QUALCOMM Confidential and Proprietary

QUALCOMM Confidential and Proprietary80-VC881-22 Rev. A

April 2007

QUALCOMM Confidential and Proprietary

Restricted Distribution. Not to be distributed to non-employees of QUALCOMM or its subsidiaries without the express approval of QUALCOMM’s Configuration Management.

Not to be used, copied, reproduced in whole or in part, nor its contents revealed in any manner to others without the express written permission of QUALCOMM.

QUALCOMM is a registered trademark and registered service mark of QUALCOMM Incorporated. Other product and brand names may be trademarks or registered trademarks of their respective owners. CDMA2000 is a registered certification mark of the Telecommunications Industry Association, used under license. ARM is a registered trademark of ARM Limited. QDSP is a registered trademark of QUALCOMM Incorporated in the United States and other countries.

Export of this technology may be controlled by the United States Government. Diversion contrary to U.S. law prohibited.

QUALCOMM Incorporated5775 Morehouse Drive

San Diego, CA 92121-1714 U.S.A.

Copyright © 2007 QUALCOMM Incorporated. All rights reserved.

Page 1

QSC6055/QSC6065/QSC6075/QSC6085 Hardware Training

Analog/RF Topics

80-VC881-22 Rev. A


April 2007Page 2

Revision history

Revision Date Description

A April 2007 Initial release

The following information is licensed and

proprietary material.

Copyright © 2007 QUALCOMM Incorporated. All rights reserved.

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April 2007Page 3

QSC60X5 Analog/RF Overview

• Introduction to QSC60X5 analog/RF functions– Including introduction to QSC6075 and possible

tri-band CDMA with Rx diversity application

• RF Rx design guidelines

• RF Tx design guidelines

• External RF component recommendations


April 2007Page 4

Design Improvements

QSC6055/QSC6065 Block Diagram

QSC6055/6065Key Features

• RFCMOS Transceiver

• Dual band

• SGPS

• XO to reduce cost

• IntelliCeiverTM

• PA Bypass

• No AMPS

• No Rx Diversity

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April 2007Page 5

Design Improvements

QSC6075Key Features

• RFCMOS Transceiver

• Dual band

• Receive Diversity

• SGPS

• On Chip SHDR VCO

• XO to reduce cost

• IntelliCeiverTM

• PA Bypass

• No AMPS

QSC6075 Block Diagram


April 2007Page 6

Key Features – QSC6055, QSC6065, QSC6075

» High level of integration & simpler implementation• QSC6055’QSC6065 include one receiver and one transmitter; QSC6075 includes two receivers and one

transmitter• Include PLL and VCO’s for low and high CDMA bands• Include PLL and VCO’s for GPS • QSC6075 includes internal SHDR VCO/PLL function

» Improved power savings• Uses an advanced RF CMOS process• Include “PA Bypass” driver amp• Offer IntelliCeiverTM

YesYesYesYesYesYesYesNoYesYesYes

YesYesYesYes

RTR6500

YesYesYesYesNoYesYesNoNoYesn/a

n/aYesYesn/a

QSC6065/65

YesNoBlock G (BC14)YesYesIMT (BC6)

High Band

NoNoCDMA450 (BC5)

Low Bandn/aYesSBI / SSBI

YesNoAWS (BC15)

NoYesKPCS (BC4)YesYesPCS (BC1)

YesYesIntegrated LNA, VCO’s, and PLLs

YesNoCell Ext. (BC10)

NoYesJCDMA (BC3)YesYesUS Cell (BC0) [No AMPS]

YesYesSGPSYesYesNon-diversity

Yesn/aDiversity (both low band and high band)

Yesn/aSimultaneous HDR (no external VCO needed)

QSC6075/85RFR6185

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April 2007Page 7

Only the two RF functional blocks are discussed here (Rx and Tx). This material includes: functions, interfaces, design guidelines, etc.

Details for the audio and HKADC blocks are included in the Baseband section (for consistency with previous QCT training sessions).

