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■DESCRIPTION

The Fujitsu MB15E05L is serial input Phase Locked Loop (PLL) frequency synthesizer with a 2.0 GHz prescaler. A 64/65 or a 128/129 can be selected for the prescaler 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. This operates with a supply voltage of 3.0 V (typ.) Furthermore, a super charger circuit is included to get a fast tuning as well as low noise performance. As a result of this, MB15E05L is ideally suitable for digital mobile communications, such as DCS 1800 and PCS 1900.

■FEATURES

? High frequency operation: 2.0 GHz 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 : IPS = 0.1μA typ.(VCC = 3 V)

? Pulse swallow function: 64/65 or 128/129

? 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.

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

? Plastic 16-pin SSOP package (FPT-16P-M05) and 16-pin BCC package (LCC-16P-M02)