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PDF RF7115 Data sheet ( Hoja de datos )
| Número de pieza | RF7115 | |
| Descripción | QUAD-BAND GSM850/GSM900/DCS/PCS TRANSMIT MODULE | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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RF7115
Features
0 QUAD-BAND GSM850/GSM900/DCS/PCS
TRANSMIT MODULE
RoHS Compliant & Pb-Free Product
• Reduced Solution Size
Integrating Antenna Switch
and Harmonic Filtering to
Decrease Time to Market
• Package 7x8x1.2mm
• IEC 61000-4-2 Compliant
• In/Output Matched to 50Ω
• DC Block on Antenna Port
• GSM850/900
POUT = 33.5 dBm
• DCS/PCS POUT=30.5dBm
• New Current Limiter
Applications
• GSM850/EGSM900/DCS/
PCS Products
• GPRS Class 12 Capable
• Power Star© Module
• 3V Quad-Band Handsets
• Portable Battery-Powered
Equipment
LB RF IN 2
VSENSE 1
B1 3
B2 4
VBATT 5
B3 6
TX EN 7
VRAMP 8
HB RF IN 9
GSM GaAs Die
Fully Integrated
Power Control Circuit
and Switch Decoder
DCS/PCS GaAs Die
pHEMT
Switch
21 ANTENNA
16 RX 4
15 RX 3
14 RX 2
13 RX 1
Product Description
Functional Block Diagram
The RF7115 is a high-power, high-efficiency transmit
module containing RFMD’s Power Star© integrated power
control, integrated pHEMT front end antenna switch and
harmonic filtering functionality. All of which combine to
provide for best in class harmonic emission control and
RX and TX insertion loss. The device is self-contained
with 50Ω input and output terminals with no matching
components required. The integrated power control func-
tion based on RFMD’s patented Power Star© control is
incorporated, eliminating the need for directional couplers,
detector diodes, power control ASIC’s, 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 portion of the transmit chain in GSM850,
EGSM900, DCS and PCS GMSK and eliminates the need
for PA to antenna switch module matching. On-board
power control provides over 70dB control range. The inte-
grated antenna switch allows true quad band TX and RX
functionality. Built-in current limiter option may be utilized
to minimize power variation in mismatch condition.
Optimum Technology Matching® Applied
Si BJT
9 GaAs HBT
GaAs MESFET
Si Bi-CMOS
9SiGe HBT
Si CMOS
InGaP/HBT
9GaAs pHEMT
GaN HEMT
SiGe Bi-CMOS
Rev A0 060808
Ordering Information
RF7115
RF7115SB
RF7115PCBA-41X
Quad-Band GSM850/GSM900/DCS/PCS Trans-
mit Module
Power Amp Module 5-Piece Sample Pack
Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
11-365
1 page  
RF7115
Parameter
DCS1800 Mode
Operating Frequency Range
Maximum Output Power
Total Efficiency
Input Power Range
Output Noise Power
Forward Isolation 1
Specification
Min.
Typ.
Max.
1710
30.0
29.8
28.0
32
2
31.0
37
4
-92
<-100
<-100
-60
1785
6
-87
-87
-84
-53
Forward Isolation 2
-20 -15
All Harmonics up to 12.75GHz
-40 -35
All Non-Harmonic Spurious
-36
Input VSWR
2.5:1
Output Load VSWR Stability
10:1
Output Load VSWR Ruggedness 20:1
Input and Output Impedance
Note: VRAMP MAX=3/8*VBATT+0.15<1.5V
50
Unit Condition
MHz
dBm
dBm
dBm
%
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Ω
Temp=+25°C, VBATT=3.5V,
VRAMP MAX, PIN=4dBm,
25% Duty Cycle, Pulse Width=1154μs
25% duty cycle, pulse width 1154us
50% duty cycle, pulse width 2308us
Temp=+85°C, VBATT=3.0V,
VRAMP= VRAMP MAX
At POUT MAX, VBATT=3.5V
Full output power guaranteed at minimum
drive level
1805MHz to 1880MHz, RBW=100kHz,
POUT >0dBm
925MHz to 935MHz, RBW=100kHz,
POUT > 0 dBm
935MHz to 960MHz, RBW=100kHz,
POUT > 0 dBm
TXEnable=Low, PIN=+6dBm,
VRAMP = 0.25 V,
B1=Low, B2=High, B3=High
TXEnable=High, PIN=+6dBm,
VRAMP = 0.25 V,
B1=Low, B2=High, B3=High
Over all power levels (0dBm to 30dBm)
Over all power levels (0dBm to 30dBm)
Over all power levels (0dBm to 30dBm)
Spurious<-36dBm, set VRAMP where
POUT<30.0dBm into 50Ω load
Set VRAMP where POUT<30.0dBm into 50Ω
load. No damage or permanent degradation
to part.
Rev A0 060808
11-369
5 Page 
RF7115
Theory of Operation
Product Description
The RF7115 is a high-power, high-efficiency, transmit module (TXM) with fully-integrated power control functionality, har-
monic filtering, band selectivity, and TX/RX switching. The TXM is self-contained, with 50Ω I/O terminals with four RX
ports allowing true quad band operation. The power control function eliminates all power control circuitry, including direc-
tional couplers, diode detectors, and power control ASIC’s, etc. The power control capability provides 50dB continuous
control range, and 70dB total control range, using a DAC-compatible, analog voltage input. The TX Enable feature pro-
vides for PA activation (TX mode) or RX mode/Stand-by. Internal switching provides a low-loss, low-distortion path from
the Antenna port to the TX path (or RX port), while maintaining proper isolation. Integrated filtering provides ETSI com-
pliant harmonic suppression at the antenna port even under high mismatch conditions, which is important as modern
antennas today often present a load that significantly deviates from nominal impedance.
Overview
The RF7115 is a true quad-band GSM850, EGSM900, DCS1800, and PCS1900 power amplifier module with fully inte-
grated power control functionality, harmonic filtering, band selectivity and TX/RX switching. This simplifies the phone
design by eliminating the need for the complicated control loop design, harmonic filters, TX/RX switch and possible
matching components between these. The power control loop can be driven directly from the DAC output in the base-
band circuit. The module has 4 Rx ports for GSM850. EGSM900, DCS1800, and PCS1900 bands of operation. For opti-
mum performance, it is best to use Rx1 and Rx2 for low band, and Rx3 and Rx4 for high band operation. Best forward
isolation can be achieved in these states during the off mode as well. To control the mode of operation, there are four
logic control signals; TX Enable, B1, B2, and B3. Refer to truth table below for mode of operations. If control signals are
limited, eliminate the use of the standby mode and B3 may remain in the high state for all modes of operation. By also
changing the don’t care state (X) of B1 allows minimum control logic switching between on and off states.
Module Control and Antenna Switch Logic
TX_EN
B1 B2
B3
0 00
0
0 00
1
0 10
x
0 01
x
0 11
x
1 x0 1
1 x1 1
TX Module Mode
Stand by mode
RX 1
RX 2
RX 3
RX 4
TX low band (GSM850/EGSM900)
TX high band (DCS1800/PCS1900)
Rev A0 060808
11-375
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet RF7115.PDF ] | |
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