QSC60X5 Analog/RF Functions

Four major functional blocks 1

RF transmittersw/ Tx LO

4 Housekeeping ADC

3

RF receiversw/ Rx LOs

2

Wideband audio CODEC

HKADCfrom handset

sensors

Analog / RF

PM AMUX_OUT

AAC/AAC+, AMR, CMX, EVRC, MIDI, MP3, QCELP

Handset speaker

Headset speaker

Handset microphone

CODEC supportAudio

AAC/AAC+, CMX, MIDI,

MP3

SW support

Earpiece speaker

Headset microphone

Power, GND, bias

Speaker driver

Power Management

Housekeeping ADC

Line in

Line out

power detect

LPF

QuadDconvert

CDMA Rx

GPS Rx

Jammer detect

Antenna

Tx DAC REF

gain ctl circuits

controlcircuitsctls

loop filter

bus

status & controls

F refRF_TCXO

QuadUconvert

QuadUconvert

TX LO circuits

LPF

loop filter

GRX LO circuits

ADC_I

REF & CLK Generation

ADC_Q

CRX LO circuits

loop filter

LPF LPFBPF

BPFLPF LPF

ADC_I

ADC_Q

RF Transmitter

J status

frontend

module

LPF LPF

LPF LPF

frontend

module

Tx

Tx

One-touch headset detect

F ref

QuadDconvert

QuadDconvert


April 2007Page 8

Analog/RF Features

• RF transmitters– Optimized for dual-band CDMA

» Cell and PCS/AWS, voice and data– Full upconversions (analog BB to RF)– Transmit signal path circuits

» Baseband amplifiers & filters» BB-to-RF quadrature upconverter» RF AGC amplifiers and driver amps» Two Tx outputs per band → PA bypass

– Complete Tx LO source (VCO, PLL, dist)– 85 dB Tx gain control range– Power reduction features; more talk time

• RF receivers– Optimized for dual-band CDMA + GPS

» Cell and PCS/AWS, voice and data– 1x voice and data; Simultaneous-GPS– IntelliCeiver™ technology– Full downconversions from RF to BB– Rx signal path circuits (2 CDMA + GPS)

» RF amplifiers (including LNA)» Stepped gain control» RF-to-BB quadrature downconverters» Lowpass filters, baseband amplifiers» Analog-to-digital converters

– Complete Rx LO sources (VCO, PLL, dist)» Separate CDMA and GPS LOs

– ADC reference and clock circuits

• Housekeeping ADC– 5:1 mux (2 external, 2 from RF Tx, 1 from PM amux)– Selectable reference voltage– 12-bit resolution; 10-bit accuracy; 2.4 MHz sampling– Monitors handset functions

» VBAT, temp, HDET, XO_THERM, PA_THERM, etc

• Audio CODEC– Tx inputs: handset & headset microphones, line-in

» Summing of DAC line-in outputs– Rx outputs: earpiece & headphone, speaker, line-out

» Capless or cap-coupled stereo headphone configurations» Simultaneous output port operation

– Microphone bias and one-touch headset control– FM radio mono record– Many programmable Rx and Tx parameters– Software support (within baseband circuits)

» EVRC, 13k QCELP, ADPCM» 4GV – narrow band» MP3 decode mono playback» I2S interface for external SDAC» Acoustic echo cancellation for speakerphones» Polyphonic support» Compact Media Extension (CMX)» Audio playback from memory or download files» Voice and digit dialing» Voice memo/conversation recording (half-duplex)

Analog features are covered in the Baseband section

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April 2007Page 9

Tri-band Implementation with Rx Diversity

QSC6075 device

HB LNA

LB LNA

CellBPF

Antenna

PCSBPF

Rx

Tx

CellBPF

Tx_samplePower detector

bypass PA

AWSBPF

bypass PA

PA

Rx

Tx

Rx

Tx

GPSBPF

CellBPF

PCSBPF

AWSBPF

Antenna

PCSBPF

AWSBPF

LB Tx (1 of 2)

LB Tx (2 of 2)

HB Tx (2 of 2)

HB Tx (1 of 2)

