RF3854TR7 RFMD, RF3854TR7 Datasheet

IC QUADRATURE MOD QUAD-BND 24QFN

RF3854TR7

Manufacturer Part Number
RF3854TR7
Description
IC QUADRATURE MOD QUAD-BND 24QFN
Manufacturer
RFMD
Datasheet

Specifications of RF3854TR7

Function
Modulator
Lo Frequency
800MHz ~ 2GHz
Rf Frequency
800MHz ~ 2GHz
P1db
7dBm
Noise Floor
-150dBm/Hz
Current - Supply
110mA
Voltage - Supply
2.7 V ~ 3.3 V
Test Frequency
2.11GHz
Package / Case
24-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Output Power
-
Other names
689-1029-2
Features
Applications
Rev A1 DS070313
W-CDMA High/Mid/Low
Power Modes
Quad-Band Direct Quadrature
Modulator
Variable Gain PA Drivers
GMSK Bypass Amplifiers
LO Frequency Doubler and
Divider
Baseband Filtering
Qualified to Infrastructure
Standards
CDMA, GSM, and UMTS Bas-
estation Architecture
ISM Transceivers
Broadband Fixed Wireless
Access and Wireless Local
Loop
GMSK, QPSK, DQPSK, QAM
Modulation
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Product Description
The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modu-
lator and PA driver solution designed for digital modulation applications
ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO
buffers are included to support a variety of LO generation options.
Dynamic power control is supported through a single analog input giving
90dB of power control range for the W-CDMA mode and 40dB of power
control in the other two modes. Three sets of RF outputs are provided:
high band and low band low noise EDGE/GMSK outputs, as well as one
wideband W-CDMA output. The device is designed for 2.7V to 3.3V opera-
tion, and is assembled in a plastic, 24-pin, 4mmx4mm QFN.
Ordering Information
RF3854
RF3854PCBA-41X
GaAs HBT
GaAs MESFET
InGaP HBT
LO HB P
LO HB N
MODE C
LO LB N
LO LB P
VCC2
Optimum Technology Matching® Applied
QUADRATURE MODULATOR AND PA DRIVER
1
2
3
4
5
6
Low Noise, Multi-Mode, Quad-Band, Quadrature Modulator
and PA Driver
Fully Assembled Evaluation Board
24
SiGe BiCMOS
Si BiCMOS
SiGe HBT
7
Note: The die flag is the
DIV
Flo
LOW NOISE, MULTI-MODE, QUAD-BAND,
x2
2
chip's main ground.
Functional Block Diagram
Mode Control
and Biasing
+45°
+45°
-45°
-45°
23
8
22
9
RoHS Compliant & Pb-Free Product
21
10
Σ
Package Style: QFN, 24-Pin, 4x4
GaAs pHEMT
Si CMOS
Si BJT
Control
Power
20
11
19
12
RF3854
18
17
16
15
14
13
RF OUT
WB P
RF OUT
WB N
RF OUT
HB P
RF OUT
HB N
RF OUT
LB P
RF OUT
LB N
GaN HEMT
1 of 26

Related parts for RF3854TR7

RF3854TR7 Summary of contents

Page 1

... RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade- mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc. ...

Page 2

... V -40 to +150 °C The information in this publication is believed to be accurate and reliable. How- ever, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, -40 to +85 °C nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent -0 ...

Page 3

... At F ±20MHz* C Relative Noise at: Maximum Gain Absolute Noise at: Maximum Gain All Gain Settings * Not tested in Production 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Specification Unit Typ. Max. 915 MHz 915 MHz ...

Page 4

... Ratio (ALCR)* Channel Spacing ±5MHz ±10MHz Error Vector Magnitude RMS* Output Noise At F ±40MHz Not tested in Production 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Specification Unit Typ. Max. 1910 MHz 1910 MHz 0.0 +3.0 dBm 1 ...

Page 5

... LB Output Compression Output P1dB* * Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Specification Unit Typ. Max. 990 ...

Page 6

... Carrier Suppression * 3rd Harmonic of Modulation Suppression at F -3x300kHz C * Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Specification Unit Typ. Max. +20 dBm -37 ...

Page 7

... Output Noise At F ±20MHz Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Specification Unit Typ. Max. -62.0 dBm -19 ...

