STMicroelectronics STHV800 高速超声脉冲发生器
STMicroelectronics STHV800 是一款八进制式单片高压高速脉冲发生器发生器。它被设计用于医疗超声应用，但也能用于其他的压电、电容性或 MEMS 传感器。该器件集成了一个控制器逻辑接口电路（可兼容 1.8 V 和 3.3 V 输入信号）、电平转换器、MOSFET 栅极驱动器、噪音抑制二极管及大功率 P 通道和 N 通道 MOSFET 作为各通道输出级。这些 MOSFET 能提供超过 2 A 的峰值输出电流。此外 STHV800 还包含自偏置电路，在 RX 阶段可实现非常低的功耗(低至 200µWW 的全局功耗) ，且可通过外部专门引脚(THSD)实现热关断模块检测STHV800 的主要好处之一是，它需要的外部元件很少：仅需高压和低压电源上的去耦电容器，以及一个电阻器用于上拉 THSD 引脚。
The STMicroelectronics STHV800 High-Speed Ultrasound Pulser is offered in a 8.0mm x 8.0mm x 0.9mm package.
特性
- High-density ultrasound transmitter
- Two independent half-bridges per channel
- 0V to ±90V output voltage
- Power-up free
- Synchronization of the input signals (selectable) by an external clock
- Up to 20MHz operating frequency
- Low-power, high-voltage, high-speed drivers
- 2 independently-supplied half bridges (shorted-option) for each channel, one dedicated to continuous wave (CW) mode
- Main half bridge:
- ±2A source and sink current
- Down to 20ps jitter
- Low 2nd harmonic distortion
- CW half bridge:
- ±0.3A source and sink current
- Down to 10ps jitter
- Very low power consumption
- Fully integrated real clamping-to-ground function
- 8Ω synchronous active clamp
- ±2A source and sink current
- Fully integrated TR switch
- 8Ω ON resistance
- Up to 300MHz BW
- Current consumption down to 10µA in RX phase
- Receiver multiplexing function
- 1.8V to 3.6V CMOS logic interface
- Auxiliary integrated circuits
- Noise blocking diodes
- Anti-leakage on output node
- Fully self-biasing architecture
- Thermal protection
- Latch-up free due to HV SOI technology
- Very few external passive components or supplies needed
- 8.0mm x 8.0mm x 0.9mm package
应用
- Medical ultrasound imaging
- Pulse waveform generator
- NDT ultrsound transmission
- Piezoelectric transducer drivers
- Point-of-care ultrasound imaging equipment
Block Diagram
Complete Your Design
STMicroelectronics 标准产品
各种可直接替换器件，适用于通用模拟IC、分立元件和串行EEPROM。
发布日期: 2014-05-01
| 更新日期: 2022-03-11