LB downconverter

HB downconverter

GPS in

LB SRx in

HB SRx in


April 2007Page 10

QSC6055 BC0 / BC1 RF Section Block Diagram

• PA Bypass in both bands

• SGPS

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April 2007Page 11

QSC6055 BC0/BC1/BC15 RF Section Block Diagram

• PA Bypass in three bands

• SGPS

• High band switches

QSC

6055

Bas

eban

d


April 2007Page 12

QSC6075 BC0/BC1 RF Section Block Diagram

• PA Bypass in both bands

• SGPS

• SHDR

• On-chip SHDR VCO

• Rx Diversity

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April 2007Page 13

Receiver Design Guidelines

• RF receiver block diagram and features

• Pin assignments

• RF Rx interfaces

• Rx LO and PLL topics

• DC power connections to Rx functions

• Rx performance specifications

See the “PCB Layout Guidelines” section (80-VC881-25) for RF Rx layout suggestions – presented later today


April 2007Page 14

QSC60X5 RF Receiver Features

• Optimized for dual-band CDMA + GPS– CDMA: Cell + PCS/AWS

• 1x voice and data; Simultaneous-GPS

• IntelliCeiver™ technology

• Full downconversions from RF to BB

• Complete Rx LO sources (VCO, PLL, dist)– Separate CDMA and GPS LOs

MN

MN

MN

MN

to b

aseb

and

circ

uits

MN

MN

tripl

exer

MN

to b

aseb

and

circ

uits

• Rx signal path circuits (2 CDMA + GPS)– RF amplifiers (including LNA)– Stepped gain control– RF-to-BB quadrature downconverters– Lowpass filters, baseband amplifiers– Analog-to-digital converters

• ADC reference and clock circuits

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April 2007Page 15

10 11 12 13 14 15 16 17 18 19 20 21 22 23

UART1 GPIO MODE VDD GND RX_IN GND GND RX_IN RX_IN RBIAS LNA_OUT LNA_OUT GND

_RX_D _8 _2 _RFRX2 _A_RF _GPS _A_RF _A_RF _C_LB _C_HB _RX _C_LB _C_HB _A_RF

UART1 GPIO MODE VDD GND GND GND GND GND GND GND VDD_ GND MIX_INP

_TX_D _28 _1 _RFRX2 _A_RF _A_RF _A_RF _A_RF _A_RF _A_RF _A_RF RFRX1 _A_RF _C_LB

GPIO VDD VDD VCO_ VDD VDD VDD VDD VDD_ GND VDD_ VDD_ VDD_ MIX_INM

_30 _P5 _CORE TUN_GRX _RFRX2 _RFRX2 _RFRX2 _RFRX2 RFRX1 _A_RF RFRX1 RFRX1 RFRX1 _C_LB

VCO_ GND MIX_INP

TUN_CRX _A_RF _C_HB

GPIO VDD GND VDD GND VDD GND VDD_ GND MIX_INM

_27 _P4 _DIG _RFRX2 _A_RF _RFRX2 _A_RF RFRX1 _A_RF _C_HB

WDOG MODE GND VDD VDD GND LINE_IN GND VDD GND

_EN _0 _DIG _RFRX1 _RFRX2 _A_RF _R_N _A_RF _RFRX1 _A_RF

LINE_IN VDD

_L_P _A

DNC

DNC DNC

DNCDNC

CCOMP

MIC2P MIC1NMIC1P

A

C

B

D

F

E

G

QSC60X5 RF Receiver Pin Assignments

CD

MA

LN

A in

pu

ts –

low

ban

d &

hig

h b

and

Ext

ern

al L

NA

bia

s re

sist

or

CDMA downconverterinputs – low band

& high bandGPS Rx LO charge pump output & VCO tuning port

CDMA Rx LO charge pump output & VCO tuning port

GPS LNA input

CD

MA

LN

A o

utp

uts

–lo

w b

and

& h

igh

ban

d

QSC6075 will use A16 and A17 for Cell and PCS secondary CDMA inputs


April 2007Page 16

from

du

plex

er Cel

lula

r R

x B

PF

Low Band CDMA RF Receiver Interfaces

• Values shown are recommendedstarting values; each handset willrequire empirical optimization

• Components labeled “DNI” werenot required in the reference designbut should be included in initiallayouts for optimization flexibility

• Parallel RL combination provides DC bias path and is also part of the RF matching network

