RD7200 Multimode Front End Reference Design

RFMD.
®
RD7200 Multimode Front End Reference Design
The RFMD RD7200 is a multimode (tri-band WCDMA +
quad-band GSM/EDGE) cellular front end reference design
that integrates all switching, filtering, and transmit power
amplifier (PA) functionality into one complete platform that can
be readily adopted by mobile device designers. The RD7200
is available in three different variants capable of supporting the
following WCDMA band combinations: 2/5, 1/8, or 1/2/5.
The WCDMA transmit section of RD7200 consists of RFMD’s
highly efficient, linear PAs from the RF720x family, the
RF1194 switch filter module (SFM), and widely implemented
third-party WCDMA duplexers. Providing additional ease of
use, a coupled output power port is also provided in each PA
of the RF720x family for the purpose of monitoring transmit
output power.
The RF7200’s GSM/EDGE section consists of the RF3161
large signal polar modulation PA and receive SAW filters, which
are integrated into the RF1194.
For ease of implementation the RD7200 layout is based on
printed circuit board (PCB) specifications typically utilized in
today’s handset designs. The layout can be easily replicated
on customer board designs and—as a result of the high level
of integration offered by RD7200—the total board area of
the tri-band WCDMA version is only 200 mm2 while the
dual-band WCDMA version occupies only 167 mm2.
RF7201/7202 Dual-band WCDMA Linear PA Modules
• Ultra-small, ultra-thin 4 x 5 x 1 mm package size
• RF7201: Band 1/8, RF7202: Band 2/5
• VBATT range: 3.0 V to 4.2 V
• High-efficiency operation, 41% for
- Band 1 (7201) at POUT = +28.0 dBm
- Band 8 (7201) at POUT = +28.5 dBm
- Band 2 (7202) at POUT = +28.5 dBm
- Band 5 (7202) at POUT = +28.0 dBm
• 3-mode power states with digital control interface
• Integrated output power coupler
• Integrated blocking and collector decoupling capacitors
RF7200 Band 1 WCDMA Linear PA Module
• Ultra-small, ultra-thin 3 x 3 x 1 mm package size
• VBATT range: 3.0 V to 4.2 V
• High-efficiency operation, 41% at POUT = +28.0 dBm
• 3-mode power states with digital control interface
• Integrated power coupler
• Integrated blocking and collector decoupling capacitors
RF1194 (SP9T) Quad-band Multimode Antenna Switch
Filter Module
• Compact footprint, 4.5 x 4.5 x 1.3 mm, 28-Pin QFN
• Integrated GSM Rx SAW filters
• Integrated GSM Tx LPFs
• Small solution size, no external DC blocking
capacitors required
• Quad-band GSM/EDGE, tri-band WCDMA applications
RF3161 Quad Band GSM/EDGE PA Module
• Ultra-small, ultra-thin 6 x 6 x 1 mm package size
• Large signal polar modulation (LSPM) EDGE compatible
• VBATT range: 3.0 V to 4.6 V
• Improved power flatness through integrated
current limiter
RF7200 Block Diagram
RF 720x SPECIFICATIONS
Maximum
Part
Output Power
Number
(dBm)
RF7200
ACLR
Peak
+/-5 MHz Power PAE
(dBc)
(%)
MPM
19 dBm PAE
(%)
LPM Idle
Current
(mA)
HPM
Gain
(dB)
MPM
Gain
(dB)
Enable /
Mode
Interface
Coupling
Factor
(dB)
Coupling
Directivity
(dB)
28
-40
41
22
15
28
18
GPIO
20
15
RF7201/02
BAND 1/2
28.5
-40
41
22
15
28
18
GPIO
20
15
RF7201/02
BAND 5/8
28
-40
41
22
15
28
18
GPIO
20
15
RF3161 SPECIFICATIONS
Maximum
Output Power
Part
GMSK
Number
(dBm)
Maximum
Power
Efficiency
(%)
8-PSK Peak
Output
Power
(dBm)
Second
Harmonic
(dBm Max)
34.5
51
32.5
-6
-11
32.0
53
31.7
-7
-11
Vramp
Group
Delay
(ns)
Vramp
Group Delay
Variation
(ns)
Power
Control
Range
(dB Min)
2.5
35
+/-12
50
2.5
35
+/-12
50
Third
Vramp Loop
Harmonic
BW
(dBm Max) (MHz Min)
RF3161
824-915 MHz
RF3161
1710-1910 MHz
RF1194 SPECIFICATIONS
Imput Power
Switch
Type
2xGSM Tx,
4xGSM Rx,
3xUMTS,
Interface
Integrated
Harmonic
Rejection
LPFs
GPIO
Yes
Insertion Loss
GSM GSM
DC
GSM GSM
LB
HB UMTS UMTS
Integrated Blocking
LB
HB UMTS Tx
Tx
Tx
Rx
Rx SAWs Capacitors (dBm) (dBm) (dBm) (dB) (dB) (dB)
(dB)
Yes
Not
Required
35
33
26
1.05
For sales or technical support, contact RFMD at 336.678.5570 or [email protected]
7628 Thorndike Rd., Greensboro, NC 27409-9421 USA • Phone 336.664.1233 • Fax 336.931.7454
This product complies with RFMD’s green packaging standards.
RFMD® is a trademark of RFMD, LLC. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2009 RFMD.
BR.RF7200 Multimode.0109.400
1.15
0.50
0.55
GSM
Second
Rx
and
(LB/
Third
HB) Harmonics IIP2
(dB)
(dBc)
(dBm)
3.0/3.2
<-78
110