Page 8

... LB 6xFLO LB Output Compression Output P1dB* * Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Specification Unit Typ. Max. 2.2 dBm 2 +6 ...

Page 9

... LB 6xFLO LB Output Compression Output P1dB* * Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Specification Unit Typ. Max. +20 ...

Page 10

... GMSK Output Power Output Impedance* Output Noise At F ±20MHz Not tested in Production ** Provides the same output power as modulated signal with associated crest factor. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Specification Unit Typ. Max. +20 dBm -37 ...

Page 11

... Input Impedance Note 1: In low power mode it is recommended that the IQ level be reduced to 0.4V CDMA TX power levels below -20dBm (measured at antenna). 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Specification Unit Typ. ...

Page 12

... Adjacent Channel Power Noise Floor Note 1: In low power mode it is recommended that the IQ level be reduced to 0.4V CDMA TX power levels below -20dBm (measured at antenna). 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Specification Unit Typ. ...

Page 13

... GND1 pin and the die flag ground. All connections to any other ground should be made through a ground plane. Poor routing of this GndLO signal can significantly degrade the LO leakage performance. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 /2” modes the signal (LOHBP-LOHBN) undergoes a fre- LO x1” ...

Page 14

... There is a trade-off between settling time and noise contributions by the gain control circuitry as gain control is applied. Poor positioning of the VREF decoupling capacitor can cause a degrada- tion in LO leakage. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com ...

Page 15

... The output is an open collector. The output are matched off-chip OUT Complementary differential wideband PA driver amplifier output. See pin 17 GND Ground. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 RF3854 Interface Schematic V CC2 4 k Ω Ω - 1.7 V ...

Page 16

... CMOS Logic inputs: Logic 0=0V to 0.4V; Logic 1=1. Pkg DIE FLAG Ground for LO section, modular, biasing, variable gain amplifier, and sub- strate. Base 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com 1.2V for EDGE, 0.8V ...

Page 17

... PCS1900 1850MHz 1910MHz PCS1900 1850MHz 1910MHz W-CDMA1950 1920MHz 1980MHz 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Modulation LO Port LO Frequency Range Format Lower Limit Upper Limit EDGE 8PSK LOHB 1648MHz GSM GMSK ...

Page 18

... Modulator and on-frequency LO enabled High Band Modulator and on-frequency LO enabled Low Band Modulator and on-frequency LO enabled 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Input Logic Mode A Mode B Mode C Mode D Sleep Mode Frequency Doubler/Divide by 2 Options ...

Page 19

... The location and value of the bypass capacitor on pin 1 is critical in promoting good carrier suppression and is designated to resonate out the series wire bond and PC board inductance. 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Application Information RF3854 ...

Page 20

... RF3854 0. 0.50 TYP 0. 2. 2.40 0.30 0.18 0.10 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Package Drawing -A- 1.00 4.0 0.80 -B- 4.0 0.2 C Shaded area indicates pin 1. Dimensions in mm. 0.55 TYP 0.35 ...

Page 21

... Note: The die flag is the chip's main ground 1.8 pF DIV Flo MODE MODE D Q SIG N Q SIG P 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Application Schematic MODE +45° 16 -45° Σ 15 +45° -45° 14 ...

Page 22

... Mode Control 5 and Biasing 6 MODE MODE D 50 Ω μstrip J8 Q SIG N 50 Ω μstrip J9 Q SIG P 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Evaluation Board Schematic VCC MODE A VCC 2 4 kΩ ...

Page 23

... Board Thickness 0.032”, Board Material FR-4, Multi-Layer Assembly Mid 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A1 DS070313 Evaluation Board Layout Board Size 2.250” x 2.250” RF3854 Top Back ...

Page 24

... RF3854 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 when possible. The pad pattern shown has been developed and tested for optimized assembly at RFMD ...

Page 25

... The via pattern used for the RFMD qualification is based on thru-hole vias with 0.203mm to 0.330mm finished hole size on a 0.5mm to 1.2mm grid pattern with 0.025mm plating on via walls. If micro vias are used in a design suggested that the quantity of vias be increased by a 4:1 ratio to achieve similar results. 7628 Thorndike Road, Greensboro, NC 27409-9421 · ...

Page 26

... RF3854 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com Rev A1 DS070313 ...

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