High performance frequency synthesizer system with integrated VCO
Product details
Parameters
Package | Pins | Size
Features
- Multiple Frequency Options Available
- See Device Information Table
- Frequencies From: 553 MHz to 3132 MHz
- PLL Features
- Fractional-N Delta-Sigma Modulator Order
Programmable up to Fourth Order - FastLock/Cycle Slip Reduction with Timeout
Counter - Partially Integrated, Adjustable Loop Filter
- Very Low Phase Noise and Spurs
- Fractional-N Delta-Sigma Modulator Order
- VCO Features
- Integrated Tank Inductor
- Low Phase Noise
- Other Features
- 2.8-V to 3.2-V Operation
- Low Operating Current
- Low Power-Down Current
- 1.8-V MICROWIRE Support
- 36-Pin 6-mm × 6-mm × 0.8-mm WQFN Package
Description
The LMX2531 is a low-power, high-performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and adjustable. Ultra-low noise and high-precision LDOs are integrated for the PLL and VCO, which yield higher supply-noise immunity and more consistent performance. When combined with a high-quality reference oscillator, the LMX2531 device generates very stable, low-noise local-oscillator signals for up and down conversion in wireless communication devices. The LMX2531 device is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. Several different versions of this product accommodate different frequency bands.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LMX2531 High-Performance Frequency Synthesizer System With Integrated VCO datasheet (Rev. S) | Dec. 31, 2014 |
| User guide | LMX2531-xxxx Evaluation Board User’s Guide (Rev. A) | Nov. 26, 2013 | |
| Application note | AN-1558 Clocking High-Speed A/D Converters (Rev. B) | May 01, 2013 | |
| Application note | AN-1821 CPRI Repeater System (Rev. A) | Apr. 26, 2013 | |
| Application note | AN-1879 Fractional N Frequency Synthesis (Rev. A) | Apr. 26, 2013 | |
| Application note | Selecting Amplifiers, ADCs, and Clocks for High-Performance Signal Paths | Sep. 13, 2007 | |
| Application note | Generating Precision Clocks for Time- Interleaved ADCs | Aug. 02, 2007 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 553 - 592 MHz
- High Band 1106 - 1184 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 592 - 634 MHz
- High Band 1184 - 1268 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 634 - 680 MHz
- High Band 1268 - 1360 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
Frequency Range:
- Low Band 749.5 - 755 MHz
- High Band 1499 - 1510 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 725 - 790 MHz
- High Band 1450 - 1580 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
Frequency Range
- Low Band 765 - 818 MHz
- High Band 1530 - 1636 MHz
Description
The LMX2531LQ1742 Evaluation Board simplifies evaluation of the LMX2531LQ1742 PLL/VCO synthesizer system. The board enables all performance measurements with no additional support circuitry. The evaluation board consists of a LMX2531LQ1742 device, and a cable assembly. The cable assembly is bundled (...)
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
Frequency Range
- Low Band 917 - 1014 MHz
- High Band 1834 - 2028 MHz
Description
Features
Frequency Range
- Low Band 952 - 1137 MHz
- High Band 1904 - 2274 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
Frequency Range:
- Low Band 1089 - 1200 MHz
- High Band 2178 - 2400 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
Frequency Range
- Low Band 1168 - 1395 MHz
- High Band 2336 - 2790 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 1355 - 1462 MHz
- High Band 2710 - 2925 MHz
Description
The LMX2531 is a low power, high performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and also adjustable. Also included are integrated ultra-low noise and high precision (...)
Features
- Low Band 1455 - 1566 MHz
- High Band 2910 - 3132 MHz
Software development
Features
- Part selection based on current, cost, phase noise and package
- Filter design up for passive and active filters up to 4th-order
- Simulation of phase noise including PLL, fractional engine, voltage-controlled oscillator (VCO), input, dividers, and loop filter
- Simulation of spurs including phase detector (...)
Features
- Program EVMs through the USB2ANY Interface Adaptor or onboard USB interface.
- Export programming configurations for use in end application.
Which software do I use?
| Product | Loop (...) |
Design tools & simulation
Features
- Accepts customer specific design requirements such as input frequencies, output frequencies, clock formats and clock counts
- Generates clock trees by taking into account a variety of advanced specifications, such as noise floor and phase determinism requirements
- Presents clear and intuitive block (...)
Reference designs
Design files
-
download TIDA-00479 BOM.pdf (327KB) -
download TIDA-00479 CAD Files.zip (2706KB) -
download TIDA-00479 Gerber.zip (787KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| WQFN (NJG) | 36 | View options |
| WQFN (NJH) | 36 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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