RFMD Datasheet Template

RFFM8528
RFFM8528
WiFi Front End Module
5180MHz to 5825MHz
Package: QFN, 16-pin,
2.3mm x 2.3mm x 0.33mm max
The RFFM8528 provides a complete integrated solution in a single front
end module (FEM) for WiFi 802.11a/n/ac systems. The next generation
ultra-small factor and integrated matching minimizes layout area in the
customer’s application, reduces the bill of materials and greatly reduces
the number of external components. Performance is focused on a
balance of efficiency to enable long battery life and linear power that
increases the range of connection. The RFFM8528 integrates a 5GHz
power amplifier (PA), single pole double throw switch (SP2T), LNA with
bypass, and a power detector coupler for improved accuracy. The
device is provided in a 2.3mm x 2.3mm x 0.33mm, 16-pin QFN package.
LNA_EN NC
16
15
GND
ANT
14
13
GND
1
12 GND
RX
2
11 VCC
GND
3
10 VCC
VCC
4
9
5
7
6
PDET PA_EN GND
VMODE
Features
■
POUT = +17.5dBm, 802.11ac,
80MHz MCS9 at 1.8% (-35dB)
Dynamic EVM
■
High efficiency
■
Input and Output Matched to 50Ω
■
Integrated 5GHz PA, SP2T, LNA
with Bypass and PDET
■
Supports low power mode for
increased efficiency operation
■
Optional logic schemes for control
■
Low Height Package, Suited for
SiP and CoB designs
Applications
■
Smartphones
■
Tablets
■
Netbooks/Notebooks
■
Mobile Devices
■
Automotive
8
TX
Functional Block Diagram
Ordering Information
RFFM8528SB
Standard 5-piece bag
RFFM8528SQ
Standard 25-piece bag
RFFM8528SR
Standard 100-piece reel
RFFM8528TR7
Standard 2500-piece reel
RFFM8528TR7-5K
Standard 5000-piece reel
RFFM8528PCK-410
Fully assembled evaluation board w/ 5-piece bag
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].
®
DS140731
®
RF MICRO DEVICES and RFMD are trademarks of RFMD, LLC. BLUETOOTH is a trademark 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. ©2013, RF Micro Devices, Inc.
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RFFM8528
Absolute Maximum Ratings
Parameter
Rating
Unit
PA Enable Voltage
-0.5 to +6.0
-0.5 to 5
VDC
VDC
DC Supply Current
500
mA
-40 to +150
ºC
Maximum TX Input Power into 50Ω Load for 11a/n (No Damage)
+12
dBm
LNA On Maximum RX input power (No damage)
+12
dBm
+25
dBm
DC Supply Voltage (No RF Applied)
Storage Temperature
Bypass Mode Maximum RX input power (No damage)
Moisture Sensitivity
Caution! ESD sensitive device.
RFMD Green: RoHS status based on EU
Directive 2011/65/EU (at time of this
document revision), halogen free per IEC
61249-2-21, < 1000ppm each of
antimony trioxide in polymeric materials
and red phosphorus as a flame retardant,
and <2% antimony in solder.
Exceeding any one or a combination of the Absolute
Maximum Rating conditions may cause permanent
damage to the device. Extended application of Absolute
Maximum Rating conditions to the device may reduce
device reliability. Specified typical performance or
functional operation of the device under Absolute
Maximum Rating conditions is not implied.
MSL2
Nominal Operating Parameters
Specification
Parameter
Unit
Min
Typ
Condition
Max
Compliance
802.11a, 802.11n, 802.11ac
Operating Frequency
5.18
5.825
GHz
Extended Frequency
4.9
5.925
GHz
Operating Temperature
-20
25
+65
ºC
Extended Operating Temperature
-40
25
+85
ºC
Power Supply VCC
3.0
3.3
3.6
V
Extended VCC
3.0
4.2
V
Functional with reduced performance
Control Voltage-High
2.8
2.95
VCC
V
For PA_EN, LNA_EN, VMODE
0
0.2
V
For PA_EN, LNA_EN, VMODE
Control Voltage-Low
Transmit (TX-ANT) High Power
Mode
Gain flatness Across Any 80MHz Channel
Functional with reduced performance
VCC=3.3V; PA_EN = High; LNA_EN = Low;
VMODE = Low; T=+25ºC; Unless otherwise noted
Small Signal Gain (5.18 to 5.85GHz)
Gain Flatness Across the Band
Functional with reduced performance
28
dB
-1
1
-0.5
0.5
20MHz Output Power*
11n 20MHz Dynamic EVM
80MHz Output Power*
11ac 80MHz Dynamic EVM
dB
dB
19
dBm
2.5
%
-32
dB
17.5
dBm
1.8
%
-35
dB
802.11n HT20 MCS7
802.11ac VHT80 MCS9
TX Port Return Loss
12
18
dB
ANT Port Return Loss
14
20
dB
802.11a 6Mbps Operating Current
328
mA
POUT = +22dBm
20MHz 802.11n Operating Current
250
mA
POUT = +19dBm
80MHz 802.11ac Operating Current
225
mA
POUT = +17.5dBm
Second Harmonic
-33
dBm/MHz
Third Harmonic
-33
dBm/MHz
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].
