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DESCRIPTION

The M64811AGP is a 1.1GHz/500MHz band two-system one-chip PLL frequency synthesizer.

Using a high performance Bi-CMOS process , the product contains one two-modulus (1/32 and 1/33) prescaler that accepts inputs up to 1.1GHz and another two-modulus (1/16 and 1/17) prescaler that accepts inputs up to 500MHz ,thus helping make the equipment compact.

FEATURES

? Operating supply voltage : 2.7V~3.6V

? Operating temperature : -30°C~+85°C

? 2 PLL systems (1.1GHz and 500MHz) are on one chip .

PLL1 : 700MHz~1.1GHz PLL2 : 100MHz~500MHz

? Low power consumption (Icc=8mA Typ at Vcc=3V) .

? Dividing ratio setting ranges :

FIN1 for 1.1GHz VCO? ? ? ? ? N(VCO1)=1,024~131,071

FIN2 for 500MHz VCO? ? ? ? ? N(VCO2)=256~131,071

OSC for Fref ? ? ? ? ? ? ? ? ? ? ? ? ? N(Fref)=5~2,047

? Each loop has input pin for sleep mode .

Power supplies to 2 loops can be independently turned ON/OFF .

Also can be controlled by the serial data . (When SLEEP1 and SLEEP2 is H . )

? The PLL standard oscillation circuit can adopt a B-E Colpitts type oscillation circuit to from a stable

oscillation circuit.

? Current controlled charge pump . (Icp=±2mA const.)

? Locked condition detecting output

If a phase difference smaller than 3 times (?t) of the OSC period continues for 15 periods or

longer , the condition is judged as locked, and the LOCK terminal goes to L .

(When , for example , fosc=19.2 MHz , ?t=156 ns)

? PLL lock/unlock status indicate function .

(Judged in the system turned on if the other system is turned off . )

? Small package (16pin SSOP, lead pitch : 0.65mm)

APPLICATION

? Digital cordless phone (CT2)

? Digital cellular phone (PDC)