Texas Instruments LMX2430SLEX/NOPB

Description
The LMX243x devices are highperformance frequency synthesizers with integrated dualmodulus prescalers. They are designed for use as RF and IF local oscillators for dualconversion radio transceivers.
Using a proprietary digital phaselocked loop technique, the LMX243x devices generate very stable, lownoise control signals for RF and IF voltagecontrolled oscillators. Both the RF and IF synthesizers include a twolevel 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 threewire interface (DATA, LE, CLK). A lowvoltage 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 20Pin TSSOP and 20Pin ULGA surface mount plastic packages.

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 PushPull and Open Drain configurations)
1.8V MICROWIRE Logic Interface
Available in 20Pin TSSOP and 20Pin ULGA

Applications
Mobile Handsets (GSM, GPRS, WCDMA, CDMA, PCS, AMPS, PDC, DCS)
Cordless Handsets (DECT, DCT)
Wireless Data
Cable TV Tuners