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LMX2491RTWR The Texas Instruments LMX2491RTWR is a low-noise, 6.4 GHz wideband delta-sigma fractional-N PLL with ramp and chirp generation capabilities. It operates with a supply voltage range of 3.15V to 3.45V.
Mfr Part #:

LMX2491RTWR

Available from 3 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LMX2491RTWR is a low-noise, 6.4 GHz wideband delta-sigma fractional-N PLL with ramp and chirp generation capabilities. It operates with a supply voltage range of 3.15V to 3.45V.
✓ Total Stock: 11,262 pcs
$ Price Range: $4.04

LMX2491RTWR Available from 3 distributors

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✓ Non-Authorised
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LMX2491RTWR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current Consumption
Differential
Divider
Frequency
Input
Mounting Type
Number of Circuits
Operating Temperature
Output
PLL
Ratio
Supplier Device Package
Supplier Package
Tape & Reel
Type
Voltage
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LMX2491RTWR Description

Short technical summary and product information.

The LMX2491RTWR from Texas Instruments is a high-performance RF PLL and synthesizer designed for demanding applications. It features a maximum frequency of 6.4 GHz and a minimum frequency of 500 MHz, with a normalized PLL phase noise of -227 dBc/Hz. The device supports versatile ramp and chirp generation, including FSK and PSK modulation, with up to 8 configurable piecewise linear FM modulation profiles.

 

This synthesizer operates with a supply voltage between 3.15V and 3.45V and has a current consumption of 60 mA. It includes a phase frequency detector, a programmable charge pump, and an input for an external VCO. The LMX2491RTWR supports a maximum phase detector rate of 200 MHz, enabling fine PLL resolution and fast ramp generation. It is available in a 24-WQFN exposed pad package, suitable for surface mounting.

 

The device's operating temperature range is -40°C to 125°C. It offers a single 3.3V supply capability and supports up to a 5.25V charge pump, potentially eliminating the need for an external amplifier for improved phase noise performance. The LMX2491RTWR is designed for applications requiring precise frequency synthesis and modulation capabilities.

LMX2491RTWR Quick Information

Product Type: Frequency Synthesizer
Canonical Name: LMX2491 Low Noise Fractional-N PLL with Ramp/Chirp Generation
Subcategory: Frequency Synthesizer

LMX2491RTWR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LMX2491RTWR Estimated Pricing

Qty Low High
1+ $4.04 $4.04

Estimated market price range - modelled values for guidance only, not live distributor offers.

LMX2491RTWR Features

  • Low noise 6.4 GHz fractional-N PLL.
  • Supports ramp and chirp generation.
  • Wideband operation from 500 MHz to 6.4 GHz.
  • Low phase noise of -227 dBc/Hz.
  • Surface mount 24-WQFN package.

LMX2491RTWR Applications

  • Ideal for RF frequency synthesis.
  • Suitable for modulation applications.
  • Used in wideband communication systems.
  • Enables flexible signal generation.

LMX2491RTWR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum operating frequency of the LMX2491RTWR?

The maximum operating frequency is 6.4 GHz.

What is the typical normalized PLL phase noise?

The normalized PLL phase noise is -227 dBc/Hz.

What is the supply voltage range for the LMX2491RTWR?

The supply voltage range is 3.15V to 3.45V.

What type of package is the LMX2491RTWR in?

It is in a 24-WQFN Exposed Pad package.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

Does the LMX2491RTWR support ramp and chirp generation?

Yes, it supports versatile ramp and chirp generation capabilities.

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