Octal Ultrasound Receiver Reduces I/O Data Routing
Feb. 28, 2013
Device integrates eight channels of low-noise amplifier, variable-gain amplifier, anti-aliasing filter, and 14-bit A/D converter with a 125 MSPS sample rate and 75 dB SNR performance.
The AD9675 from Analog Devices is an 8-channel Ultrasound analog front end 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 a 125 MSPS sample rate and 75 dB SNR performance for enhanced ultrasound image quality. The on-chip RF decimator enables the ADC to be oversampled providing increased SNR, while maintaining lower data I/O rates. The 5-Gbps serial interface purportedly reduces ultrasound system I/O data routing compared to other data interface standards by as much as 80%. A second model, the AD9674, offers the same basic functionality but is available with standard LVDS interface. Both models are available in a 144-ball, 10 x 10 mm BGA package and are pin compatible with the AD9670/AD9671. Samples are available now along with full production of the AD9674 for $62. Full production of the AD9675 will be available in April for $68.
