MAS9278 Datasheet, PDF (1/5 Pages) Micro Analog systems – IC for 10.00 - 30.00 MHz VCXO

DA9278.004
13 July 2006
MAS9278
IC for 10.00 – 30.00 MHz VCXO
• Low Power
• Wide Supply Voltage Range
• True Sine Wave Output
• Very High Level of Integration
• Integrated Varactor
• Electrically Trimmable
• Very Low Phase Noise
• Low Cost
DESCRIPTION
The MAS9278 is an integrated circuit well suited to
build VCXO for mobile communication. The crystal
offset trimming is done through a serial bus and
the calibration information is stored in an internal
PROM.
FEATURES
• Very small size
• Minor current draw
• Wide operating temperature range
• Phase noise <-130 dBc/Hz at 1 kHz offset
• Programmable Vc sensitivity
BLOCK DIAGRAM
To build a VCXO only one additional component, a
crystal, is needed.
APPLICATIONS
• VCXO for mobile phones
• VCXO for other telecommunications systems
• Replacement for TCXO modules
VC
DA
CLK
PV
VDD
2
Digital
5
2
VSS
MAS9278
OUT
X1
X2
XO1
1 (5)