RF6539
RF65393.3V
to
4.0V,915MHz
Transmit/Receive
Module
3.3V TO 4.0V,915MHz Transmit/Receive
Module
GND
Features
GND
VCC
GND
VREG
GND
23
1
22
GND
21
GND
20
GND
GND
4
19
GND
ANT2
5
18
TX
GND
6
17
GND
ANT1
7
16
RX
GND
8
15
GND

Wireless Automated Metering

Wireless Alarm Systems
9
Portable Battery Powered
Equipment
Smart Energy
868MHz/900MHz ISM Band
Application
Single Chip RF Front End Module
10
11
TXRX_SEL
Applications
12
13
14
GND
Separate 50 Tx/Rx Transceiver
Interface
GND
3
GND
GND
Antenna Diversity Switch

24
Tx Output Power: 22dBm


25
2
Rx Insertion Loss: 1dB

26
GND


27
VCC

28
ANT_SEL

GND
Package: LGA, 28-Pin, 5.5mm x 5.0mm
Functional Block Diagram
Product Description
This module is intended for 915MHz AMR solutions. It provides separate ports for
Rx and Tx paths and two ports on the output for connecting a diversity solution or a
test port. The PA section provides a nominal output power of 22dBm. The device is
provided in a 5.5mm x 5.0mm, 28-pin package.
Ordering Information
RF6539
RF6539SR
RF6539TR7
RF6539PCBK-410
Standard 25 piece bag
Standard 100 piece reel
Standard 2500 piece reel
Fully Assembled Evaluation Board and 5 loose sample pieces
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ 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. ©2006, RF Micro Devices, Inc.
DS130110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
1 of 9
RF6539
Absolute Maximum Ratings
Parameter
Rating
Unit
Battery Voltage
5
V
RF Port Impedance
50

