■ DESCRIPTION
The Fujitsu MB15F02SL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 1200 MHz and a 500 MHz prescalers. The 1200 MHz and 500 MHz prescalers have a dual modulus division ratio of 128/129 or 64/65, and a 8/9 or a 16/17 enabling pulse swallowing operation. The supply voltage range is between 2.4 V and 3.6 V. The MB15F02SL uses the latest BiCMOS process. As a result, the supply current is typically 3 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. MB15F02SL is ideally suited for wireless mobile communications, such as GSM and PDC.

■ FEATURES
• High frequency operation: RF synthesizer: 1200 MHz max
IF synthesizer: 500 MHz max
• Low power supply voltage: VCC = 2.4 to 3.6 V
• Ultra Low power supply current: ICC = 3.0 mA typ. (VCC = 2.7 V, Ta = +25°C, in IF, RF locking state)
ICC = 3.5 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 = 3.0 V, Ta = +25°C), Max. 10 µA (VCC = 3.0 V)
• Dual modulus prescaler: 1200 MHz prescaler (64/65, 128/129)/500 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 MB15F02, MB15F02L