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■DESCRIPTION

The Fujitsu MB15F03SL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 1750 MHz and a 600 MHz prescalers. The 1750 MHz prescaler, and 600 MHz prescaler have a dual modulus division ratio of 64/65 or 128/129 and 8/9 or 16/17 enabling pulse swallow operation.

The supply voltage range is between 2.4 V and 3.6 V. The MB15F03SL uses the latest BiCMOS process. As a result, the supply current is typically 3.5 mA at 2.7 V. A refined charge pump supplies a well-balanced output current of 1.5 mA or 6 mA. The charge pump current is selectable

by serial data. MB15F03SL is ideally suited for wireless mobile communications, such as GSM and PDC.

■FEATURES

? High frequency operation: RF synthesizer: 1750 MHz max

IF synthesizer: 600 MHz max

? Low power supply voltage: VCC= 2.4 to 3.6 V

? Ultra Low power supply current:ICC = 3.5 mA typ. (VCC= 2.7 V, Ta = +25°C, in IF, RF locking state)

ICC = 4.0 mA typ. (VCC= 3.0 V, Ta = +25°C, in IF, RF locking state)

? Direct power saving function: Power supply current in power saving mode

Typ. 0.1 μA (VCC= 3V, Ta = +25°C), Max. 10μA (VCC= 3V)

? Dual modulus prescaler: 1750 MHz prescaler (64/65 or 128/129)/600 MHz prescaler (8/9 or 16/17)

? Serial input 14-bit programmable reference divider: R = 3 to 16,383

? Serial input programmable divider consisting of:

- Binary 7-bit swallow counter: 0 to 127

- Binary 11-bit programmable counter: 3 to 2,047

? Software selectable charge pump current

? On–chip phase control for phase comparator

? Operating temperature: Ta = –40 to +85°C

? Pin compatible with MB15F03, MB15F03L