Operating Temperature
-30 to 70
°C
Storage Temperature
-40 to 85
°C
ESD, HBM (RF pins)
500
V
ESD, HBM (All pins)
500
V
ESD, CDN (RF pins)
500
V
500
V
ESD, CDM (all pins)
MSL
Caution! ESD sensitive device.
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.
The information in this publication is believed to be accurate and reliable. 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.
RoHS (Restriction of Hazardous Substances): Compliant per EU Directive
2002/95/EC.
MSL 3
Maximum Input Power to PA
+10
Parameter
Min.
dBm
Specification
Typ.
Max.
Unit
Condition
VCC = 3.6V, TXRX_SEL = HIGH, ANT_SEL =
HIGH or LOW, VREG = 3.4V
Power Amplifier
Frequency Range
868
902 to 928
MHz
CW Output Power
21
22
dBm
16.5
dB
Small Signal Gain
Thermal Resistance
39.5
°C/W
Near Saturation
3.6V VCC, 3.4V VREG, 21dBm POUT, TREF = 85°C
Output Harmonic Levels
2nd
-30
dBc
3rd through 10th
-63
dBc
10
dBc
Input Return Loss
Power Supply Voltage
VCC
3.3
3.6
4
V
VREG
3.1
3.4
3.8
V
Operating VCC
100
120
mA
Operating VREG
3
4
mA
24
30
mA
VREG = VCC - 0.2V
Current
Tx Idle Current
2 of 9
VCC = 3.6V, POUT = 22dBm
VCC = 3.6V, VREG = 3.4V, ANT_SEL = TXRX_SEL
= 3.4V at POUT = 0dBm
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS130110
RF6539
Parameter
Min.
Specification
Typ.
Max.
Unit
Condition
VCC = 3.6V, TXRX_SEL = LOW, ANT_SEL = HIGH
or LOW, VREG = LOW
Rx Path
Frequency Range
868
902 to 928
Insertion Loss
1
MHz
1.3
18
dB
Input IP3
12
Input Return Loss
10
dBm
dB
Output Return Loss
10
dB
Current
ANT1
50
A
ANT_SEL = HIGH, VREG = Low, TXRX_Sel = Low
Power Down Mode, ANT2
1.7
A
ANT_SEL = LOW, VREG = Low, TXRX_Sel = Low
dB
Any used port to any unused port
Antenna Switch and Logic
Isolation
20
Logic Voltage High
3.1
Logic Voltage Low
0
3.4
Logic Current, High
Operating Mode
85
3.8
V
All Logic I/O’s, VCC - 0.2V
0.2
V
All Logic I/O’s
120
A
All Logic I/O’s
Module Logic Truth Table
ANT_SEL
TxRx_SEL
Tx - ANT1
HIGH
HIGH
Tx - ANT2
LOW
HIGH
Rx - ANT1
HIGH
LOW
Rx - ANT2
LOW
LOW
NOTE:
*Switch Control Logic High = Min 3.1V to Max 3.8V
*Switch Control Logic Low = Min 0.0V to Max 0.2V
DS130110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
3 of 9
RF6539
Pin Names and Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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Name
GND
GND
GND
GND
ANT2
GND
ANT1
GND
ANT_SEL
VCC
TXRX_SEL
GND
GND
GND
GND
RX
GND
TX
GND
GND
GND
GND
VCC
VREG
GND
GND
GND
GND
GND
Description
Ground
Ground
Ground
Ground
Antenna 2 Output/Input
Ground
Antenna 1 Output/Input
Ground
Antenna Selection Control Line
Diversity Switch Supply Voltage
Transmit or Receive Selection Control Lone
Ground
Ground
Ground
Ground
Receive Port
Ground
Transmit Port
Ground
Ground
Ground
Ground
Power Amplifier Supply Voltage
Power Amplifier Supply Voltage
Ground
Ground
Ground
Ground
Center Ground Flag
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS130110
RF6539
Package Drawing
All units in m.
DS130110
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
5 of 9
RF6539
6 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS130110
RF6539
DS130110
GND
GND
GND
GND
VREG
VCC
Pin Out
28
27
26
25
24
23
GND
1
22 GND
GND
2
21 GND
GND
3
20 GND
GND
4
19 GND
ANT2
5
18
GND
6
17 GND
ANT1
7
16
GND
8
TX
RX
10
11
12
13
14
ANT_SEL
VCC
TXRX_SEL
GND
GND
GND
15 GND
9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
7 of 9
RF6539
Evaluation Board Schematic
VCC
1µF
VREG
220pF
28
27
26
25
24
23
22
1
21
2
20
3
ANT2
5O Ohms
ANT1
5O Ohms
4
1
9
5
1
8
6
1
7
7
1
6
8
15
9
10
11
12
13
TX
5O Ohms
RX
5O Ohms
14
ANT_SEL
TXRX_SEL
1.0µF
180pF
VCC
8 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS130110
RF6539
Performance Plots
PA Gain(dB) Vs Pout(dBm)
VCC = 3.6V, VREG = 3.4V,
Freq= 868, 902, 915 & 928 MHz, Temp = 25C
32
32
27
27
22
22
17
-30 °C
12
25 °C
Gain(dB)
Gain(dB)
PA Gain(dB) Vs Pout(dBm)
VCC = 3.6V, VREG = 3.4V,
Freq= 915 MHz, Temp = -30, 25 & 70C
70 °C
7
17
868 MHz
902 MHz
12
915 MHz
928 MHz
7
2
2
-3
-3
-1
4
9
14
19
24
-1
4
9
Pout(dBm)
19
24
Pin(dBm) Vs Pout(dBm)
VCC = 3.6V, VREG = 3.4V,
Freq= 868, 902, 915 & 928 MHz, Temp = 25C
140
15
120
10
100
5
80
-30 °C
60
25 °C
Pin(dBm)
Icc(mA)
Icc(mA) Vs Pout(dBm)
VCC = 3.6V, VREG = 3.4V,
Freq= 915 MHz, Temp = -30, 25 & 70C
70 °C
40
0
868 MHz
902 MHz
-5
915 MHz
928 MHz
-10
20
-15
0
-20
-5
0
5
10
15
20
25
-5
30
0
5
Po(dBm)
10
15
20
25
30
Pout(dBm)
Pin(dBm) Vs Pout(dBm)
VCC = 3.6V, VREG = 3.4V, Freq= 915 MHz,
Temp = -30, 25 & 70C
RX Inseron Loss(dB) Vs. Frequencey(MHz)
Vcc = 3.6V, Vreg = 0.2V
-0.8
15
-0.85
10
-0.9
0
-30 °C
-5
25 °C
70 °C
-10
Gain(dB)
5
Pi(dBm)
14
Pout(dBm)
-0.95
-30 °C
-1
25 °C
70 °C
-1.05
-1.1
-15
-1.15
-20
-5
0
5
10
15
Pout(dBm)
DS130110
20
25
30
-1.2
895
900
905
910
915
920
925
930
F(MHz)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
9 of 9