rf3858 RF Micro Devices, rf3858 Datasheet

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rf3858

Manufacturer Part Number
rf3858
Description
Ism Band Transmit/receive Module With Diversity Transfer Switch
Manufacturer
RF Micro Devices
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
RF3858
Manufacturer:
RFMD
Quantity:
9 145
Part Number:
rf3858CC1101-410
Manufacturer:
RFMD
Quantity:
5 000
Part Number:
rf3858PCK-410
Manufacturer:
RFMD
Quantity:
5 000
Part Number:
rf3858SB
Manufacturer:
RFMD
Quantity:
5 000
Part Number:
rf3858SR
Manufacturer:
RFMD
Quantity:
5 000
Features
Applications
DS100525
Integrated LNA, PA, and Transfer
Switch
Small Form Factor
8.0mmx8.0mmx1.2mm
50 Inputs and Outputs
Low Insertion Loss, High
Isolation Transfer Switch
31.5dBm PA Output Power
Low PA Harmonic Content
900MHz ISM Band Application
Single Chip RF Front End Module
Portable Battery Powered
Equipment
Wireless Automatic Metering
Applications
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.
RF3858ISM
Band Trans-
mit/Receive
Module with
Diversity
Transfer
Switch
Product Description
The RF3858 is a single-chip front-end module (FEM) for applications in the
900MHz ISM Band. The RF3858 addresses the need for aggressive size
reduction for typical portable equipment RF front-end design and greatly
reduces the number of components outside of the core chipset thus mini-
mizing the footprint and assembly cost of the overall solution. The
RF3858 contains an integrated 1 Watt PA, TX/RX transfer switch, LNA with
bypass mode, and matching components. The RF3858 is packaged in a
32-pin, 8.0mmx8.0mmx1.2mm overmolded laminate package with
backside ground which greatly minimizes next level board space and
allows for simplified integration.
GaAs HBT
GaAs MESFET
InGaP HBT
RX SWITCH
TX SWITCH
LNA VREF
PA VCC2
LNA IN
LNA SEL
PA OUT
GND
GND
GND
Optimum Technology Matching® Applied
10
1
2
3
4
5
6
7
8
9
SiGe BiCMOS
Si BiCMOS
SiGe HBT
32
11
ISM BAND TRANSMIT/RECEIVE MODULE
Match
Input
Functional Block Diagram
WITH DIVERSITY TRANSFER SWITCH
31
12
HBT
LNA
30
Output
13
Match
Output
Match
pHEMT RF
Switch
29
14
GaAs pHEMT
Si CMOS
Si BJT
HBT
PA
28
15
Match
Input
27
16
Package: 32-Pin, 8x8
RF3858
26
25
24
23
22
21
20
19
18
17
GaN HEMT
BiFET HBT
LDMOS
PA VCC1
ANT1
ANT2
VRX2
VRX1
VTX1
VTX2
PA IN
GND
GND
1 of 9

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rf3858 Summary of contents

Page 1

... The RF3858 contains an integrated 1 Watt PA, TX/RX transfer switch, LNA with bypass mode, and matching components. The RF3858 is packaged in a 32-pin, 8.0mmx8.0mmx1.2mm overmolded laminate package with backside ground which greatly minimizes next level board space and allows for simplified integration ...

Page 2

... RF3858 Absolute Maximum Ratings Parameter Overall DC Supply Voltage Operating Ambient Temperature Storage Temperature Low Noise Amplifier DC Supply Current Input RF Power Power Amplifier DC Supply Current Input RF Power Transmit/Receive Switch Input RF Power Parameter Min. Low Noise Amplifier Frequency Range 902 High Gain Mode ...

Page 3

... ANT2 ANT1 RF3858 Condition 31.5dBm output, 4.0V, 2.85V V REG All phase angles All phase angles, -40°C 31.5dBm output, 4.0V, 2.85V V REG Idle current input Over V , Frequency, and Temperature CC Active ports only VTX2, VRX1, and VRX2 VTX1 Settle to 0 ...

Page 4

... RF3858 Pin Function Description 1 LNA IN RF Input to the low noise amplifier, 50 nominal impedance. 2 LNA VREF Voltage to set the bias level to the LNA, 3.0V nominal, can be used to shut the LNA off or to adjust the quiescent current. 3 LNA SELECT A logic low selects the high gain mode of the LNA, logic high selects the low gain mode. ...

Page 5

... All units in um. Pin A=510x475 Pin B=510x510 Pin C=475x510 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS100525 Package Drawing Pin Out RF3858 ...

Page 6

... RF3858 LNA In 50 Ohm ustrip 1 LNA Vref 2 LNA Sel 3 RX Switch 50 Ohm ustrip 4 50 Ohm ustrip 5 TX Switch 6 PA Vcc2 7 10uF .1uF 68 pF C11 C10 Ohm ustrip 10 PA Out 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 7

... Gain (dB - RF3858 LNA Gain versus Frequency (High Gain Mode) Over Temperature LNA V and LNA V =3.3V; LNA Sel=Low CC REF - Frequency (MHz) LNA IIP3 Vs Frequency (Low Gain Mode) (Over Temperature) LNA VCC & LNA Vref = 3.3V; LNA Sel = High ...

Page 8

... RF3858 Gain versus Output Power (Over 915MHz) REG V =4. Gain (dB Output Power Power Amplfier Operating Current versus Output Power (Over V at 915MHz 2.85V REG 0.8 0.7 0.6 0.5 Operating Current 0.4 (mA) 0.3 0.2 0.1 0 Output Power (dBm) ...

Page 9

... RF3858 ISM Band Transmit/Receive Module with Diversity Transfer Switch RF3858PCK-410 Fully Assembled Evaluation Board and 5 Loose Pieces 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS100525 Ordering Information RF3858 ...

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