FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-21369-1E
ASSP
Dual S
erial Input
PLL Frequency
Synthesizer
MB15F78UL
s
DESCRIPTION
The Fujitsu MB15F78UL is a serial input Phase Locked Loop (PLL) frequency synthesizer with a 2600 MHz and
a 1200 MHz prescalers. A 32/33 or a 64/65 for the 2600 MHz prescaler, and a 16/17 or a 32/33 for the 1200 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 4.5 mA at 2.7 V. The supply voltage range
is from 2.4 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 data format is the same as the previous one MB15F08SL, MB15F78SP Fast locking
.
is achieved for adopting the new circuit.
The new package (BCC20) decreases a mount area of MB15F78UL more than 30% comparing with the former
BCC16 (for dual PLL) .
MB15F78UL is ideally suited for wireless mobile communications, such as GSM and PCS.
s
FEATURES
: RX synthesizer : 2600 MHz Max.
: TX synthesizer : 1200 MHz Max.
• Low power supply voltage
: V
CC
=
2.4 to 3.6 V
• Ultra low power supply current : I
CC
=
4.5 mA Typ.
(V
CC
=
Vp
=
2.7 V, Ta
= +25 °C,
SW
TX
=
SW
RX
=
0, in TX/RX locking state)
(Continued)
• High frequency operation
s
PACKAGES
20-pin plastic TSSOP
20-pad plastic BCC
(FPT-20P-M06)
(LCC-20P-M05)
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
