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LMX2336UTM
1.2 GHz /1.2 GHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications
LMX2335U/LMX2336U
PLLatinum™ Ultra Low Power Dual Frequency
Synthesizer for RF Personal Communications
LMX2335U 1.2 GHz/1.2 GHz
LMX2336U 2.0 GHz/1.2 GHz
General DescriptionThe LMX2335U and LMX2336U devices are high perfor-
mance frequency synthesizers with integrated dual modulus
prescalers. The LMX2335U and LMX2336U devices are
designed for use in applications requiring two RF
phase-locked loops. 64/65ora 128/129 prescale ratio canbe selectedfor each synthesizer. Usinga proprietary digital phase locked loop
technique,the LMX2335U and LMX2336U devices generate
very stable, low noise control signalsfor the RF voltage
controlled oscillators. Both RF synthesizers includea
two-level programmable charge pump. The RF1 synthesizer
has dedicated Fastlock circuitry.
Serial datais transferredto the devices viaa three wire
interface (Data, LE, Clock). Supply voltages from 2.7Vto
5.5V are supported. The LMX2335U and the LMX2336U
feature very low current consumption:
LMX2335U (1.2 GHz)– 3.0 mA, LMX2336U (2.0 GHz)–
3.5mAat 3.0V.
The LMX2335U deviceis availablein 16-pin TSSOP, and
16-pin Chip Scale Package (CSP) surface mount plastic
packages. The LMX2336U deviceis availablein 20-Pin
TSSOP, 24-Pin CSP, and 20-Pin UTCSP surface mount
plastic packages.
Features Ultra Low Current Consumption Upgrade and Compatibleto the LMX2335L and
LMX2336L devices 2.7Vto 5.5V operation Selectable Synchronousor Asynchronous Powerdown
Mode:
ICC-PWDN=1µA typicalat 3.0V Selectable Dual Modulus Prescaler
RF1: 64/65or 128/129
RF2: 64/65or 128/129 Selectable Charge Pump TRI-STATE® Mode Programmable Charge Pump Current Levels
RF1 and RF2: 0.95or 3.8 mA Selectable Fastlock™ Modefor the RF1 Synthesizer Push-Pull Analog Lock Detect Mode LMX2335Uis availablein 16-Pin TSSOP and 16-Pin
CSP LMX2336Uis 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 (MTC16) Thin Shrink Small Outline Package (MTC20)10136787 10136780
Chip Scale Package (SLB16A) Chip Scale Package (SLB24A)
Ultra Thin Chip Scale Package
(SLE20A)10136788 10136781
November 2002
LMX2335U/LMX2336U
PLLatinum
Ultra
Low
Power
Dual
Frequency
Synthesizer
for
Communications
