STHVDAC-304M 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

技术特性

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

引脚定义图

STHVDAC-304M 功能框图

应用领域

Cellular antenna tunable matching network in multi-band GSM/WCDMA mobile phone
Compatible with open loop antenna tuner applications

DATASHEET

描述	版本	大小
STHVDAC-304M :DS8994: High voltage BST capacitance controller	3	344KB