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High voltage BST capacitance controller

The ST high voltage BST capacitance controller STHVDAC-304MF3 is a high voltage digital to analog converter (DAC), specifically designed to control and meet the wide tuning bias voltage requirement of the BST tunable capacitors.

It provides 4 independent high voltage outputs, thus having the capability to control 4 different capacitances in parallel. It is fully controlled through an RFFE serial interface.

BST capacitors are tunable capacitors intended for use in mobile phone applications, and dedicated to RF tunable applications. These tunable capacitors are controlled through a bias voltage ranging from 2 to 16 V. The implementation of BST tunable capacitors in mobile phones enables significant improvement in term of radiated performance, making the performance almost insensitive to the external environment.

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Errata Sheet
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Key Features

  • Dedicated ASIC to control BST tunable capacitances
  • Operation compliant with cellular systems requirements
  • Integrated boost converter with 4 programmable outputs (from 0 to 30 V)
  • Low power consumption
  • MIPI RFFE serial interface 1.8 V
  • Available in WLCSP for stand-alone or SiP module integration
  • Benefits
  • RF tunable passive implementation in mobile phones to optimize the radiated performance

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS8994: High voltage BST capacitance controller
3.0 344 KB

Application Notes

描述 版本 大小
AN4440: RFFE HVDAC control
1.0 1,547 KB

Technical Notes & Articles

描述 版本 大小
TN1173: Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches
3.1 333 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Order From STUnit Price (US$)*
@ 50
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STHVDAC-304MC3NRNDFlip-Chip 400uTape And Reel-.65No availability reported, please contact our Sales officeEcopack2PDF
STHVDAC-304MF3NRNDFlip-Chip 400uTape And Reel-.65No availability reported, please contact our Sales officeEcopack2PDF

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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