Fundamental frequency is between 4900 and 5850MHz; RF
POUT = +22dBm. Measured in 1MHz resolution bandwidth
(FCC limit max = -30dBm)
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Specification
Parameter
Unit
Min
Typ
Condition
Max
Transmit (TX-ANT) High Power
Mode (continued)
VCC=3.3V; PA_EN = High; LNA_EN = Low;
VMODE = Low; T=+25ºC; Unless otherwise noted
Margin to 20Mhz Spectral Mask*
2
dBc
802.11n HT20 at POUT = +20dBm
Margin to 80MHz Spectral Mask*
2
dBc
802.11ac VHT80 at POUT = +20dBm
Power Detector Voltage
0.8
1.05
V
Variation Across Band
-0.5
0.5
dB
Variation Over Temperature
-1.5
1.5
dB
Transmit (TX-ANT) Low Power
Mode
VCC=3.3V; PA_EN = High; LNA_EN = Low;
VMODE = High; T=+25ºC; Unless otherwise noted
20MHz Output Power*
9
11n 20MHz Dynamic EVM
80MHz Output Power*
POUT = +17.5dBm
9
dBm
1
%
-40
dB
10
dBm
802.11n HT20 MCS7
1.2
%
-38.5
dB
20 MHz 802.11n Current
145
mA
POUT = +9dBm
80 MHz 802.11ac Current
145
mA
POUT = +9dBm
11ac 80MHz Dynamic EVM
802.11ac VHT80 MCS9
VCC=3.3V; PA_EN = Low; LNA_EN = High;
VMODE = Low; T=+25ºC; Unless otherwise noted
Receive (ANT-RX) LNA On
Gain
11
Gain Flatness Across Band
-1
13
15
dB
1
dB
3
dB
Noise Figure
2.5
Rx Port Return Loss
12
ANT Port Return Loss
8
dB
RX Current
10
mA
Input P1dB
-4
dBm
dB
VCC=3.3V; PA_EN = Low; LNA_EN = Low;
VMODE = Low; T=+25ºC; Unless otherwise noted
Receive (ANT-RX) Bypass Mode
Bypass Loss
2
Gain Flatness Across Band
-1
3
4.5
dB
1
dB
RX Port Return Loss
7
dB
ANT Port Return Loss
11
dB
ANT to RX Isolation
38
dB
TX to RX Isolation
25
dB
PA_EN Current
250
uA
General Specifications
LNA_EN current
Leakage Current
83
0.1
Switch in TX Mode
uA
2
5
uA
Switch Control Current – High
5
100
uA
Switch Control Current – Low
0.5
2
uA
Switching Speed
100
200
nS
ESD – Human Body Model
1000
ESD – Charge Device Model
1000
PA Turn-on Time from PA_EN edge
150
VCC=3.3V, No RF applied, PA_EN=LNA_EN=VMODE=Low
Per line
V
V
200
nS
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].
10% to 90% of final gain
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Specification
Parameter
Unit
Min
Typ
Condition
Max
General Specifications
PA Turn-off Time from PA_EN edge
Ruggedness
150
200
nS
10:1
VSWR
90% to 10% of final gain
At typical operating conditions
*For 4900MHz to 5150MHz, POUT is reduced by 1dB
Switch Control Logic Truth Table
PA_EN
LNA_EN
VMODE
Standby
Low
Low
Low
802.11a/n/ac TX High Power Mode
High
Low
Low
802.11a/n/ac TX Low Power Mode
High
Low
High
802.11a/n/ac TX Low Power Mode (Optional)
High
High
Low
802.11a/n/ac RX Gain
Low
High
Low
802.11a/n/ac RX Bypass
Low
Low
Low
Operating Mode
Note:
1.
2.
TX Low Power Mode is enabled either internally or with an option for external VMODE.
High = 2.8V to VCC, Low = 0V to 0.2V.
