STHVDAC-253M:BST Controller

The ST BST capacitance controller STHVDAC-253M 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 capacitances.

It provides 3 independent high voltage outputs, thus having the capability to control 3 different capacitances. It is fully controlled through a RFFE serial interface.

BST capacitances are tunable capacitances intended for use in mobile phone application, and dedicated to RF tunable applications. These tunable capacitances are controlled through a bias voltage ranging from 0 to 25 V. The implementation of BST tunable capacitance in mobile phones enables significant improvement in terms of radiated performances, making the performance almost insensitive to the external environment.

Key Features

  • Dedicated ASIC to control BST tunable capacitances
  • Operation compliant with cellular systems requirements
  • Integrated boost converter with 3 programmable outputs (from 0 to 25 V)
  • Low power consumption
  • MIPI RFFE serial interface 1.8 V
  • Available in WLCSP for stand-alone or SiP module integration
  • RF tunable passive implementation in mobile phones to optimize the radiated performances
Product Specifications
DescriptionVersionSize
DS10107: Antenna tuning circuit1.0538 KB
Application Notes
DescriptionVersionSize
AN4440: RFFE HVDAC control1.01 MB
Technical Notes & Articles
DescriptionVersionSize
TN1173: Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches4.0330 KB
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STHVDAC-253MF3Flip-Chip 400uTape And Reel-25850.5710NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STHVDAC-253MF3Flip-Chip 400uIndustrialEcopack2md_a0h1-wspc-wlcsp0.4-rdl-wspc-4-49_kbh1dac7a65-wspc-(sthvdac-253mf3)-wspc-wcp-wspc-ver2_signed.pdf
md_a0h1-wspc-wlcsp0.4-rdl-wspc-4-49_kbh1dac7a65-wspc-(sthvdac-253mf3)-wspc-wcp-wspc-ver2.xml
Antenna tuning circuit STHVDAC-253M
RFFE HVDAC control STHVDAC-256MTG
Packing information for IPAD™, protection, rectifiers, thyristors and AC Switches FLC21
md_a0h1-wspc-wlcsp0.4-rdl-wspc-4-49_kbh1dac7a65-wspc-(sthvdac-253mf3)-wspc-wcp-wspc-ver2_signed.pdf STHVDAC-253M
md_a0h1-wspc-wlcsp0.4-rdl-wspc-4-49_kbh1dac7a65-wspc-(sthvdac-253mf3)-wspc-wcp-wspc-ver2.xml STHVDAC-253M