• Locate the 100 pF capacitor(C23) as close to the RL nodeas possible (AC ground)

• High-Q, tight-tolerance inductorscan be used to reduce losses andimprove LNA performance if needed(0402 package is recommended)

• DC blocking capacitors arerequired between SAW devicesand LNA ports to avoid stressfrom DC voltage that might impactSAW performance over time

• Downconverter requires differential input for common-mode rejection and 2nd-order non-linearity performance

• Maintain symmetry from filter to MIX_IN; RF phase and amplitude balance

• Grounds must be connected directly fromcomponent pads to inner layer ground plane

See QSC60X5 Design Guidelines (80-VC881-5) for the recommended matching procedure

• 1% external bias resistor

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April 2007Page 17

High Band CDMA & GPS RF Receiver Interfaces

•GPS: Customer can’t really measure gain and noise figure in GPS. The matching procedure for GPS should be changed. Measurement of S11 should be used to get an initial Matching Network. Customer can try to see if they can

arrive at optimal Matching Networks by maximizing C/No reported by QDART.

from

du

plex

er PC

SR

x BP

F

from

tri

plex

er

•Low band CDMA comments apply – see previous page


April 2007Page 18

RF Receiver LO and PLL Topics

! Baseline Rx PLL loop filter design; see Design Guidelines (80-VC881-5) for updates and more information

! Request loop filter design assistance using https://support.cdmatech.com if needed

• Two Rx LO synthesizers are fullyintegrated except their loop filters CDMA (shared by low & high bands) Dedicated GPS

• Each loop filter requires just twocapacitors and one resistor

• Locate all near the QSC pins,giving priority to “C2”

• Ground R1 and C2 directly tothe nearby QSC ground

• Use 1% resistors, 10% capacitors

4.7 nF

Band CP_I PM loop BW lock time R1 C1 C2

Cellular CDMA TBD mA TBD deg TBD kHz TBD msec 560 82 nF 5.6 nF

US PCS CDMA TBD mA TBD deg TBD kHz TBD msec 560 82 nF 5.6 nF

GPS TBD mA TBD deg TBD kHz TBD msec 422 68 nF 4.7 nF

Loop filter component valuesLoop parameters

4.7 nF

4.7 nF

499

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April 2007Page 19

RF Receiver DC Power Connections

• The power supply groupings shown at the left should be followed in all new designs.

• Pads for series resistors are included several places (zero-Ω Rs) to allow isolating elements to be inserted during PCB development; they can be omitted from production designs if not needed.

• Each supply grouping includes one pin that requires a non-zero series R (VCO supplies):

– VDD_RFRX1 pin C20 uses 2.2 Ω– VDD_RFRX2 pin E13 uses 4.7 Ω

• Some input pins require individual bypass caps (such as B21), but most allow a single bypass cap to be shared by multiple pins. Locate near QSC pins.

• Minimize IR drops and inductive transients by keeping traces as short as possible and by using wide traces or fill areas.

• Use multiple vias, large vias, and/or or filled vias when routing between layers to avoid high resistance.

• Pins H16 and H22 are VDD_RFTX pins, but they are connected to the VREG_RFRX1 output to ensure they are powered up earlier than other VDD_RFTX pins (required to meet internal timing constraints).


April 2007Page 20

RF Rx Performance Specifications

• The QSC60x5 CDMA receivers are fully compliant with the applicable standards, including the key parameters listed in the table below.

• Meeting these specifications requires adequate performance by key external RF components, including:

– Cellular/PCS/GPS triplexer– Cellular and PCS duplexers– Cellular and PCS Rx inter-stage bandpass filters– Cellular and PCS Tx output filters– Cellular and PCS power amplifiers

• External component requirements are discussed in detail shortly.

• Provided the external RF components meet their requirements, the QSC RF receivers’performance is adequate to ensure compliance with the applicable standards.

