Electronic Design

Ultrasound Pulse Controller Raises Integration Bar

Setting new benchmarks for integration in ultrasound pulse control, the STHV748 controller provides four independent channels, each of which generates precisely controlled high-voltage pulses to drive piezoelectric crystals or other transducers. The device integrates CMOS digital control logic, analog level translators, MOSFET gate drivers, and high-power N- and P-channel MOSFET output stages in a fully self-biasing architecture. Other features include operation from ±90V supplies, a ±2A source and sink current in pulse mode and continuous wave (CW) mode, a dedicated CW mode pulser, a jitter figure down to 20 ps, operating frequency up to 20 MHz, fully integrated clamp to ground, noise block diodes, anti-memory circuitry to improve beam forming accuracy, thermal protection, and a standby mode. Available in a lead-free QFN64 measuring 9 mm x 9 mm x 1 mm package, price for the STHV748 is $11.95 each/10,000. STMICROELECTRONICS, Lexington, MA. (888) 787-3550.
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