STMicroelectronics advanced ultrasonic transmitter to add to the family, add a high output current 32 channel portable scanning transmitter. STHVUP32 uses the market-proven BCD8s-SOI manufacturing process from stmicroelectronics, supporting the integration of analog (bipolar), digital (CMOS) and power supply (DMOS) circuits on the same chip. The welding ball is packaged with FC-BGA168 and the size is 11.5mm x 10.5mm x 1.35mm.
The new product is STHVUP32, with output currents up to ±800mA, for portable systems where coaxial cable probes require higher drive capacity. As 64 channel STHVUP64 is the same ultrasonic transmitter product portfolio, the characteristics of the new 32 channel transmitter are similar to 64 channel models to improve performance and integrate the next generation of economical high performance medical and industrial scanners. These features include innovative technologies that maximize image quality, built-in digital beam control, space-saving driver architectures, and low-power modes.
Low power STHVUP32, which is essential for battery-powered systems; At the same time, it also has rich features, bring excellent user experience. On-chip memory is used to store data transfer patterns and can synchronize data with clock signals up to 200MHz, improving image quality by minimizing jitter effects. The communication port of the chip supports a variety of CMOS signal standards.
In addition to the usual three-level output, STHVUP32 also has five-level output capabilities, giving developers more flexibility to optimize image quality. The high output current allows the transmitter to drive the scanner's piezoelectric transmitter at high speeds, enabling a variety of imaging modes. On-chip protection includes noise blocking, overheat protection, undervoltage protection and recirculation current protection. The diagnostic register can directly read the cause of the interrupt for debugging in the event of a failure.
The new transmitter also enables developers to achieve a minimum pulse duration of 5ns, better image detail, and support for CW and PW modes, allowing users to perform various types of analysis, including cavity and liquid flow analysis. Compared with traditional analog control using time-delay circuit, digital beam control improves the accuracy of beam direction control. By integrating the beam control logic circuit, the transmitter works without a chip attached, such as an FPGA, saving PCB space and routing complexity, and bypassing the design challenges of FPgas.
In addition, the transmitter has a self-biased drive architecture that eliminates the need to connect decoupling capacitors to power pins, a new feature that helps the transmitter take up less circuit space and reduce material cost (BOM). In addition, STHVUP32's packages are smaller than those of comparable chips, allowing designers to create next-generation products that look smaller.