Parameter Test conditions Min Typ Max Units Min Typ Max Units

Sensitivity (IS-98, 3.5.1) -108.5 dBm -107.5 dBm

Dynamic range (IS-98, 3.5.1) -25.0 dBm -25.0 dBm

Single-tone desensitization (IS-98, 3.5.2) -101 dBm Ior -30.0 dBm -30.0 dBm

Intermodulation spurious response attenuation -101 dBm Ior -43.0 dBm -43.0 dBm

(two-tone desensitization; IS-98, 3.5.3) -90 dBm Ior -32.0 dBm N/A dBm

-79 dBm Ior -21.0 dBm N/A dBm

Cellular band US PCS band

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April 2007Page 21

RF Receiver Questions?

! Also, you can submit questions to https://support.cdmatech.com at any time.


April 2007Page 22

Transmitter Design Guidelines

• RF transmitter block diagram and features

• Pin assignments

• RF Tx interfaces

• Bypass PA

• Tx LO and PLL topics

• DC power connections to Tx functions

• Example Tx performance specifications

See the “PCB Layout Guidelines” section (80-VC881-25) for RF Tx layout suggestions – presented later today

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April 2007Page 23

• Transmit signal path circuits– Baseband amplifiers & filters

– BB-to-RF quadrature upconverter– RF AGC amplifiers and driver amps

– Two Tx outputs per band → PA bypass

• Power reduction features; more talk time

QSC60X5 RF Transmitter Features

• Optimized for dual-band CDMA– Cell and PCS/AWS, voice and data

• Full upconversions (analog BB to RF)

• Complete Tx LO source (VCO, PLL, dist)

• 85 dB Tx gain control range

Tx DAC REF

QuadratureUpconverter

Antenna

QSC60x5 RF Transmitters

LPFTx LO

K23

L23

MN

LPF

PCSBPFPARx

Tx QuadratureUpconverter

G_ctlTx PWRdetector

M23

N23

J16

toPCS Rx

CellBPFPARx

Tx

toCell Rx

MN

Tx_sample

MN

MN

RBIAS_TX

H23

Cell front-end module or discrete components

PCS front-end module or discrete components

toGPS Rx


April 2007Page 24

QSC60X5 RF Transmitter Pin Assignments

Tx power detector input

Tx

LO

ch

arg

e p

um

p o

utp

ut

& V

CO

tu

nin

g p

ort

Ext

ern

al T

x b

ias

resi

sto

r

14 15 16 17 18 19 20 21 22 23

VDD VDD VDD VDD VDD_ GND VDD_ VDD_ VDD_ MIX_INM

_RFRX2 _RFRX2 _RFRX2 _RFRX2 RFRX1 _A_RF RFRX1 RFRX1 RFRX1 _C_LB

VCO_ GND MIX_INP

TUN_CRX _A_RF _C_HB

GND VDD GND VDD_ GND MIX_INM

_A_RF _RFRX2 _A_RF RFRX1 _A_RF _C_HB

VDD GND LINE_IN GND VDD GND

_RFRX2 _A_RF _R_N _A_RF _RFRX1 _A_RF

LINE_IN VDD

_L_P _A

GND GND VDD VDD GND VDD PWR_

_A_RF _A_RF _RFTX _RFTX _A_RF _RFTX DET_IN

GND GND RBIAS GND VCO_ VDD GND VDD

_A_RF _A_RF _TX _A_RF TUN_TX _RFTX _A_RF _RFTX

GND GND VDD VDD GND VDD VDD TX_OUT

_A_RF _A_RF _RFTX _RFTX _A_RF _RFTX _RFTX _LB_B

GND GND HPH_OUT LINE_OUT GND TX_OUT

_A_RF _A_RF _R_N _L_P _A_RF _LB_A

GND GND VDD VDD HPH_ HPH_OUT LINE_OUT TX_OUT

_A_RF _A_RF _A _A VNEG _L_P _R_N _HB_A

GND GND GND GND VDD VDD TX_OUT

_A_RF _A_RF _A_RF _A_RF _A _A _HB_B

GND GND NCP_ VREG VDD XO_ADC

_DIG _DIG CTC1 _NCP _IN2 _REF

DNC

DNC DNC

NCP_FB

EAR1OP

DNCDNC

CCOMP

MIC2P

HKAIN1

MIC1NMIC1P

MIC2N

C

D

EAR1ON

F

E

K

J

H

G

M

L

HKAIN0 P

N

Two CDMA low band Tx outputs (supports PA bypass)

