Texas Instruments LMK04803BISQX/NOPB
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- LMK04803BISQX/NOPB
- Texas Instruments
- IC CLOCK DUAL PLL 64WQFN
- Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
- LMK04803BISQX/NOPB Datasheet
- 64-WFQFN Exposed Pad
- Tube
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What is LMK04803BISQX/NOPB
Texas Instruments Part Number LMK04803BISQX/NOPB（Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers）, developed and manufactured by Texas Instruments, distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.
LMK04803BISQX/NOPB is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.
LMK04803BISQX/NOPB Specifications
- Part NumberLMK04803BISQX/NOPB
- CategoryClock/Timing - Clock Generators, PLLs, Frequency Synthesizers
- ManufacturerTexas Instruments
- DescriptionIC CLOCK DUAL PLL 64WQFN
- PackageTube
- SeriesPLLatinum™
- TypeJitter Cleaner
- Voltage - Supply3.15V ~ 3.45V
- Operating Temperature-40°C ~ 85°C
- Mounting TypeSurface Mount
- Package / Case64-WFQFN Exposed Pad
- Supplier Device Package64-WQFN (9x9)
- OutputLVCMOS, LVDS, LVPECL
- Frequency - Max1.536GHz
- Number of Circuits1
- InputLVCMOS, LVDS, LVPECL
- PLLYes
- Ratio - Input:Output2:14
- Differential - Input:OutputYes/Yes
- Divider/MultiplierYes/No
Application of LMK04803BISQX/NOPB
LMK04803BISQX/NOPB Datasheet
LMK04803BISQX/NOPB Datasheet , Tube,PLLatinum™,Jitter Cleaner,3.15V ~ 3.45V,-40°C ~ 85°C,Surface Mount,64-WFQFN Exposed Pad,64-WQFN (9x9),LVCMOS, LVDS, LVPECL,1.536GHz,1,LVCMOS, LVDS, LVPECL,Yes,2:14,Yes/Yes,Yes/No
LMK04803BISQX/NOPB Classification
Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
FAQ about Clock/Timing - Clock Generators, PLLs, Frequency Synthesizers
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1. What is a PLL frequency synthesizer?
A PLL frequency synthesizer is a device that generates multiple output frequencies using phase-locked loop technology. Its core function is to generate different multiples of frequencies from a single reference frequency. This method is widely used in radio frequency (RF) communication systems, especially in generating local oscillator (LO) signals for up-conversion and down-conversion of RF signals.
The working principle of a PLL frequency synthesizer is based on phase-locked loop technology, which includes key components such as phase/frequency detector (PFD), loop filter, and voltage-controlled oscillator (VCO). -
2. How does Phase-locked loops（PLL） work?
PLL (phase locked loop) is a feedback control circuit that continuously adjusts the frequency and phase of the internal oscillation signal to synchronize with the input reference signal by comparing the phase difference between the input signal and the feedback signal. PLL is mainly composed of phase detector (PD), loop filter (LF), voltage controlled oscillator (VCO) and optional divider (Divider).
When PLL starts working, the frequency of input reference signal is always different from the inherent oscillation frequency of voltage controlled oscillator, resulting in constant phase difference. The error voltage output by the phase detector is converted into a control voltage through a loop filter and added to the voltage-controlled oscillator, so that its frequency is gradually adjusted to synchronize with the input reference signal and enter the "locked" state. If the frequency and phase of the input reference signal change, the PLL controls the frequency and phase of the voltage-controlled oscillator to track the changes of the input reference signal and re-enter the locked state. -
3. What are the three types of frequency synthesizers?
There are three main types of frequency synthesizers: direct analog frequency synthesis, indirect frequency synthesis, and direct digital frequency synthesis.
Direct analog frequency synthesis: This method uses one or more different crystal oscillators as reference signal sources to directly generate many discrete frequency output signals through frequency multiplication, frequency division, mixing, etc. The advantages of direct analog frequency synthesis are high long-term and short-term frequency stability and fast frequency conversion speed, but it is difficult to debug and difficult to suppress spurious signals.
Indirect frequency synthesis: also known as phase-locked loop frequency synthesis technology (PLL), using one or several reference frequency sources, through harmonic generator mixing and frequency division, etc. to generate a large number of harmonics or combined frequencies, and then use a phase-locked loop to lock the frequency of the voltage-controlled oscillator to a certain harmonic or combined frequency. The advantages of indirect frequency synthesis are low cost and the ability to synthesize any frequency, but slow response, mainly used in civilian equipment.
Direct digital frequency synthesis: This method performs frequency synthesis based on the concept of phase, using digital sampling and storage technology, with the advantages of precise phase and frequency resolution, fast conversion time, etc. The key components of direct digital frequency synthesis include digital-to-analog converters, phase accumulators, and memories, etc., which store the required waveform version in digital format and create signals.
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