产品概要
描述
The STHV800 is an octal, monolithic, high-voltage and high-speed pulse generator. It is designed for medical ultrasound applications, but can be used for other piezoelectric, capacitive or MEMS transducers.
The device integrates a controller logic interface circuit (compatible with both 1.8 V and 3.3 V input signals), level translators, MOSFET gate drivers, noise blocking diodes, and high power P-channel and N-channel MOSFETs as the output stage for each channel. These MOSFETs are capable of providing more than 2 A of peak output current. Each channel has a dedicated bridge in order to reduce power dissipation and jitter during continuous wave mode (peak current is limited to 0.3 A). This CW bridge has dedicated power supplies (HV_CW) which are fully independent on the main HV supplies.
These HV_CW supplies can be shorted to the HV supplies. The fundamental structure of each channel also consists of active clamping to ground circuitry, anti-leakage and anti-memory block, a thermal sensor to protect the device and an integrated TR-switch (just 8 Ω as equivalent resistor ) to connect the HV output to its LV output, guaranteeing strong decoupling during the transmission phase.
The eight independent T/R switches can be used in both a dedicated RX chain per channel or in a multiplexing configuration.
The clamp circuit has a current capability up to 2 A and works directly on the output pin, carrying this node exactly to zero. This feature allows minimized injection change during the transition from clamp to RX state.
In addition, the STHV800 includes self-biasing circuitry which allows very low power consumption during the RX phase (down to 200 µW global power dissipation) and thermal shutdown block sensing by an external dedicated pin (THSD).
One of the main benefits of this device is that it requires very few external components: only decoupling capacitors on the HV and LV supplies, and a resistor to pull up the THSD pin (moreover, this resistor can be shared by many devices).
Each channel is driven independently by only 2 digital bits, which in CW mode become one bit. An external clock can be used with the STHV800 to synchronize all the input signals. This feature, however, is optional: if the CK pin is tied to ground the device works in asynchronous mode.
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All features
- High-density ultrasound transmitter
- Two independent half-bridges per channel
- 0 to ±90 V output voltage
- Power-up free
- Synchronization of the input signals (selectable) by an external clock
- Up to 20 MHz 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:
±2 A source and sink current Down to 20 ps jitter Low 2nd harmonic distortion
- Main half bridge:
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- CW half bridge:
±0.3 A source and sink current Down to 10 ps jitter Very low power consumption
- CW half bridge:
- Fully integrated real clamping-to-ground function
- 8 Ω synchronous active clamp
- ±2 A source and sink current
- Fully integrated TR switch
- 8 Ω ON resistance
- Up to 300 MHz BW
- Current consumption down to 10 μA in RX phase
- Receiver multiplexing function
- 1.8 V to 3.6 V 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
特别推荐
All tools & software
所有资源
| Resource title | 版本 | Latest update | Actions | Details | 下載 |
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产品规格 (1)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 2.0 | 08 Apr 2014 | 08 Apr 2014 |
应用手册 (1)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 1.0 | 22 Oct 2014 | 22 Oct 2014 |
宣传册 (3)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 01 Aug 2015 | 01 Aug 2015 | |||||
| 1.0 | 04 Oct 2022 | 04 Oct 2022 | ||||
| 1.0 | 04 Oct 2022 | 04 Oct 2022 |
手册 (1)
| Resource title | 版本 | Latest update | Actions | Options | ||
|---|---|---|---|---|---|---|
| 01.24 | 29 Apr 2024 | 29 Apr 2024 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STHV800
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| STHV800L | Active 产品已量产 | TFLGA-56LD 8x8x0.9mm | Industrial | Ecopack2 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| STHV800L | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
STHV800L Active