Two CDMA high band Tx outputs (supports PA bypass)

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April 2007Page 25

C112 pF

L1DNI

Antenna

QSC60x5 RF Transmitter

toGPS Rx

K23

L23G_ctl

Tx PWRdetector

H23

C212 pF

L2DNI

C312 pF

L3DNI

M23

N23

C412 pF

L4DNI

Tx_sample

Cellular front-end moduleor discrete components

PCS front-end moduleor discrete components

from Cellular upconverter

from PCS upconverter

DA

G_ctl

DA

DA

DA

QSC60X5 RF Transmitter Interfaces

• Values shown are recommendedstarting values; each handsetrequires empirical optimization

• Components labeled “DNI” werenot required in the reference designbut should be included in initiallayouts for optimization flexibility

• Two outputs for each band –supports PA bypassing

See QSC60X5 Design Guidelines (80-VC881-5)for the recommended matching procedure.

• One output to the Tx chain (Tx filter, PA, and SPDT switch);other directly to SPDT switch (thereby bypassing PA)

• QSC ports are not AC-coupled;external DC-blockingcapacitors are required

• If PA bypass is not supported, leave unused output open• Each Tx output is 50-Ohm

nominal (single-ended)

bypass PA devices (PA + SW) are

currently available

bypass PA devices (PA + SW) are

currently available


April 2007Page 26

Typical Connection for Bypass PA

QSC60x5DA

DATx

filter

VGA

EN

B

Mo

d e

VC

C

RF_INB

RF_IN

PA

_ON

PA

_R

AN

GE

PA_ON signal is routed to the Bypass PA directly from QSC60X5

The Bypass PA is 3X3 mm package.

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April 2007Page 27

RF Transmitter LO and PLL Topics

! Baseline Tx PLL loop filter design; see Design Guidelines (80-VC881-5) for updates and more information

! Request loop filter design assistance using https://support.cdmatech.com if needed

• The Tx LO synthesizer is fullyintegrated except its loop filter(shared by low & high bands)

• The loop filter requires just twocapacitors and one resistor

• Locate all near the QSC pins,giving priority to “C2”

• Ground R1 and C2 directly tothe nearby QSC ground

• Use 1% resistor, 10% capacitors

TXVCO

to Tx LOdistribution

circuits

QSC Tx LO circuits

VCO_TUNE_TX

REF

PLL circuits

to Rx PLLs

J19

loop filter

R1C2

C1

CP_OUTfrom TCXO distribution

circuits

FDBK

Band CP_I PM loop BW lock time R1 C1 C2

Cellular CDMA TBD mA TBD deg TBD kHz TBD msec 1.02 k 8.2 nF 560 pF

US PCS CDMA TBD mA TBD deg TBD kHz TBD msec 1.02 k 8.2 nF 560 pF

Loop parameters Loop filter component values

2.2 k

2.2 k

10 nF

10 nF

470 pF

470 pF


April 2007Page 28

RF Transmitter DC Power Connections

• The power supply groupings shown at the right should be followed in all new designs.

• Pads for series resistors are included several places (zero-Ω Rs) to allow isolating elements to be inserted during PCB development; they can be omitted from production designs if not needed.

• One VREG_RFTX supply path requires a non-zero series R (VCO supply): pin H18 uses 10 Ω

• Some input pins require individual bypass caps (such as K22), but most allow a single bypass cap to be shared by multiple pins. Locate near QSC pins.

• Minimize IR drops and inductive transients by keeping traces as short as possible and by using wide traces or fill areas.

• Use multiple vias, large vias, and/or or filled vias when routing between layers to avoid high resistance.

• Pins H16 and H22 are VDD_RFTX pins, but they are connected to the VREG_RFRX1output to ensure they are powered up earlier than other VDD_RFTX pins (required to meet internal timing constraints).

