Pulser chips suit portable ultrasound imaging apps

Supertex has introduced a pair of four-channel ultrasound pulser ICs that combine logic control circuitry, level translators, MOSFET gate drive buffers and high-current, high-voltage outputs in one small monolithic package.

The HV738 and HV748 feature built-in output drain bleed resistors for noise reduction, up to 20MHz operating frequency and matched delay times.

The four HV738 outputs are specified at up to ±65V and ±750mA source and sink current each in pulsed-wave (PW) mode.

The HV748's output voltage is specified at ±75V and output current is specified at ±1.25A source and sink each in PW mode. They also employ a direct coupling topology to facilitate easier board layout.

"The HV738 and the HV748 have controls to enable both pulsed-wave (PW) and continuous-wave (CW) mode operations," said Ahmed Masood, VP of marketing for Supertex, in a statement. "These highly integrated, four channel, monolithic pulsers are ideal for space-constrained portable ultrasound imaging systems that require channel density and image resolutions similar to those of larger, stationary systems."

Both parts are available in 48 lead QFN packages (HV738K6-G and HV748K6-G, respectively). The parts are Green and RoHS-compliant.

Pricing is $10.80 each for the HV738K6-G and $11.20 for the HV748K6-G, both in 1,000 quantities. Samples are available from stock. Lead-time for production quantities is four to six weeks ARO.

- Isminis Scouras
eeProductCenter