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50Ω SE-In – 100Ω DIFF-Out
Amplifier 1.4GHz to 3.2GHz
F1129LB
Datasheet
Description
The F1129LB is a single-ended input / differential output 1.4GHz to
3.2GHz high gain RF amplifier. The combination of impedance
translation, high gain, high linearity, and low noise performance
makes this device an ideal amplifier for a variety of receiver
applications.
The F1129LB has been optimized to operate with a single 5V
power supply and a nominal 61mA of ICC. When operated at
2.5GHz, the device provides 20dB typical gain with 1.6dB noise
figure and +36dBm OIP3.
The F1129LB is pin-compatible with Renesas’ F1129xx family of
RF amplifiers, offering additional frequency and output impedance
options. Each F1129 variant is packaged in a 2 × 2 mm, 12-DFN,
with a 50Ω single-ended RF input and 50Ω or 100Ω differential RF
output impedances for ease of integration in the signal path.
F1129xx Base
Part Number
F1129LA
F1129LB
F1129MA
F1129MB
F1129HA
F1129HB
Differential Output Frequency Frequency
Impedance
Band
Coverage
50Ω
100Ω
Low
1.4GHz to
3.2GHz
50Ω
100Ω
Mid
2.4GHz to
4.2GHz
50Ω
100Ω
High
4.0GHz to
6.0GHz
Competitive Advantage
High gain
Excellent gain flatness over frequency
Near-constant gain versus temperature
Typical Applications
5G / Massive MIMO base stations
4G TDD and FDD base stations
2G/3G base stations
Repeaters and DAS
Point-to-point infrastructure
Public-safety infrastructure
Military handhelds
Features
RF range: 1.4GHz to 3.2GHz
Gain = 20dB typical at 2.5GHz
Noise figure = 1.6dB typical at 2.5GHz
OIP3 = +36dBm typical at 2.5GHz
Output P1dB = +20.5dBm typical at 2.5GHz
Gain variation over temperature = ±0.2dB typical
50Ω single-ended input impedance
100Ω differential output impedance
3.3V or 5V power supply
ICC = 61mA at 5V
1.4mA standby current
1.8V and 3.3V logic support for STBY control
Operating temperature (TEP) range: -40°C to +115°C
2 × 2 mm 12-DFN package
Block Diagram
Figure 1. F1129LB Block Diagram
RF_IN
F1129LB
RF_OUT +
RF_OUT -
Bias
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F1129LB Datasheet
Contents
Pin Descriptions.....................................................................................................................................................................................................4
Absolute Maximum Ratings...................................................................................................................................................................................5
Recommended Operating Conditions ...................................................................................................................................................................5
Electrical Characteristics – 5V Supply...................................................................................................................................................................6
Electrical Characteristics – 3.3V Supply................................................................................................................................................................9
Thermal Characteristics.......................................................................................................................................................................................12
Typical Operating Conditions (TOC) ...................................................................................................................................................................12
Typical Performance Characteristics – 5V...........................................................................................................................................................13
Typical Performance Characteristics – 3.3V........................................................................................................................................................15
Evaluation Kit Picture ..........................................................................................................................................................................................17
Evaluation Kit Circuit ...........................................................................................................................................................................................18
Application Information........................................................................................................................................................................................19
Power Supplies...........................................................................................................................................................................................19
Package Outline Drawings ..................................................................................................................................................................................20
Marking Diagram .................................................................................................................................................................................................20
Ordering Information............................................................................................................................................................................................20
Revision History...................................................................................................................................................................................................20
List of Figures
Figure 1. F1129LB Block Diagram......................................................................................................................................................................1
Figure 2. Pin Assignments for 2 × 2 × 0.75 mm 12-DFN Package – Top View ..................................................................................................4
Figure 3. Gain...................................................................................................................................................................................................13
Figure 4. Reverse Isolation...............................................................................................................................................................................13
Figure 5. Input Return Loss ..............................................................................................................................................................................13
Figure 6. Output Return Loss ...........................................................................................................................................................................13
Figure 7. Output IP3 .........................................................................................................................................................................................13
Figure 8. Output P1dB......................................................................................................................................................................................13
Figure 9. Noise Figure ......................................................................................................................................................................................14
Figure 10. Gain Imbalance .................................................................................................................................................................................14
Figure 11. Phase Imbalance...............................................................................................................................................................................14
