Summary |  MB15F02SL |  MB15F03SL |  MB15F07SL |  MB15F08SL |  MB15F72UL |  MB15F73UL |   MB15F74UL |  MB15F76UL |  MB15F78UL |  MB15F72UV |  MB15F73UV |  MB15F74UV |

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General Description

The Fujitsu MB15F78UL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 2600MHz and a 1200MHz prescalers. A 32/33 or a 64/65 for the 2600MHz prescaler, and a 16/17 or a 32/33 for the 1200MHz prescaler can be selected for the prescaler that enables pulse swallow operation.

The BiCMOS process is used, as a result a supply current is typically 4.5mA typ. at 2.7V. The supply voltage range is from 2.4V to 3.6V. A refined charge pump supplies well-balanced output current with 1.5mA and 6mA selectable by serial data.The data format is same as the previous one MB15F08SL, MB15F78SP. Fast locking is acheived for adopting the new circuit.

The new package(BCC20) decreases the mount area of MB15F78UL by more than 30% compared with the former BCC16(for dual PLL).

MB15F78SP is ideally suited for wireless mobile communications, such as GSM and PCS.

Technical Features

• High frequency operation:
  
  • RF synthesizer: 2600MHz max
  • IF synthesizer: 1200MHz max
• Low power supply voltage: VCC = 2.4 to 3.6 V
• Ultra Low power supply current : ICC = 4.5 mA typ. (VCC = Vp=2.7V, Ta=25°C, SW=0 in TX, RX locking state)
• Direct power saving function:
  Power supply current in power saving mode
  Typ. 0.1 mA(Vcc=Vp=2.7V, Ta=25°C), Max. 10 mA(Vcc=Vp=2.7V)
• Dual modulus prescaler : 2600MHz prescaler(32/33. 64/65) / 1200MHz prescaler(16/17 or 32/33)
• 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
• On-chip phase comparator for fast lock and low noise
• On-chip phase control for phase comparator
• Operating temperature: Ta = -40 to 85°C
• Serial data format compatible with MB15F08SL

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