RF PLL and
Synthesizer Solutions
Communications, industrial, consumer and
automotive applications
ti.com/pll
2016
RF PLL and Synthesizer Portfolio
Leveraging proven PLLatinum® PLL technology, TI’s broad portfolio of phase-locked loops (PLL) and RF synthesizer
(PLL + VCO) offers industry’s lowest phase noise and spurs, enabling leading-edge performance in industrial,
communications, and automotive systems.
Portfolio key features:
•Flexible custom waveform ramp generation
•Easy to use FSK modulation
•Integer boundary spurs (IBS) removal
•Integrated LDO for easy single supply
RF PLL Portfolio (Ranked By PLL Phase Noise)
LMX2592
Industry’s
Best Phase -231
Noise
250
LMX2582
250
Normalized Phase Noise (dBc/Hz)
39
LMX2581E
-229
178
LMX2492/LMX2492-Q1
-227
-225
60
LMX2541 (6 Parts)
120
LMX2531 (17 Parts)
-212
-210
34
LMX2512/22
Current Consumption (mA)
LMX2571
17
LMX2487/E
-210
5
LMX2485/E/Q (AECQ)
10MHz
50MHz
100MHz
1GHz
LMX25xx: PLL+VCO
LMX24xx: PLL
4GHz
6GHz
9GHz
15GHz
New
RF PLL Portfolio (Ranked By VCO Phase Noise)
9.8GHz
VCO Phase Noise
Normalized to 1GHz Fcarrier @ 100kHz Foffset
(dBc/Hz)
-130
Industry’s Best Wideband
Integrated VCO Phase Noise
-128
LMX2582
LMX2592
3.13GHz
-126
LMX2531
-124
3.8GHz
-122
4GHz
-120
LMX2581
LMX2541
1.65GHz
-118
LMX2512
LMX2522
-116
1.34GHz
LMX2571
-114
0
50
100
150
200
250
Current Consumption (mA)
Wideband
RF PLL and Synthesizer Solutions
Narrowband
2
Texas Instruments
2016
Featured RF PLLs and Synthesizers: Focused Applications
Industrial
Test & Measurement
Oscilloscope
LMX2531 - LMX2571 - LMX2581
LMX2582 - LMX2592
Signal/Waveform Generator
LMX2571 - LMX2581 - LMX2582
LMX2592 - LMX2492
Vector Signal Analyzer
LMX2571 - LMX2581 - LMX2582
LMX2592 - LMX2492
Wireless Communications Tester
LMX2581 - LMX2582 - LMX2592 - LMX2492
High Speed Data Acquisition
and Generation
LMX2531 - LMX2571 - LMX2581
LMX2582 - LMX2592
Space, Avionics & Defense
Land Defense Radar / Military Radar
LMX2571 - LMX2581 - LMX2592 - LMX2492
Medical
Low Power RF Interface for
Medical Equipment
LMX2531 - LMX2571 - LMX2485E
Automotive
Automotive Radar
LMX2485Q - LMX2492Q-Q1
RF PLL and Synthesizer Solutions
Others
Land Mobile Radio / Assured
Communication (Police/Fire) / 2-way Radio
LMX2571 - LMX2485E
Wireless Microphone
LMX2571 - LMX2485E
Metering Aggregator
LMX2531 - LMX2571
Sub-GHz Communication
LMX2531 - LMX2571 - LMX2485
Level Meters / Industrial Distance Meters
LMX2492
Radar Detector
LMX2581 - LMX2592 - LMX2492
Communication Equipment
Telecom Infrastructure
Basestation: Remote Radio Unit (RRU)
LMX2531 - LMX2581 - LMX2582
Wireless Infrastructure
Point-to-Point Microwave Backhaul
LMX2592 - LMX2492
Software Defined Radio
LMX2531 - LMX2541 - LMX2571
Tetra Base Station
LMX2571 - LMX2581
Wireless Repeater
LMX2531 - LMX2581 - LMX2582
3
Texas Instruments
2016
LMX24xx RF PLL Family
Low noise and low power fractional-N PLLs
The LMX24xx family of PLLatinum™ RF PLLs offer a wide choice of products to meet the
low noise and low power needs of applications like mobile wireless, compact RF, radar
modules, microwave backhaul, oscilloscopes, spectrum analyzers, land mobile radios,
software defined radios and automotive radar. The LMX2492 offers excellent noise figureof-merit (FOM) of -227dBc/Hz and can connect to an external VCO up to 14GHz making it
ideal for high frequency, high performance applications. The LMX2485E offers a dual PLL
at a very low current consumption of 5mA for low power, hand-held applications.
