STHV748 5-level, ±90 V, 2 A high speed pulser with four independent channels

This monolithic, high-voltage, high-speed pulser generator features four independent channels. It is designed for medical ultrasound imaging applications, but it can also be used for driving other piezoelectric, capacitive or MEMS based transducers. The STHV748 comprises a controller logic interface circuit, level translators, MOSFET gate drivers, noise blocking diodes, and high-power P-channel and N-channel MOSFETs as the output stage for each channel, clamping-to-ground circuitry, anti-leakage, anti-memory effect block, thermal sensor, and a T/R switch which guarantees an effective decoupling during the transmission phase. Moreover, the STHV748 includes self-biasing and thermal shutdown blocks. Each channel can support up to five active output levels with two half bridges. The output stage of each channel is able to provide ±2 A peak output current. In order to reduce power dissipation during continuous wave mode, a dedicated half bridge is available and the peak current is limited to 0.6 A

技术特性

0 to ±90 V output voltage
Up to 20 MHz operating frequency
Embedded low-power, floating high-voltage drivers (external voltage rails can be also used)
Mode operations:
- 3/5-levels output waveform
- ±2 A source and sink current
- Down ≤ 20 ps jitter
- Anti-cross conduction function
- Low 2nd harmonic distortion
Fully integrated clamping-to-ground function
- 8 Ω synchronous active clamp
- Anti-leakage on output node
Dedicated half bridge for continuous wave (CW) operations
- ≤ 0.1 W power consumption
- ±0.6 A source and sink current
- ≤ 10 ps jitter
Fully integrated T/R switch
- 13.5 Ω on resistance
- HV MOS topology to minimize current consumption
- Up to 300 MHz BW
- Receiver multiplexing function
2.4 V to 3.6 V CMOS logic interface
Auxiliary integrated circuits
- Noise blocking diodes
- Fully self-biasing architecture
- Anti-memory effect for all internal HV nodes
- Thermal protection
- Standby function
Latch-up free due to HV SOI technology
Very few external passive components needed

功能框图

STHV748 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STHV748QTR	Active		1000	VFQFPN2 64 9x9x1.0	Tape And Reel	-40 °C-125 °C	STHV748QTR

DATASHEET

描述	版本	大小
STHV748 : DS6123: Quad ± 90 V, ± 2 A, 3/5 levels, high speed ultrasound pulser	4	663KB

APPLICATION NOTES

描述	版本	大小
AN3240: Ultrasound HV pulser demonstration board	1	1227KB
AN3961: STEVAL-IME003V1 demonstration board based on the STHV748 high voltage pulser	2	2430KB

USER MANUALS

描述	版本	大小
UM1083: How to upgrade the waveforms on the STEVAL-IME003V1 demonstration board	1	1476KB

MARKETING BROCHURES

描述	版本	大小
BRHEALTH0511 : Semiconductor solutions for healthcare applications	1.0	666KB