STHVDAC-253M Datasheet, PDF (1/27 Pages) STMicroelectronics – Antenna tuning circuit

STHVDAC-253M
Antenna tuning circuit
Lead-free, Flip Chip
(16 bumps)
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
Application
• Cellular antenna tunable matching network in
multi-band GSM/WCDMA mobile phone
• Compatible with open loop antenna tuner
applications
Datasheet − production data
Description
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.
Figure 1. Pin configuration bumps side view
4
3
2
1
A
AVDD IND_BOOST GND_BOOST DATA
VHV
GND
GND_DIG
RBIAS GND_REF GND
B
CLK
C
VIO
OUTC
OUTB
OUTA
D
SELSID
February 2014
This is information on a product in full production.
DocID025735 Rev 1
1/27
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