature stability over the -40 to +85C temperature range.

Hittite Microwave Corp.
2 Elizabeth Dr.
Chelmsford, MA 01824
(978) 250-3343
FAX: (978) 250-3373
e-mail: [email protected]

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.