LMX2531 Series

High performance frequency synthesizer system with integrated VCO

Catalog

High performance frequency synthesizer system with integrated VCO

Part	Number of Circuits	Frequency - Max [Max]	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Input	Operating Temperature [Max]	Operating Temperature [Min]	Divider/Multiplier	Ratio - Input:Output [custom]	Supplier Device Package	Output	Package / Case	Type	Function	Supplied Contents	Utilized IC / Part
Texas Instruments LMX2531LQ1570E/NOPB	1	1.636 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQ2820E/NOPB	1	2.925 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQE1515E/NOPB	1	1.58 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQX2570E/NOPB	1	2.79 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX25311650EVAL														Timing	Frequency Synthesizer	Board(s)	LMX2531LQ1650E
Texas Instruments LMX2531LQ1910E/NOPB	1	2.028 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQ1778E/NOPB	1	1.84 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQ1515E/NOPB	1	1.58 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQ1742/NOPB	1	1.866 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)
Texas Instruments LMX2531LQX1226E/NOPB	1	1.268 GHz	Surface Mount	3.2 V	2.8 V	Clock	85 °C	-40 °C	Yes/No	2:2	36-WQFN (6x6)	CMOS	36-WFQFN Exposed Pad	Frequency Synthesizer (RF)

Catalog

High performance frequency synthesizer system with integrated VCO

Key Features

• Multiple Frequency Options AvailableSeeDevice InformationTableFrequencies From: 553 MHz to 3132 MHzPLL FeaturesFractional-N Delta-Sigma Modulator OrderProgrammable up to Fourth OrderFastLock/Cycle Slip Reduction with TimeoutCounterPartially Integrated, Adjustable Loop FilterVery Low Phase Noise and SpursVCO FeaturesIntegrated Tank InductorLow Phase NoiseOther Features2.8-V to 3.2-V OperationLow Operating CurrentLow Power-Down Current1.8-V MICROWIRE Support36-Pin 6-mm × 6-mm × 0.8-mm WQFN PackageMultiple Frequency Options AvailableSeeDevice InformationTableFrequencies From: 553 MHz to 3132 MHzPLL FeaturesFractional-N Delta-Sigma Modulator OrderProgrammable up to Fourth OrderFastLock/Cycle Slip Reduction with TimeoutCounterPartially Integrated, Adjustable Loop FilterVery Low Phase Noise and SpursVCO FeaturesIntegrated Tank InductorLow Phase NoiseOther Features2.8-V to 3.2-V OperationLow Operating CurrentLow Power-Down Current1.8-V MICROWIRE Support36-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. 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.