PLL
LMX2492-Q1 Automotive Radar
VCO
Reference
LPF
LMX2492-Q1
5V charge pump output
Flexible ramp generation
Tx
÷N
Input up to 14 GHz
SPI
Rx
Trigger
DSP
ADC
PLL family
Device
Output Freq
Range
(MHz)
Normalized
PLL Noise
(dBc/Hz)
Analog Supply
(VCC) (V)
Charge Pump
Supply
(VCP) (V)
Total Supply
Current
(mA)
RF Supply
Current
(mA)
IF Supply
Current
(mA)
LMX2492
500 to 14000
-227
3.15 to 3.45
3.15 to 5.25
60
60
N/A
QFN-24
LMX2485
500 to 3000
LMX2485E
50 to 3000
-210
2.5 to 3.6
2.5 to 3.6
5
3.3
1.7
QFN-24
LMX2486
1000 to 4500
-210
2.5 to 3.6
2.5 to 3.6
8.5
5.7
2.5
QFN-24
LMX2487
1000 to 6000
LMX2487E
3000 to 7500
-210
2.5 to 3.6
2.5 to 3.6
8.5
5.7
2.5
QFN-24
LMX2430
250 to 3000
-218
2.25 to 2.75
2.25 to 2.75
4.2
2.8
1.4
TSSOP-20, ULGA-20
LMX2433
500 to 3600
-218
2.25 to 2.75
2.25 to 2.75
5.2
3.2
2
TSSOP-20, ULGA-20
LMX2434
1000 to 5000
-218
2.25 to 2.75
2.25 to 2.75
7
4.6
2.4
TSSOP-20, ULGA-20
Package
Automotive-qualified PLL family
Output Freq Range
(MHz)
Normalized
PLL Noise
(dBc/Hz)
Analog Supply
(VCC) (V)
Charge Pump
Supply
(VCP) (V)
Total Supply
Current
(mA)
RF Supply
Current
(mA)
IF Supply
Current
(mA)
Package
LMX2492-Q1
500 to 14000
-227
3.15 to 3.45
3.15 to 5.25
60
60
N/A
QFN-24
LMX2485-Q1
500 to 3100
-216
2.5 to 3.6
2.5 to 3.6
5
3.3
1.7
QFN-24
Device
New products are listed in bold red
RF PLL and Synthesizer Solutions
4
Texas Instruments
2016
LMX25xx RF Synthesizer Family
Low power and high performance fractional-N synthesizers (PLL with integrated VCO)
The LMX25xx family of RF synthesizers integrates low noise VCOs along with low noise PLLs.
The low power LMX2531 and LMX2571 enables energy efficient and mobile solutions, while
still having best-in-class performance to meet industry standards. The high performance
LMX2541, LMX2581, LMX2582, and LMX2592 covers up to 9.8GHz at the best noise figures
in the industry to enable high performance solutions.
PLL
LMX2571 for land mobile / 2-way radio with built-in FSK
OSCin
LDO
LMX2571
Tx
DC/DC
PLL
T/R
PA
T/R
PMU
FSK Modulator
Rx LO
Serial Interface for
FSK/FM Modulation
DATA, CLK, LE, CE
Demodulator
T/R
USB
DSP
Amp
SPK
Audio
CODEC
Mic
LMX2581 Zero IF Receiver
LPF
ADC
Digital
LPF
ADC
90
LMX2581E
Reference
LMX2581E
High performance synthesizer family with integrated VCO
Output
Frequency(Min)
(MHz)
Output
Frequency(Max)
(MHz)
VCO Phase Noise
Normalized to
1GHz @ 100kHz
Offset (dBc/Hz)
Normalized PLL
Phase Noise
(dBc/Hz)
1/f Noise (10 kHz offset at 1 GHz carrier)
(dBc/Hz)
Current
Consumption (mA)
PFD frequency
(MHz)
LMX2592
20
9800
-129
-231
-126
250
200
LMX2582
20
5500
-129
-231
-126
250
200
LMX2571
10
1344
-115
-231
-124
39
130
LMX2581E
50
3800
-121
-229
-121
178
200
LMX2541
32
4000
-120
-226
-125
120
104
LMX2531
553
3132
-126
-212
-104
34
32
LMX2522
1619.62
1649.62
-117
17
LMX2512
954.42
1077.57
-117
17
Device
RF PLL and Synthesizer Solutions
5
Texas Instruments
2016
Design Resources and References
WEBENCH® Clock Architect and PLLatinum Sim Simulation Tools
TI offers two unique tools to design and simulate PLLs. Both tools include all the features enabling system
designers to achieve optimized PLL and RF synthesizer solutions as well as simulate performance of the
recommended solution.
WEBENCH Clock Architect generates clock tree planning and end-to-end solutions. PLLatinum Sim excels at
simulating and optimizing single devices including loop filter calculations and phase noise simulation.
PLLatinum Sim phase noise simulation
Start your design at ti.com/clockarchitect or ti.com/pllatinumsim.
TICS Pro
New software for device register programming.
More powerful, more flexibility!
TICS Pro easy to use GUI
Start your design at ti.com/ticspro.
To learn more about TI’s family of PLLs and RF synthesizers, visit ti.com/pll.
TM
E2E Clocks & Timers Forum
ti.com/e2eclocks
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SLYT552B
RF PLL and Synthesizer Solutions
6
Texas Instruments
2016
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