LMX2346 - 2.0 GHz PLLatinum Frequency Synthesizer for RF Personal Communications [Life-time buy]
Datasheet Packaging Samples & Pricing Reliability Design Tools Knowledge Base

Features
•RF operation up to 2.5 GHz
•2.7V to 5.5V operation
•Digital & Analog Lock Detect
•32/33 Dual modulus prescaler
•Excellent Phase Noise
•Internal balanced, low leakage charge pump
•Pin Compatible to LMX2323

General Description

The LMX2346/7 are high performance frequency synthesizers with an integrated 32/33 dual modulus prescaler. More...


Applications

•Cellular DCS/PCS/3G infrastructure equipment
•Wireless Local Area Networks (WLANs)
•Other wireless communication systems
 


Typical Performance

click for larger image


  Also Recommended
LMX2347▲Higher Maximum Operating Frequency.
Additional Resources
Online Seminars Design Tools


Block Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LMX2346/LMX2347 PLLatinum™ Frequency Synthesizer for RF Personal Communications LMX2346 2.0 GHz LMX2347 2.5 GHz 606
Kbytes		 1-Jun-04 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LMX2346TMTSSOP16NOPB
STD		1
1		260
260		RoHS N/A Lifetime buyN/A
 
Buy Now 		1K+$1.50rail
of
92		NSUZXYTT
LMX2346
TMDD
6 weeks500
LMX2346TMXTSSOP16NOPB
STD		1
1		260
260		RoHS N/A Lifetime buyN/A
 
Buy Now 		1K+$1.50reel
of
2500		NSUZXYTT
LMX2346
TMDD
8 weeks5000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LMX2346SLBX
NONE
NONE
19 Jun 2009
LMX2346TM
LMX2531
National Semiconductor
30 Nov 2009
LMX2346TMX
LMX2531
National Semiconductor
30 Nov 2009

General Description

The LMX2346/7 are high performance frequency synthesizers with an integrated 32/33 dual modulus prescaler. The LMX2346 is designed for RF operation up to 2.0 GHz. The LMX2347 is designed for RF operation up to 2.5 GHz. Using a proprietary digital phase locked loop technique, the LMX2346/7 generates very stable, low noise control signals for UHF and VHF voltage controlled oscillators.

Serial data is transferred into the LMX2346/7 via a three-line MICROWIRE interface (DATA, LE, CLOCK). Supply voltage range is from 2.7V to 5.5V. The charge pump provides 4 mA output current.

The LMX2346/7 are manufactured using National's 0.5µ ABiC V silicon BiCMOS process and is available in 16-pin TSSOP and 16-pin CSP packages.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMX2346SLBXABIC0163130028280002802452721
LMX2346TMABIC0163130028280002802452721
LMX2346TMXABIC0163130028280002802452721

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
LMX2346 Evaluation Board Instructions 898 Kbytes 6-Jan-2004 View Online Download  
"LMX-Utility Evaluation Board: Add features and functionality to the standard evaluation boards, such as amplification, loop filter, and RF functions"     View    

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]