FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-21339-2E
ASSP
Dual Serial Input
PLL Frequency Synthesizer
On-Chip 1.1 GHz Prescaler
MB15U10
s
DESCRIPTION
The Fujitsu MB15U10 is a dual serial input phase-locked loop (PLL) frequency synthesizer and is ideally suitable for mobile
communications such as cellular phones.
The MB15U10 has two PLL frequency synthesizer circuits on a single chip: one for transmission and the other for reception (PLL1
and PLL2).
It can operate from a +2.6V to 5.5V supply. Fujitsu’s advanced technology achieves an Icc of 7 mA (typical) as well as 10
µ
A
(max.) at power saving mode.
s
FEATURES
•
•
•
•
Two PLLs’ for transmission/reception
Low current consumption : I
CC
= 7 mA typ. at 3 V
Power saving function
: I
PS
= 10
µ
A max.
Divide ratio setting with serial data input :
Binary 12-bit reference counter:6 to 4,095
Binary 17-bit main counter: 1,024 to 131,071
*Main counters can be programmed individually each other.
On-chip constant current source charge pumps
Adjustable charge pump output current with an external resistor
Lock detection function
Phase matching circuit helps fast intermittent operation
Plastic 20-pin SSOP (shrink small outline) package
•
•
•
•
•
s
PACKAGE
20-pin, Plastic SSOP
(FPT-20P-M03)
This device contains circuitry to protect the inputs against damage due to high static voltages or electric fields. However, it is advised that normal precautions
be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
1
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
