RF3146DPCBA-41X RFMD [RF Micro Devices], RF3146DPCBA-41X Datasheet

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RF3146DPCBA-41X

Manufacturer Part Number
RF3146DPCBA-41X
Description
DUAL-BAND GSM900/DCS POWER AMP MODULE
Manufacturer
RFMD [RF Micro Devices]
Datasheet
Product Description
The RF3146 is a high-power, high-efficiency power ampli-
fier module with integrated power control. The device is a
self-contained 7mmx7mmx0.9mm lead frame module
(LFM) with 50Ω input and output terminals. The power
control function is also incorporated, eliminating the need
for directional couplers, detector diodes, power control
ASICs and other power control circuitry; this allows the
module to be driven directly from the DAC output. The
device is designed for use as the final RF amplifier in
EGSM900 and DCS handheld digital cellular equipment
and other applications in the 880MHz to 915MHz and
1710MHz to 1785MHz bands. On-board power control
provides over 50dB of control range with an analog volt-
age input; and, power down with a logic “low” for standby
operation.
Optimum Technology Matching® Applied
3146
Rev A11 060719
BAND SELECT
Typical Applications
• 3V Dual-Band GSM Handsets
• Commercial and Consumer Systems
• Portable Battery-Powered Equipment
TX ENABLE
Si BJT
Si Bi-CMOS
InGaP/HBT
VRAMP
GSM IN
DCS IN
VBATT
VBATT
Functional Block Diagram
37
40
41
42
43
45
48
Power Control Circuit
Fully Integrated
GaAs HBT
SiGe HBT
GaN HEMT
0
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
31
6
DCS OUT
GSM OUT
Package Style: LFM, 48-Pin, 7mm x7mmx0.9mm
• EGSM900/DCS Products
• GPRS Class 12 Compatible
• Power Star
• Integrated V
• Complete Power Control Solution
• +35dBm GSM Output Power at 3.5V
• +33dBm DCS Output Power at 3.5V
• 60% GSM and 55% DCS
• 7mmx7mmx0.9mm Package Size
Features
Ordering Information
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
RF3146D
RF3146D SB
RF3146DPCBA-41X
0.10 C B
0.10 C A
2 PLCS
Shaded lead is pin 1.
2 PLCS
-A-
TM
Module
REG
7.00 TYP
6.75 TYP
0.60
0.24
Dual-Band GSM900/DCS Power Amp Module
Power Amp Module 5-Piece Sample Pack
Fully Assembled Evaluation Board
0.50
0.30
0.60
0.24
TYP
DUAL-BAND GSM900/DCS
0.30
TYP
Dimensions in mm.
TYP
2 PLCS
3.37 TYP
3.50 TYP
2 PLCS
POWER AMP MODULE
0.10 C A
0.10 C B
5.25
4.95
-B-
0.30
0.18
RF3146D
0.10 C A B
EFF
M
0.50
0.70
0.65
2.20
1.90
0.08 C
http://www.rfmd.com
Fax (336) 664 0454
Tel (336) 664 1233
-C-
SEATING
PLANE
0.90
0.85
0.05
0.00
2-491

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RF3146DPCBA-41X Summary of contents

Page 1

... GSM Output Power at 3.5V 31 DCS OUT • +33dBm DCS Output Power at 3.5V • 60% GSM and 55% DCS • 7mmx7mmx0.9mm Package Size Ordering Information RF3146D RF3146D SB 6 GSM OUT RF3146DPCBA-41X RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA RF3146D DUAL-BAND GSM900/DCS POWER AMP MODULE Module TM 0. 0.08 C ...

Page 2

RF3146D Absolute Maximum Ratings Parameter Supply Voltage Power Control Voltage (V ) RAMP Input RF Power Max Duty Cycle Output Load VSWR Operating Case Temperature Storage Temperature Parameter Min. Overall Power Control V RAMP Power Control “ON” Power Control “OFF” ...

Page 3

Parameter Min. Overall (GSM900 Mode) Operating Frequency Range Maximum Output Power Total Efficiency Input Power Range Output Noise Power Forward Isolation 1 Forward Isolation 2 Cross Band Isolation 2f 0 Second Harmonic Third Harmonic All Other Non-Harmonic Spurious Input Impedance ...

Page 4

RF3146D Parameter Min. Overall (DCS Mode) Operating Frequency Range Maximum Output Power +31.5 29.5 Total Efficiency Input Power Range Output Noise Power Forward Isolation 1 Forward Isolation 2 Second Harmonic Third Harmonic All Other Non-Harmonic Spurious Input Impedance Input VSWR ...

Page 5

Pin Function Description 1 NC Internal circuit node. Do not externally connect. 2 VCC2 GSM Controlled voltage input to the GSM driver stage. This voltage is part of the power control function for the module. This node must be con- ...

Page 6

RF3146D Pin Function Description 31 DCS OUT RF output for the DCS band. This is a 50Ω output. The output matching circuit and DC-block are internal to the package. 32 GND Internally connected to the package base Internal ...

Page 7

NC 1 VCC2 GSM GND 4 GND 5 GSM900 OUT 6 GND Rev A11 060719 Pin Out ...

Page 8

RF3146D TX EN VRAMP GSM900 GSM900 OUT 2-498 Application Schematic VBATT 4.7 μF 15 kΩ From ...

Page 9

Evaluation Board Schematic 100 kΩ 50 Ω μstrip GSM900 From V CC1 Ω μstrip GSM900 OUT Rev A11 ...

Page 10

RF3146D Board Thickness 0.032”, Board Material FR-4, Multi-Layer 2-500 Evaluation Board Layout Board Size 2.0” x 2.0” Rev A11 060719 ...

Page 11

Overview The RF3146 is a dual-band EGSM900 and DCS1800 power amplifier module that incorporates an indirect closed loop method of power control. This simplifies the phone design by eliminating the need for the complicated control loop design. The indirect closed ...

Page 12

RF3146D Output power does not vary due to supply voltage under normal operating conditions regulating the collector voltage to the PA the voltage sensitivity is essentially eliminated. This covers most BATT cases where the PA ...

Page 13

An often overlooked problem in PA control loops is that a delay not only decreases loop stability it also affects the burst timing when, for instance the input power from the VCO decreases (or increases) with respect to temperature or ...

Page 14

RF3146D PCB Surface Finish The PCB surface finish used for RFMD’s qualification process is electroless nickel, immersion gold. Typical thickness is 3μinch to 8μinch gold over 180μinch nickel. PCB Land Pattern Recommendation PCB land patterns are based on IPC-SM-782 standards ...

Page 15

PCB Solder Mask Pattern Liquid Photo-Imageable (LPI) solder mask is recommended. The solder mask footprint will match what is shown for the PCB metal land pattern with a 2mil to 3mil expansion to accommodate solder mask registration clearance around all ...

Page 16

RF3146D 2-506 Rev A11 060719 ...

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