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■ DESCRIPTION

The Fujitsu MB15F02L is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 1.2 GHz and a 250 MHz prescalers. A 64/65 or a 128/129 for the 1.2 GHz prescaler, and a 16/17 or a 32/33 for 250 MHz prescaler can be selected that enables pulse swallow operation. The latest BiCMOS process technology is used, resuItantly a supply current is limited as low as 4.0 mA typ. at a supply voltage of 3.0 V.

Furthermore, a super charger circuit is included to provide a fast tuning as well as low noise performance. As a result of this, MB15F02L is ideally suitable for digital mobile communications, such as GSM (Global System for Mobile Communications).

■ FEATURES

? High frequency operation RF synthesizer: 1.2 GHz max. / IF synthesizer: 250 MHz max.

? Low power supply voltage: VCC = 2.7 to 3.6 V

? Very Low power supply current : ICC = 4.0 mA typ. (VCC = 3 V)

? Power saving function : Supply current at power saving mode Typ.0.1 μA (VCC = 3 V), Max.10 μA (IPS1 = IPS2)

? Dual modulus prescaler : 1.2 GHz prescaler (64/65,128/129) , 250 MHz prescaler (16/17,32/33)

? Serial input 14-bit programmable reference divider: R = 5 to 16,383

? Serial input 18-bit programmable divider consisting of:

- Binary 7-bit swallow counter: 0 to 127

- Binary 11-bit programmable counter: 5 to 2,047

? On–chip high performance charge pump circuit and phase comparator, achieving high–speed lock–up and low phase noise

? On–chip phase control for phase comparator

? Wide operating temperature: Ta = –40 to 85°C