Features Low Current Consumption 2.25V to 2.75V Operation Selectable Synchronous or Asynchronous Powerdown Mode Selectable Dual Modulus Prescaler: LMX2430 RF: 8/9 or 16/17 LMX2433 RF: 8/9 or 16/17 LMX2434 RF: 16/17 or 32/33 LMX243x IF: 8/9 or 16/17 Programmable Charge Pump Current Levels RF and IF: 1 or 4 mA Fastlock™ Technology with Integrated Timeout Counters Digital Filtered Lock Detect Output Analog Lock Detect Output (supports both Push-Pull and Open Drain configurations) 1.8V MICROWIRE Logic Interface Available in 20-Pin TSSOP and 20-Pin UTCSP Description The LMX243x devices are high performance frequency synthesizers with integrated dual modulus prescalers. The LMX243x devices are designed for use as RF and IF local oscillators for dual conversion radio transceivers. A 32/33 or a 16/17 prescale ratio can be selected for the 5.0 GHz LMX2434 RF synthesizer. An 8/9 or a 16/17 prescale ratio can be selected for both the LMX2430 and LMX2433 RF synthesizers. The IF circuitry contains an 8/9 or a 16/17 prescaler. Using a proprietary digital phase locked loop technique, the LMX243x devices generate very stable, low noise control signals for RF and IF voltage controlled oscillators. Both the RF and IF synthesizers include a two-level programmable charge pump. Both the RF and IF synthesizers have dedicated Fastlock circuitry with integrated timeout counters. Furthermore, only a single word write is required to power up and tune the synthesizers to a new frequency. Serial data is transferred to the devices via a three-wire interface (DATA, LE, CLK). A low voltage logic interface allows direct connection to 1.8V devices. Supply voltages from 2.25V to 2.75V are supported . The LMX243x family features low current consumption: LMX2430 (3.0 GHz/ 0.8 GHz)-2.8 mA/ 1.4 mA, LMX2433 (3.6 GHz/ 1.7 GHz) -3.2 mA/ 2.0 mA, LMX2434 (5.0 GHz/ 2.5 GHz)-4.6 mA/ 2.4 mA at 2.50V. The LMX243x devices are available in 20-Pin TSSOP and 20-Pin UTCSP surface mount plastic packages. Applications Mobile Handsets (GSM, GPRS, W-CDMA, CDMA, PCS, AMPS, PDC, DCS) Cordless Handsets (DECT, DCT) Wireless Data Cable TV Tuners

LMX2434 WEBENCH® Design/Analyze/Build It RF-Side PLL Design Options Min Output Freq MHz >= 1000 help Max Output Freq MHz <= 5000 help Channel Spacing KHz > 0 help AUX-Side PLL Design Options Min Output Freq MHz >= 100 help Max Output Freq MHz <= 2500 help Channel Spacing KHz > 0 help Global Design Options Crystal Frequency MHz > 0 help Max Supply V > 0 help What is WEBENCH®?

	Block Diagram click for larger image
Typical Performance *click for larger image

Parameters Values Max PLL Freq 5000 MHz Min PLL Freq 1000 MHz Max Aux PLL Freq 2500 MHz Min Aux PLL Freq 500 MHz Normalized PLL Phase Noise -219 dBc/Hz Supply Current 7 mA Number of PLLs 2 PLL Type Integer-N Min Supply Voltage 2.35 Volt Max Supply Voltage 2.75 Volt Fastlock Yes Temperature Min -40 deg C Temperature Max 85 deg C Power Consumption Undefined Watt PowerWise Rating 6 Undefined mW x ps /ch PowerWise Undefined

Datasheets

Title		Size	Date	Other Language
	LMX2434 5.0 GHz/2.5 GHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications	943 Kbytes	28-May-03

Application Notes

Title		Size	Date	Other Language
	AN-1275: Application Note 1275 Optimizing LMX243x FinRF Input Sensitivity Using Simple Matching Techniques	178 Kbytes	2-Jun-03

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMX2434SLEX/NOPB RoHS Status	LAMINATE UCSP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.94 each at 1K+ pcs	reel of 2500
LMX2434TM/NOPB RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 214 AVNET-EM Worldwide 163 DIGI-KEY Worldwide 35 FARNELL Europe and Asia 19 NEWARK Americas 19 TAYLOR Americas 214	$1.86 each at 1K+ pcs	rail of 73
LMX2434TMX/NOPB LMX2434TMX RoHS Status	TSSOP	Full production Lead Time: 6 weeks	Distributor Region Qty CEAC Asia Pacific 2500 DIGI-KEY Worldwide 0	$1.86 each at 1K+ pcs	reel of 2500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMX2434.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMX2434 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMX2434EVAL	5.0 GHz/2.5 GHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications	Full production	Distributor Region Qty DIGI-KEY Worldwide 0 MOUSER Worldwide 2	$176.00 each	1
Description: The LMX2434SLE Evaluation Board simplifies evaluation of the LMX2434 5.0 GHz/2.5 GHz PLLatinum™ Dual High Frequency synthesizer. The board enables all performance measurements with no additional support circuitry. The evaluation board consists of a LMX2434SLE device, RF and IF VCO modules, and RF and IF loop filters built by discrete components. The SMA flange mount connectors are provided for external reference input, RF and IF VCO outputs, and the power and grounding connection. A cable assembly is bundled with the evaluation board for connecting to a PC through the parallel printer port. By means of MICROWIRE™ serial port emulation, the Code Loader software included can be run on a PC to facilitate the LMX2434 internal register programming for the evaluation and measurement. Contents: A Fully Assembled LMX2434TM Evaluation Board CodeLoader Programming Cable Resources: LMX2434 Product Data Sheet LMX2430/33/34 Family Evaluation Board Instructions

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMX2434SLEX/NOPB	17.819 17.819	LAMINATE UCSP	20	1	260	Detail	N/A	N/A	NSXYTT X2434 SLE
LMX2434TM/NOPB	71.68 72.001	TSSOP	20	1	260	Detail	N/A	N/A	NSUZXYTT LMX2434 TMDD
LMX2434TMX/NOPB LMX2434TMX	71.681 72.002	TSSOP	20	1 1	260 260	Detail	N/A	N/A	NSUZXYTT LMX2434 TMDD

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMX2434.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMX2434 is located at RoHS Status.

Design Tools

Title	Size	Date
LMX2430/33/34 Evaluation Board Instructions
Design and Simulation Software & CodeLoader Programming Software

CAD Symbols and Models N/A

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMX2434SLEX	BICMOS8	2	15238	132	0	1812500	2	514301823
LMX2434TM	BICMOS8	2	15238	132	0	1812500	2	514301823
LMX2434TMX	BICMOS8	2	15238	132	0	1812500	2	514301823

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.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMX2434.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMX2434 is located at RoHS Status.