VREG_RFRX1

RFTX regulator

VREG_RFTX T19

C18 VDD_RFRX1F13 VDD_RFRX1F21 VDD_RFRX1H16 VDD_RFTXE21 VDD_RFRX1H22

VDD_RFTX

H18 VDD_RFTX10

1.0 uF

K22 VDD_RFTXzero

1.0 uF

J21 VDD_RFTXzero

K18 VDD_RFTXJ23 VDD_RFTX

zero

K16 VDD_RFTXK21 VDD_RFTX

1.0 uF

1.0 uF

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April 2007Page 29

Example RF Tx Performance Specifications

! CDMA low band transmitter

! Tx power detector

See the Device Specification for complete specs

! CDMA high band transmitter

Parameter Min Typ Max Units

Input RF power -11 +2.0 dBm

Average power accuracy

P_IN from -11 to -7 dBm +/- 0.35 dB

P_IN from -7 to +2 dBm +/- 0.35 dB


Output power, max CDMA +7.0 dBm

Output power, min CDMA -75 dBm

Gain flatness -1.5 +1.5 dB

ACPR, 885 kHz offsets

PA mode -48.0 dBc/30 kHz

PA bypass mode -42.5 dBc/30 kHz

ACPR, 1.98 MHz offsets



Rx-band noise power

Cellular Rx band -135 dBm/Hz

GPS band -135 dBm/Hz


Output power, max CDMA +7.0 dBm

Output power, min CDMA -75 dBm

Gain flatness -1.5 +1.5 dB

ACPR, 885 kHz offsets



ACPR, 1.98 MHz offsets



Rx-band noise power

PCS Rx band -135 dBm/Hz

GPS band -135 dBm/Hz


April 2007Page 30

Cell RxBPF

B23

LNA

LNAC23

PCS RxBPF

D23

E23

A21

A22

A18

A19

LNA

A15

Antenna

K23

L23

PARx

Tx

Tx PWRdetector

M23

N23

CellBPFPA

Tx_sampleH23

QSC device

PCSBPF

Rx

Tx

External RF Component Recommendations

1) Triplexer2) Duplexers3) Couplers4) Bypass PAs5) Tx bandpass filters6) Rx bandpass filters

4 5

12 3

6

Key RF components:

QSC60x5 specifications rely upon adequate performance by these external components …

2

3

4 5

6

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April 2007Page 31

RF Components (1 of 6)

• Triplexer– Reference design used EPCOS B30231-D1034-R110– Key performance requirements:

» Ant port to Cell port insertion loss: < 1.0 dB» Ant port to PCS port insertion loss: < 0.6 dB» Ant port to GPS port insertion loss: < 2.0 dB» Cell port to GPS port attenuation, Cell Tx band: > 42 dB» Cell port to GPS port attenuation, GPS Rx band: > 10 dB» PCS port to GPS port attenuation, Cell Tx band: > 42 dB» PCS port to GPS port attenuation, GPS Rx band: > 10 dB

• Cellular duplexer– Reference design used Murata Erie SAYZW836MAD0F– Key performance requirements:

» Ant port to Rx port insertion loss: < 3.5 dB» Ant port to Rx port attenuation of BC0, BC1, and BC6 Tx jammers: > 35, 35, 35

dB» Ant port to Rx port attenuation of ISM Tx band: > 30 dB» Ant port to Rx port linearity (triple-beat): > 86 dB» Tx port to ant port insertion loss: < 2.5 dB» Tx port to ant port attenuation, Cell Rx band: > 44 dB (48 dB typ)» Tx port to ant port attenuation, GPS, PCS, IMT Rx bands: > 40, 27, 27 dB» Tx port to Rx port attenuation, Tx band over +15 to +65 °C: > 55 dB» Tx port to Rx port attenuation, Rx band: > 45 dB


April 2007Page 32


• PCS duplexer– Reference design used Agilent Technologies ACMD-7402-TR1– Key performance requirements:

» Ant port to Rx port insertion loss over +15 to +65 °C: < 3.5 dB» Ant port to Rx port attenuation of BC0 and BC1 Tx jammers: > 35, 35 dB» Ant port to Rx port attenuation of GPS Rx, ISM Tx band: > 40, 30 dB» Ant port to Rx port linearity (triple-beat): > 86 dB» Tx port to ant port insertion loss: < 3.0 dB» Tx port to ant port attenuation, PCS Rx band: > 44 dB (48 dB typ)» Tx port to ant port attenuation, GPS, Cellular Rx bands: > 40, 27 dB» Tx port to Rx port attenuation, Tx band over +15 to +65 °C: > 55 dB» Tx port to Rx port attenuation, Rx band: > 44 dB (48 dB typ)

