AN4440 datasheet(1/36 Pages) STMICROELECTRONICS

Il numero della parte	AN4440

Spiegazioni elettronici	RFFE HVDAC control

PDF	36 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

Logo

1 / 36 page

April 2014

DocID025913 Rev 1

1/36

AN4440

Application note

RFFE HVDAC control

Pascal Paillet

Introduction

The purpose of this application note is to familiarize mobile phone designers with RFFE

HVDAC control. Common tasks are explained and more advanced functions such as trigger

mode, extended mode or USID reprogramming are also detailed. Each frame or the

significance of the sequence is explained and illustrated with concrete examples tested with

the antenna utility tools (AUT) and the HVDAC control board either in full automatic mode or

manually (bit by bit).

HVDAC is used in mobile phones for antenna tunability. This is a programmable DC/DC

converter supplying the bias voltage for PTIC variable capacitors.

Although both SPI and RFFE interface options exist, this document concerns the latter

which is now mainstream.

www.st.com

Codice articolo simile - AN4440

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
STMicroelectronics	AN444	50Kb / 5P	DISSIPATION POWER AND SURGE CURRENT DURATION 16-Apr-2004
	AN4441	343Kb / 5P	Start time of the RHFLVDS32A receiver 14-Feb-2014
	AN4442	154Kb / 3P	Two-channel LVDS repeater with the RHFLVDSR2D2 18-Feb-2014
	AN4443	97Kb / 3P	Fail-safe feature of the RHFLVDS32A and RHFLVDSR2D2 28-Feb-2014
	AN4444	3Mb / 68P	ST7590 PRIME compliant power line networking SoC design guide 30-Oct-2014

Produttore elettronici	Il numero della parte	Scheda tecnica	Spiegazioni elettronici
Infineon Technologies A...	BGS16MN14	1Mb / 17P	SP6T Diversity Antenna Switch with MIPI RFFE Interface
AVAGO TECHNOLOGIES LIMI...	ACPM-7620	185Kb / 4P	Compatible with MIPI RFFE
Skyworks Solutions Inc.	SKY13594-666LF	181Kb / 2P	3P4T Transmit/Receive LTE Switch with MIPI RFFE Compatibility
Will Semiconductor Ltd.	WS7808QM	565Kb / 12P	0.1GHz??GHz SP8TDiversityAntenna Switch with MIPI RFFE Interface
Will Semiconductor Ltd.	WS7810QM	1Mb / 12P	0.1GHz??GHz SP10T Diversity Antenna Switch with MIPI RFFE Interface
Infineon Technologies A...	BGS110MN20	1Mb / 18P	SP10T Diversity Antenna Switch with MIPI RFFE Interface Revision 3.1 - June 23, 2016
	BGSX24MU16	730Kb / 20P	DP4T Antenna Cross Switch with MIPI RFFE Control Interface Revision 2.0 2019-09-06
	BGSX33MU16	665Kb / 18P	3P3T Antenna Cross Switch with MIPI RFFE Control Interface Revision 2.0 2019-06-24
	BGSX44MA12	422Kb / 17P	4P4T Rx Switch with MIPI RFFE Interface Revision 2.2 2018-05-28
	BGSX33M5U16	1Mb / 25P	3P3T antenna cross switch with MIPI RFFE control interface Revision 2.0 2022-03-25