Low cost, octal ultrasound AFE with on-chip RF decimator and JESD204B serial interface helps simplify designs

February 25, 2013 // By Paul Buckley
Analog Devices, Inc. has introduced the AD9675 8-channel Ultrasound Analog Front End (AFE) with on-chip RF decimator and JESD204B serial interface, designed for mid- to high-end portable and cart-based medical and industrial ultrasound systems.

The device integrates eight channels of low-noise amplifier, variable-gain amplifier, anti-aliasing filter, and 14-bit A/D converter with the industry’s highest sample rate (125 MSPS) and best SNR (signal-to-noise ratio) performance (75 dB) for enhanced ultrasound image quality.

The on-chip RF decimator enables the ADC to be oversampled providing increased SNR for improved image quality while maintaining lower data I/O rates. The 5-Gbps JESD204B serial interface reduces ultrasound system I/O data routing compared to other data interface standards by as much as 80%. The features simplify ultrasound board design, while better addressing industry demand for higher data rates, larger channel counts and greater image resolution. A second model, the AD9674, offers the same basic functionality but is available with standard LVDS interface. The AD9675 and AD9674 are the latest additions to Analog Devices’ octal ultrasound receiver portfolio.

Availability and Pricing

The AD9675 and AD9674 are available now in a space-saving 144-ball, 10 mm x 10 mm BGA package and are pin compatible with the AD9670/AD9671, providing easy migration for those designs that require a reduced cost and limited digital functionality.

The AD9675 and AD9674 are priced at $68.00 and $62.00 each per 1000 devices respectively.

More information about the AD9675 and AD9674 AFEs at
www.analog.com/en/analog-to-digital-converters/ad-converters/ad9675/products/product.html and www.analog.com/en/analog-to-digital-converters/ad-converters/ad9674/products/product.html