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Evaluation Board Schematic
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Timing Diagram
RFFM8528 Transmit Timing Diagram
Power ON / OFF Sequence
VCC
PA_EN
Range is set Per the data sheet
Apply 3.3v to pins
4, 10, and 11
Level is set Per the data sheet
For Transmit: apply
2.9v to pin 6
RF signal ON time is
0.5uS max. Set RF
input to required level.
LNA_EN
LNA_EN is Low during TX
Both controls must be
OFF during transmit.
The order is not critical.
Apply a max of 0.2V to
pins 9 and 16
VMODE
VMODE is Low during TX
Time
0.2uSec
0.2uSec
0.2uSec
0.2uSec
Note:
1. RF Signal for each specific mode is applied after the DC bias is applied
2. Total ON/OFF time includes from 10% of control switching to 90% of RF power
3. Listed values on diagram are typical. The maximum is 0.5us for each mode
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Timing Sequence Notes:
802.11a/n/ac Transmit Biasing Instructions
1. Connect the FEM to a signal generator at the input and a spectrum analyzer at the output. Terminate
unused ports with 50 Ohms.
2. Set the power supply voltage to 3.3V first with PA_EN ≤ 0.2V. Leakage current will be <5uA typical.
3. Refer to switch operational truth table to set the control lines at the proper levels for WiFi TX. All OFF
voltages must be ≤ 0.2V (cannot be floating).
4. Turn on PA_EN with levels indicated in the datasheet. PA_EN controls the current drawn by the
802.11a/n/ac power amplifier and the current should quickly rise to ~160mA +/- 20mA for a typical part but
the actual operating current will be based on the output power desired. Be extremely careful not to exceed
5.0V on the PA_EN pin or the part may exceed device current limits.
802.11a/n/ac Transmit Turn On Sequence (See Transmit Timing Diagram)
1. Turn ON power supply.
2. Turn ON PA_EN.
3. Apply RF.
802.11a/n/ac Transmit Turn Off Sequence
1. Turn OFF RF.
2. Turn OFF PA_EN.
3. Turn OFF power supply.
802.11a/n/ac Receive
1. To receive WiFi set the switch control lines per the truth table.
2. Antenna port is input and RX port is output for this test.
3. Follow Timing Diagram for biasing instructions.
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Pin Out
LNA_EN NC
16
15
GND
ANT
14
13
GND
1
12 GND
RX
2
11 VCC
GND
3
10 VCC
VCC
4
9
5
6
7
PDET PA_EN GND
VMODE
8
TX
Package Outline (Dimensions in millimeters)
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
PCB Patterns
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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RFFM8528
Pin Names and Descriptions
Pin
Name
Description
1
GND
2
RX
3
GND
Ground connection. This pin is not connected internally and can be left floating or connected to ground.
4
VCC
Supply voltage for the LNA and PA Regulator. See applications schematic for biasing and bypassing
components.
5
PDET
Power Detector voltage for the TX path. May need external series R/shunt C to adjust voltage level and to
filter RF noise.
6
PA_EN
Control voltage for the PA and TX switch. Optional method to enact Low Power Mode when placed in High
state at same time with LNA_EN in High state. See truth table for proper voltage settings.
7
GND
8
TX
9
VMODE
10
VCC
Supply voltage for the 1st and 2nd stage of the PA. See applications schematic for biasing and bypassing
components.
11
VCC
Supply voltage for the final stage of the PA. See applications schematic for biasing and bypassing
components.
12
GND
Ground connection. This pin is not connected internally and can be left floating or connected to ground.
13
ANT
RF bidirectional antenna port matched to 50Ω. An external DC block is required.
14
GND
Ground connection. This pin is not connected internally and can be left floating or connected to ground.
15
NC
16
LNA_EN
Control voltage for the LNA. When this pin is set to a Low logic state, the Bypass Mode is enabled. Optional
method to enact Low Power Mode when placed in High state at same time with PA_EN in High state. See
truth table for proper voltage settings.
Pkg Base
GND
Ground connection. The backside of the package should be connected to the ground plane through a short
path, i.e., PCB vias under the device are recommended.
Ground connection. This pin is not connected internally and can be left floating or connected to ground.
RF output port for the 802.11a/n/ac LNA. This port is matched to 50Ω and DC blocked internally.
Ground connection. This pin is not connected internally and can be left floating or connected to ground.
RF input port for the 802.11a/n/ac PA. This port is matched to 50Ω and DC blocked internally.
High/Low Power mode control signal. VMODE can be low or left floating for nominal conditions (High Power
Mode.) Applying 2.8V or greater to this pin enables Low Power Mode
No Connect. This pin is not connected internally. It can be left floating or connected to ground.
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].
DS140731
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, 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 or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
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