• AWS duplexer– Reference design used Murata Erie SAYZY1G73AA0FT0– Key performance requirements:

» Ant port to Rx port insertion loss over +15 to +65 °C: < 3.0 dB» Ant port to Rx port attenuation of BC0 and BC1 Tx jammers: > 35, 35 dB» Ant port to Rx port linearity (triple-beat): > 86 dB» Tx port to ant port insertion loss: < 3.0 dB» Tx port to ant port attenuation, AWS Rx band: > 48 dB» Tx port to ant port attenuation, GPS, Cellular Rx bands, PCS Rx bands: > 44, 27, 27 dB» Tx port to Rx port attenuation, Tx band over +15 to +65 °C: > 60 dB

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April 2007Page 33


• Directional couplers– Reference design used:

» AVX Corp CP0402A0836ENTR for Cell (27 dB nominal)» AVX Corp CP0402A1880FNTR for PCS and AWS (27 dB nominal)

• Cellular Bypass PA– Reference design used Anadigics AWT6331RM27Q7– Key performance requirements:

» Rated P_OUT: > +28 dBm» Gain at +28 dBm, < +16 dBm, < 0 dBm (bypass): > +24, +13, -3.0 dB» Rx band noise power, Cell and GPS bands: < -135 dBm/Hz» ACPR at 885 kHz offset, 1.98 MHz offset: < -44 dBc, -57 dBc

• PCS Bypass PA– Reference design used Anadigics AWT6332RM27Q7– Key performance requirements:

» Rated P_OUT: > +28 dBm» Gain at +28 dBm, < +16 dBm: > +25, +13 dB» Rx band noise power, GPS and PCS bands: < -135 and -140 dBm/Hz» ACPR at 1.25 MHz offset, 2.25 MHz offset: < -44 dBc, -57 dBc


April 2007Page 34


• Cellular Tx bandpass filter– Reference design used Murata Erie SAFEB836MAL0F00– Key performance requirements:

» Insertion loss: < 2.5 dB» Attenuation DC to 800 MHz, Cell Rx, GPS Rx, IMT Rx: 35, 40,

35, 35 dB» Input power without performance degradation: > +15 dBm

• PCS Tx bandpass filter– Reference design used EPCOS B39192-B9014-E910– Key performance requirements:

» Insertion loss: < 3.5 dB» Attenuation Cell Rx, GPS Rx, extended IMT Rx, PCS Rx, ISM Rx:

10, 35, 10, 35, 35 dB» Input power without performance degradation: > +20 dBm

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April 2007Page 35


• AWS Tx bandpass filter– Reference design used Murata Erie SAFEA1G73AA0FT0– Key performance requirements:

» Insertion loss: < 3.0 dB» Attenuation DC to 1500 MHz, Cell Rx, GPS Rx, PCS Rx: 25, 40,

35, 40 dB» Input power without performance degradation: < +13 dBm

• Cellular Rx bandpass filter– Reference design used Fujitsu Media Devices FAR-F5KB-

881M50-B4ED– Key performance requirements:

» Insertion loss: < 3.0 dB» Attenuation 10 to 824 MHz, Cell Tx: 30, 35 dB» Amplitude and phase imbalance: see curve below


April 2007Page 36


• PCS Rx bandpass filter– Reference design used Murata Erie SAFEB1G96FL0F00– Key performance requirements:

» Insertion loss: < 3.0 dB» Attenuation 10 to 1850 MHz, PCS Tx: 30, 23 dB» Amplitude and phase imbalance: see curve

• AWS Rx bandpass filter– Reference design used Murata

Erie SAFEB2G14FB0F00– Key performance requirements:

» Insertion loss: < 2.5 dB» Attenuation 10 to 1710 MHz,

AWS Tx: 30, 35 dB» Amplitude and phase

imbalance: see curve

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April 2007Page 37

RF Transmitter or RF Component Questions?

! Also, you can submit questions to https://support.cdmatech.com at any time.

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Documents

QUALCOMM Confidential and Proprietary