Table Of ContentDesign Guidelines/Training Slides
QFE2330/QFE2340 High-band
Multimode Power Amplifier with Mode
Switches
80-NF232-5 Rev. C
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Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm
or its subsidiaries without the express approval of Qualcomm’s Configuration Management.
Confidential and Proprietary – Qualcomm Technologies, Inc.
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Restricted Distribution: Not to be distributed to anyone who is not an employee of either Qualcomm or its subsidiaries without the express approval of Qualcomm’s
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Qualcomm is a trademark of QUALCOMM Incorporated, registered in the United States and other countries. All QUALCOMM Incorporated trademarks are used with
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This technical data may be subject to U.S. and international export, re-export, or transfer (“export”) laws. Diversion contrary to U.S. and international law is strictly prohibited.
Qualcomm Technologies, Inc.
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© 2013-2014 Qualcomm Technologies, Inc.
Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 2
Revision History (2 of 2)
Revision Date Description
A April 2013 Initial release
B February 2014 Slide 15: Updated PA power management from ET to APT + DPD for IMT-E (2600) bands
Slide 18: Updated the keep-out areas figure
Slide 20: Updated reference document number from 80-NF232-43 to 80-NA805-43 and added a new
reference document 80-NA805-50
Removed QFE PA example application slides
Slide 46: Removed ground groupings figure
Slide 47 and 48: Added new slides on ground connections
Slide 51: Updated figure on ground connections
Slide 54: Updated the Gerber file illustration
Removed specific design guidelines slides
C April 2014 Slide 7: Added legal text
Slide 11: Added MSM8906, MSM9x35, and MSM8994
Slide 17: Added the keep-out dimensions figure and added a keep-out area note
Slide 18: Updated to include 185 μm of solder ball height
Slides 20 and 21: Updated the document titles and added seven reference documents
Slides 39 and 40: Updated the matching topologies to reflect MTP
Slide 44: Removed the VDD shunt capacitor values in the diagram
Slide 45: Added the guidelines for the DC power layout and updated the figure to reflect MTP
Slide 46: Updated clear metal in some areas of the IC on layers 1, 2, and 3
Slide 47: Updated the QFE2340 ground groupings
Slide 48: Added the power supply routing recommendations for QFE2340 and a reference to the
design checklist
Slide 50: Updated the ground connections figure to be based on MTP
Slide 51: Updated the matching topologies and updated the figure to be based on MTP
Slide 52: Updated the schematic figure to reflect the latest MTP
Slide 53: Updated the ground connections by grouping figure to be based on MTP
Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 3
Contents
1 Introduction 5
1.1 Qualcomm Front-end (QFE) Overview 6
1.2 QFE2330 and QFE2340 Devices 12
1.3 QFE PA Support 19
2 QFE PA System-level Topics 22
3 QFE PA Implementation Guidelines 32
3.1 General Design Guidelines 33
Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 4
Section 1
1.1 Qualcomm Front-end (QFE) Overview 6
Introduction 1.2 QFE2330 and QFE2340 Devices 12
1.3 QFE PA Support 19
Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 5
Section 1.1
Qualcomm Front-end (QFE)
Overview
Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 6
QFE Overview
The QFE2330 and QFE2340 PA power management ICs are key components within the Qualcomm RF360™ front-end solution.
Qualcomm RF360 is a multimode, multiband front-end that includes power amplifier, PA power tracking, antenna switch, and
antenna tuner ICs – the first truly global RF solution for LTE products.
QFE2330 Supp QFE1100 or
QFE2330 or QFE2340 high-band PA 1 /2340 Ckts S&C QFE1101 PA 5 power management IC
ANT HB
Support
S&C
Generic RF circuits VBAT er nt
configuration shown – & owme
not RFIC-specific PA power (vcc) & PA vbat Atrpvaoecwrkaiengrge VcDloDcks PMIC mary panage
PRx MB & prim
S&C HB LNAs
Bypass &
GSM SWs
Support Power
Primary circuits detector cuits ers Envelope ET
QFE1520 cirert tracking DAC
Tuner Coupler HLBB GGHLBB aTmx pdlrifiiveerrs aseband & upconv Boost S&C
B converter
QFE
WTR
2310/ Supp RFIC QFE110x Modem
QFE1520 reconfigurable S&C
2 2320 Ckts IC
Z-matching for primary
S&C PLRNxA LsB ers & cuits
vertd cir
Support PDET & onan
Diversity circuits ET Rx wncseb
GNSS oa
QFE1550 LNA Db
DRx
Tuner LNAs
Support
S&C
circuits
QFE1550 reconfigurable
3
Z-matching for diversity 4 QFE2310 or QFE2320 converged Tx front-end
Sec. 1.1 Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 7
Key Components in the PA Subsystem
Key PA subsystem components and their QFE2330 Supp QFE110x delivers supply
S&C
primary functions are shown /2340 ckts current to active PA
6
ANT HB
Support
S&C
circuits VBAT er nt
QFE23x0 provides gain, 3 & owme
hseigvhe rPaAl s lweviteclhse, sand PA power (vcc) & PA vbat Apvoewraegre clock MIC ary page
tracking Pmn
VDDs a
PRx MB & rim
p
S&C HB LNAs
Bypass &
GSM SWs
Support Power
circuits detector s
Primary cuiters Envelope ET
QFE1520 cirert tracking DAC
HB GHB aTmx pdlrifiiveerrs band pconv Modem
Tuner Coupler LB GLB 2 Base& u Boost S&C IC
converter
QFE
QFE15x0 antenna tuner 2310/ Supp WTR QFE110x 5
4 2320 ckts S&C RFIC
provides matching;
1520 samples Tx power 1
S&C PLRNxA LsB erters & circuits Tx signals start
Support PDET & nvnd in modem IC
oa
circuits ET Rx nceb
Diversity ws
GNSS oa Modem IC adjusts Tx gains &
QFE1550 LNA Db
waveform, controls QFE110x
DRx
Tuner LNAs
Upconversion, gains, etc. in
Support
S&C
circuits RFIC that drives QFE23x0
Sec. 1.1 Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 8
Supplementing the QFE2310 and QFE2320 Converged Tx Front-ends (Introduction)
The power amplifiers within the QFE2310/QFE2320 converged Tx front-end do not cover high bands like B7,
B38, B40, and B41/XGP
The QFE2330/QFE2340 MB/HB antenna switch supports those high bands
The QFE2330/QFE2340 PA was created specifically to cover high bands
As shown below, the QFE2330/QFE2340 uses the QFE2310/QFE2320 antenna switch and supplements its
PAs to complete LB/MB/HB transmission requirements
QFE
Generic RF Supp
2330/2340 ckts shared status and control bus
configuration
ANT HB
HB Rx to RFIC
HB Tx from RFIC
shared PA power source
MB Rx to RFIC
MB Tx from RFIC
Supp
ckts
MB/
to/from HB
GHB
antenna
LB GLB
LB Tx from RFIC
LB Rx to RFIC
QFE
2310/2320
Sec. 1.1 Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 9
Two Converged Tx Front-end Devices and Two High-band PA Devices
Converged Tx Front-end
CDMA, UMTS, and GSM → use QFE2310
To add LTE, use QFE2320 instead
The PAs support low and mid bands only
The antenna switch also supports high bands
High-band PA
Add either the QFE2330 or QFE2340 to support high bands, including TDD
B7, B38, B41/XGP → use QFE2330
To add B40, use QFE2340
Sec. 1.1 Confidential and Proprietary – Qualcomm Technologies, Inc. | MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION | 80-NF232-5 Rev. C 10
