Maxim integrates drivers/receivers in octal ultrasound transceiver

September 26, 2013 // By Graham Prophet
Maxim Integrated says its low-noise ultrasound transceiver saves 40% board space and replaces thousands of discrete components in a standard ultrasound system.

Ultrasound designers can now reduce form factor and improve image quality and reliability with the MAX2082 octal ultrasound transceiver. Maxim has used a multi-chip package with separate dice for the high-sensitivity receive channels, and the control circuitry; and for the high-voltage transducer drivers. MAX2082 integrates 8 channels of 3-level 200V pulsers and T/R switches, an octal ADC, octal LNA, and octal VGA, CW mixers, anti-aliasing filters, and coupling capacitors into a small package requiring less than 10 square inches. This is 40% of the space required for conventional solutions, Maxim says, easing design of portable systems. Traditional designs include over nine components in the T/R switch alone for each of up to 128 channels, so the MAX2082 displaces thousands of discrete parts. Power-supply noise and switching noise are all minimised in the MAX2082 for superior image quality, and saving the designer from complex signal layouts. Features include;

- Higher image quality and performance: improved system sensitivity and image quality through an ultra-low noise figure (2.8 dB at R IN = R S = 200Ω) and a high-dynamic-range receiver (76 dBFS SNR at f IN = 5 MHz and 2 MHz bandwidth)

- Higher integration and reliability: combines five separate blocks into one IC, replacing thousands of discrete components in a standard system

- Lower power: consumes 30% less power than conventional architecture

In a 10 mm x 26 mm BGA package, and for operation over 0°C to +70°C temperature range, pricing starts at $ 70.00 (1000).

Maxim notes that separate low-voltage and high-voltage dice are used in this configuration, but that the company will evaluate whether a single process with a high-voltage [process] module could allow the fabrication of a monolithic part at a later time.

Maxim Integrated;