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DS04-21374-1E
FUJITSU SEMICONDUCTOR
DATA SHEET
ASSP
Dual S
erial Input
PLL Frequency
Synthesizer
MB15F74UL
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DESCRIPTION
The Fujitsu MB15F74UL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 4000 MHz and
a 2000 MHz prescalers. A 64/65 or a 128/129 for the 4000 MHz prescaler, and a 32/33 or a 64/65 for the
2000 MHz 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 9.0 mA at 3.0 V. The supply voltage range
is from 2.7 V to 3.6 V. A refined charge pump supplies well-balanced output current with 1.5 mA and 6 mA
selectable by serial date. The pin assignments are the same as MB15F78UL. Fast locking is achieved for adopting
the new circuit.
The new package (BCC20) decreases a mount area of MB15F74UL more than 30% comparing with the former
BCC16 (for dual PLL) .
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FEATURES
• High frequency operation : RF synthesizer : 4000 MHz Max
: IF synthesizer : 2000 MHz Max
• Low power supply voltage : VCC = 2.7 to 3.6 V
• Ultra low power supply current : I
CC = 9.0 mA Typ
(VCC = Vp = 3.0 V, Ta = +25 °C, SWIF = SWRF = 0 in IF/RF locking state)
(Continued)
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PACKAGE
20-pad plastic BCC
(LCC-20P-M05)