LMX2581SQE/NOPB Allicdata Electronics
Allicdata Part #:

296-35110-2-ND

Manufacturer Part#:

LMX2581SQE/NOPB

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: Texas Instruments
Short Description: IC RF FREQ SYNTHESIZER 32WQFN
More Detail: N/A
DataSheet: LMX2581SQE/NOPB datasheetLMX2581SQE/NOPB Datasheet/PDF
Quantity: 250
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 3 (168 Hours)
Stock 250Can Ship Immediately
Specifications
Series: --
Packaging: Tape & Reel (TR) 
Lead Free Status / RoHS Status: --
Part Status: Active
Moisture Sensitivity Level (MSL): --
Type: Frequency Synthesizer (RF)
PLL: Yes with Bypass
Input: Clock
Output: Clock
Number of Circuits: 1
Ratio - Input:Output: 1:5
Differential - Input:Output: No/Yes
Frequency - Max: 3.76GHz
Divider/Multiplier: Yes/Yes
Voltage - Supply: 3.15 V ~ 3.45 V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 32-WFQFN Exposed Pad
Supplier Device Package: 32-WQFN (5x5)
Base Part Number: LMX2581
Description

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The LMX2581SQE/NOPB is an integrated, ultra-low noise, fractional-N frequency synthesizer with a dual PLL. It is a programmable clock/timing device that enables an extremely robust, ultra-low noise signal generation system, prominently used in professional wireless products and automotive infotainment systems. With its 256x fIN resolution, and wide tuning range, it offers flexibility and consistent signal quality even in an environment of intense spectral interference.

Applications

The LMX2581SQE/NOPB is primarily designed for RF frequency synthesizers, where low-noise and reliable signals are essential. Its fractional-N architecture is ideal for applications that require high-resolution tuning, such as LTE cellular base stations, Wi-Fi access points, automotive infotainment systems, various industrial and medical equipment, and test-and-measurement instruments. In addition to frequency synthesizers, it can be also used as a general purpose frequency multiplier in applications where ultra-low noise and jitter is of utmost importance

Working Principle

The LMX2581SQE/NOPB is based on the use of a baseband architecture. It features two separate PLLs for even greater accuracy and flexibility in creating signals with low noise, low jitter and wide tuning range. It operates by taking in a reference clock (up to 400 MHz) with either a single-ended or a differential signal, depending on the application. The reference clock is then divided down by a low-noise reference divider to the desired frequency before it is fed to the PLLs. One of the PLLs acts as the main PLL, directly controlling the output frequency, while the second PLL acts as an auxiliary loop, actively managing the spectral purity of the primary PLL.

The LMX2581SQE/NOPB is capable of a 256x frequency multiplier and supports up to 300-MHz output frequency. It also features 8 fixed-frequency multipliers and a low jitter output clock, which makes it perfect for RF applications with stringent noise requirements. Additionally, the device is equipped with a loop filter load compensation pin and gain acceleration logic, making it easier to deploy.

Key features of the LMX2581SQE/NOPB include: a wide frequency range from 5 to 400 MHz; a 256x frequency multiplier; 8 fixed frequency multipliers; a low-noise reference divider; loop filter and load compensation with an integrated PECL/CML output and a low-jitter output clock. The device also supports logic-bus programming.

Conclusion

The LMX2581SQE/NOPB is an advanced, ultra-low noise frequency synthesizer offering a great level of flexibility and performance in applications requiring robust signal generation. With its impressive frequency range, wide tuning range, low-noise reference divider and 8 fixed-frequency multipliers, the device is perfectly suited for a wide variety of clock/timing applications. Furthermore, its integrated PECL/CML output and gain acceleration logic ensure that it can maintain reliable performance even in an environment of intense spectral interference. All in all, the LMX2581SQE/NOPB is an ideal choice for businesses looking to increase accuracy and improve performance in their clock/timing applications.

The specific data is subject to PDF, and the above content is for reference

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