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LMX2330USLEX-LMX2331USLEX-LMX2332UTM-LMX2332UTMX
1.2 GHz/600 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2330U/LMX2331U/LMX2332U
PLLatinum™ Ultra Low Power Dual Frequency
Synthesizer for RF Personal Communications
LMX2330U 2.5 GHz/600 MHz
LMX2331U 2.0 GHz/600 MHz
LMX2332U 1.2 GHz/600 MHz
General DescriptionThe LMX233xU devices are high performance frequency
synthesizers with integrated dual modulus prescalers. The
LMX233xU devices are designedfor useasRF andIF local
oscillatorsfor dual conversion radio transceivers. 32/33ora 64/65 prescale ratio canbe selectedforthe2.5
GHz LMX2330URF synthesizer.A 64/65ora 128/129 pres-
cale ratio canbe selected for both the LMX2331U and
LMX2332URF synthesizers. TheIF circuitry containsan8/9a 16/17 prescaler. Usinga proprietary digital phase locked
loop technique, the LMX233xU devices generate very
stable, low noise control signalsfor RF andIF voltage con-
trolled oscillators. BoththeRF andIF synthesizers includea
two-level programmable charge pump. TheRF synthesizer
has dedicated Fastlock circuitry.
Serial datais transferredto the devices viaa three-wire
interface (Data, LE, Clock). Supply voltages from 2.7Vto
5.5Vare supported. The LMX233xU family features ultra low
current consumption:
LMX2330U (2.5 GHz)—3.3 mA, LMX2331U (2.0 GHz)2.9 mA, LMX2332U (1.2 GHz)—2.5 mAat 3.0V.
The LMX233xU devices are availablein 20-Pin TSSOP,
24-Pin CSP, and 20-Pin UTCSP surface mount plastic pack-
ages.
Features Ultra Low Current Consumption Upgrade and Compatibleto LMX233xL Family 2.7Vto 5.5V Operation Selectable Synchronousor Asynchronous Powerdown
Mode:
ICC-PWDN=1µA typical Selectable Dual Modulus Prescaler:
LMX2330U RF: 32/33or 64/65
LMX2331U RF: 64/65or 128/129
LMX2332U RF: 64/65or 128/129
LMX2330U/31U/32U IF: 8/9or 16/17 Selectable Charge Pump TRI-STATE® Mode Programmable Charge Pump Current Levels andIF: 0.95or 3.8 mA Selectable Fastlock™ Modefor theRF Synthesizer Push-Pull Analog Lock Detect Output Availablein 20-Pin TSSOP, 24-Pin CSP, and 20-Pin
UTCSP
Applications Mobile Handsets
(GSM, GPRS, W-CDMA, CDMA, PCS, AMPS, PDC,
DCS) Cordless Handsets
(DECT, DCT) Wireless Data CableTV Tuners
Thin Shrink Small Outline Package
(MTC20) Chip Scale Package (SLB24A)
Ultra Thin Chip Scale Package
(SLE20A)November 2002
LMX2330U/LMX2331U/LMX2332U
PLLatinum
Ultra
Low
Power
Dual
Frequency
Synthesizer
for
Personal
Communications