Figure 12. CMR ..................................................................................................................................................................................................14
Figure 13. Gain...................................................................................................................................................................................................15
Figure 14. Reverse Isolation...............................................................................................................................................................................15
Figure 15. Input Return Loss ..............................................................................................................................................................................15
Figure 16. Output Return Loss ...........................................................................................................................................................................15
Figure 17. Output IP3 .........................................................................................................................................................................................15
Figure 18. Output P1dB......................................................................................................................................................................................15
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F1129LB Datasheet
Figure 19. Noise Figure ......................................................................................................................................................................................16
Figure 20. Gain Imbalance .................................................................................................................................................................................16
Figure 21. Phase Imbalance...............................................................................................................................................................................16
Figure 22. CMR ..................................................................................................................................................................................................16
Figure 23. Evaluation Kit – Top View..................................................................................................................................................................17
Figure 24. Evaluation Kit – Bottom View ............................................................................................................................................................17
Figure 25. Evaluation Kit Electrical Schematic ...................................................................................................................................................18
Figure 26. Control Pin Interface Schematic ........................................................................................................................................................19
List of Tables
Table 1. Pin Descriptions...................................................................................................................................................................................4
Table 2. Absolute Maximum Ratings.................................................................................................................................................................5
Table 3. Recommended Operating Conditions .................................................................................................................................................5
Table 4. Electrical Characteristics with a 5V Supply..........................................................................................................................................6
Table 5. Electrical Characteristics with a 3.3V Supply.......................................................................................................................................9
Table 6. Package Thermal Characteristics......................................................................................................................................................12
Table 7. Evaluation Kit Bill of Material (BOM) .................................................................................................................................................18
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Pin Assignments
Figure 2. Pin Assignments for 2 × 2 × 0.75 mm 12-DFN Package – Top View
F1129LB Datasheet
NC 1
RF_IN 2
NC 3
NC 4
10 NC
9 RF_OUT-
8 RF_OUT+
EP
7 NC
Pin Descriptions
Table 1. Pin Descriptions
Number
1, 3, 4, 5, 7, 10
2
6
8
9
11
12
Name
NC
RF_IN
STBY
RF_OUT+
RF_OUT-
VCC_1
VCC_2
EPAD
Description
No internal connection. It is highly recommended that these pins be connected to a ground via that is
located as close to each pin as possible.
Single-ended RF input. An external DC block is required.
Standby. If this pin is not connected or is logic LOW, the F1129LB will operate under its normal operating
condition. Apply a logic HIGH for STBY.
Differential RF output +. Internally tied to ground. Recommendation: Use an external DC block to prevent
shorting of any DC voltage that may be present on the following RF stage.
Differential RF output -. Internally tied to ground. Recommendation: Use an external DC block to prevent
shorting of any DC voltage that may be present on the following RF stage.
Connect to the supply voltage via a choke. An external bypass capacitor must be placed as close to the pin
as possible.
Connect to VCC. An external bypass capacitor must be placed as close to the pin as possible.
Exposed paddle. Internally connected to ground. Solder this exposed paddle to a printed circuit board (PCB)
pad that uses multiple ground vias to provide heat transfer out of the F1129LB into the PCB ground planes.
These multiple ground vias are also required to achieve the specified RF performance.
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F1129LB Datasheet
Absolute Maximum Ratings
The absolute maximum ratings are stress ratings only. Stresses greater than those listed below can cause permanent damage to the device.
Functional operation of the F1129LB at absolute maximum ratings is not implied. Exposure to absolute maximum rating conditions might affect
device reliability.
Table 2. Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
VCC_1, VCC_2 to GND
VCC -0.3
+5.5
STBY
VSTBY
-0.3
Lower of (5V,
VCC + 0.25V)
RF Input Power applied for 24 Hours maximum
(VCC applied, f = 2.5GHz, TEP = +115°C, and input /output VSWR = 1:1 based
on a 100Ω system.) [a, b]
PMAX24
+22
Storage Temperature Range
TSTOR
-65
+150
Lead Temperature (soldering, 10s)
TLEAD
+260
Electrostatic Discharge – Human Body Model (HBM)
(JEDEC/ESDA JS-001-2012)
VESDHBM
500
Electrostatic Discharge – Charge Device Model (CDM)
(JEDEC 22-C101F)
VESDCDM
1500
[a] Exposure to these maximum RF levels can result in significant VCC current draw due to overdriving the amplifier stages.
[b] Tested using an external 2:1 transformer at the RF output.
Units
V
V
dBm
°C
°C
V
V
Recommended Operating Conditions
Table 3. Recommended Operating Conditions
Parameter
Symbol
Condition
Minimum
Typical
Maximum Units
Power Supply Voltage [a]
VCC VCC pins
4.75 5.25 V
Operating Temperature Range
TEP Exposed paddle temperature
-40
+115 °C
Junction Temperature
TJMAX
150 °C
RF Frequency Range [b]
fRF
1.4 3.2 GHz
RF_IN Source Impedance
ZRF_IN
Single-ended
50
RF_OUT Load Impedance
ZRF_OUT
Differential
100
[a] Although the device will operate with a minimum supply voltage of 3.15V, the performance of the device has been optimized to operate
within a supply voltage range of 4.75V to 5.25V.
[b] To optimize RF performance, different matching components can be used as described in the BOM.
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