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PDF RFFM5765Q Data sheet ( Hoja de datos )
| Número de pieza | RFFM5765Q | |
| Descripción | 802.11b/g/n WiFi Front End Module | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RFFM5765Q (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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RFFM5765Q
Tested in Accordance with AEC-Q100
802.11b/g/n WiFi Front End Module
Package Style: QFN, 16-pin, 3mm x 3mm x 0.5mm
16 15 14 13
Features
Integrated 2.4GHz b/g/n
Amplifier, LNA, SP3T Switch,
and Power Detector Coupler
Single Supply Voltage 3.0V to
4.8V
POUT = 19dBm, 11g, OFDM at
<4% EVM; 22dBm 11b
ACPR < -33dBc
Applications
Automotive WiFi
WiFi Direct
Automotive Diagnostics
WiFi Infotainment
2.5GHz ISM Band Solutions
Portable Battery-Powered
Equipment
Tx In 1
Vreg 2
RX Out 3
LNA_Vdd 4
5
12 N/C
2fo Filter
SP3T
11 GND
10 ANT
9 C_BT
6 78
Functional Block Diagram
Product Description
The RFFM5765Q provides a complete integrated solution in a single front end mod-
ule (FEM) for automotive WiFi applications, 802.11b/g/n, and Bluetooth® systems.
The ultra-small form factor and integrated matching greatly reduces the number of
external components and layout area in the customer application. This simplifies
the total front end solution by reducing the bill of materials, system footprint, and
manufacturing cost. The RFFM5765Q integrates a 2.4GHz power amplifier (PA), low
noise amplifier (LNA), power detector coupler for improved accuracy, and some fil-
tering for harmonic rejection. The RFFM5765Q is capable of receiving WiFi and
Bluetooth simultaneously and is tested in accordance with AEC-Q100 standard. The
device is provided in a 3mm x 3mm x 0.5mm, 16-pin package. This module meets
or exceeds the RF front end needs of IEEE 802.11b/g/n WiFi RF systems.
Ordering Information
RFFM5765QSQ
RFFM5765QSR
RFFM5765QTR7
RFFM5765QPCBA-410
Standard 25 piece bag
Standard 100 piece bag
Standard 2500 piece reel (13”)
Fully Assembled Evaluation Board with 5-piece Sample
DS121126
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. ©2012, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
1 of 15
1 page  
RFFM5765Q
Parameter
Specification
Min. Typ. Max.
Unit
Condition
Other Requirements
(continued)
Switch Control Current
2 10 A Per control line (C_BT, C_BWRX)
C_RX Current
100 150
A Over VCC, Frequency and Temperature.
Switch Control Speed
200 ns
Switch P1dB
28 dBm
ESD
Human Body Model
500
V EIA/JESD22-114A RF pins
1000
V EIA/JESD22-114A DC pins
Charge Device Model
500
V JESD22-C101C all pins
Note 1: The PA module must operate with gated bias voltage input at 1% to 99% duty cycle.
Note 3: Values to be agreed to upon characterization data review: current, gain, return loss, detector sensitivity and output power.
Note 4: The output power for channels 1 and 11 may be reduced to meet FCC restricted band requirements.
Switch Control Logic
Mode
VREG
C_RX
C_BT
Standby
LLL
WiFi Tx
HL L
WiFi Rx
LHL
WiFi Rx/BT*
LHL
BT Rx
L LH
BT Tx
L LH
*The FEM can be placed in receive WiFi and Bluetooth modes simultaneously with increased insertion loss.
C_BWRX
L
L
L
H
L
L
DS121126
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
5 of 15
5 Page 
RFFM5765Q
WiFi and Bluetooth Receive (Simultaneous Mode)
The RFFM5765Q WiFi and Bluetooth receive circuits were specifically designed to address issues of simultaneous operation.
In this mode both signals can be received at the same time when the C_BWRX (pin-5) is set high. The typical gain for each RF
path is approximately 13dB and a NF of 3dB. During simultaneous mode the active components are the LNA, the SPST switch,
and only the Rx branch of the SP3T. Refer to the logic control table for proper settings.
Simultaneous Mode Biasing Instructions
• Connect the RF input (ANT/pin-10) to a signal generator and a spectrum analyzer at the Rx (pin-3) and BT (pin-8) RF ports. A multiport VNA
may be used as well.
• Turn the LNA bias ON (pin-4) and set the voltage to 3.3V.
• Set C_RX and C_BWRX high. This turns ON the receive branch of the SP3T and the SPST switch.
• The SP3T controls for the off branches (VREG and C_BT) must be set to a logic “low” (0.2V max) or grounded. In the event that one of these
branches is left floating or in a logic “high” the performance will degrade. It is recommended to terminate unused RF Ports in 50Ω.
• Turn RF ON.
Bluetooth Mode
The RFFM5765Q Bluetooth only mode is implemented through the SP3T switch by setting C_BT “high.” Typical insertion loss is
about 1.2dB.
Bluetooth Biasing Instructions
• Connect the RF input (ANT/pin-10) to a signal generator and a spectrum analyzer at the BT RF port. A VNA may be used in place of the Sig
Gen and SA.
• Set C_BT (pin-9) “high.” This turns the Bluetooth branch of the SP3T switch ON.
• The SP3T controls for the off branches (VREG and C_RX) must be set to a logic “low” (0.2V max) or grounded. Do not leave floating.
• Terminate unused RF Ports in 50Ω.
• Turn RF ON.
Application Circuit and Layout Recommendations
The RFFM5765Q integrates the matching networks and DC blocking capacitors for all RF ports. This greatly reduces the num-
ber of external components and layout area needed to implement this FEM. Typically only a total of four external components
are required to achieve nominal performance. However, depending on board layout and the many noise signals that could
potentially couple to the RFFM5765Q, additional bypassing capacitors may be required to properly filter out unwanted signals
that might degrade performance.
The LNA bias components consist of an inductor and a decoupling capacitor. The inductor value is critical to optimize NF and
return loss at the Rx output. For best performance and trade off between critical parameters such as NF, Gain, and IP3, the
total inductance including board trace should be approximately 1.2nH. The 5.6kΩ series resistor for the Bluetooth control line
helps to prevent unwanted signal from coupling to this pin. The resistor should be place as close as possible to the package
pin. The last component needed in the application circuit is a low frequency bypass capacitor on the VCC line. In general, it is
good RF practice to have proper decoupling of supply lines to filter out noise. Occasionally, depending on the level of coupling
or parasitics of the board, a high frequency bypass capacitor must be added as well.
In order to optimize performance for both the transmit and receive paths, a good layout design must be implemented. In addi-
tion to designing 50 RF lines, proper grounding along the RF traces and on the FEM ground slug must be exercised. This will
minimize coupling and provide good thermal dissipation when the PA is operating at high power. For reference, the RFMD eval-
uation board uses 9 thermal ground vias (hole/capture pad 12/22mil) on the ground slug. Additionally, if space permitted, VCC
and control lines must be isolated from each other with ground vias in between them. RFMD evaluation board gerbers are
available upon request.
DS121126
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
11 of 15
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