MAS9278 MAS, MAS9278 Datasheet

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MAS9278

Manufacturer Part Number
MAS9278
Description
IC for 10.00 - 30.00 MHz VCXO
Manufacturer
MAS
Datasheet
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
BLOCK DIAGRAM
Very small size
Minor current draw
Wide operating temperature range
Phase noise <-130 dBc/Hz at 1 kHz offset
Programmable Vc sensitivity
CLK
VDD
DA
VC
PV
VSS
Digital
2
5
2
X1
IC for 10.00 – 30.00 MHz VCXO
APPLICATIONS
XO1
To build a VCXO only one additional component, a
crystal, is needed.
X2
VCXO for mobile phones
VCXO for other telecommunications systems
Replacement for TCXO modules
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
MAS9278
OUT
MAS9278
13 July 2006
DA9278.004
1 (5)

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MAS9278 Summary of contents

Page 1

... 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 • ...

Page 2

PIN DESCRIPTION Pin Description Power Supply Voltage Serial Bus Data Input Serial Bus Clock Input Programming Input Voltage Control Input Crystal Oscillator Output Power Supply Ground Crystal/Varactor Oscillator Input Buffer Output Note: Because the substrate of the die is internally ...

Page 3

... CLK VDD Die map reference Note 1: MAS9278 pads are round with 80 µm diameter at opening. Note 2: Pins CLK and DA can either be connected to VSS or left floating and pin PV can either be connected to VDD or left floating in VCXO module end-user application. Note 3: Die map reference is the actual left bottom corner of the sawn chip. ...

Page 4

SAMPLES IN SB20 DIL PACKAGE VDD 20 19 CLK 18 Top marking YYWW = Year, Week XXXXX.X = Lot number 16 OUT GND 15 14 ...

Page 5

... ORDERING INFORMATION Product Code Version MAS9278ATG1 A MAS9278A A MAS9278B1TG00 B See DAE9278 page 4 for definition of versions. Please contact Micro Analog Systems Oy for other wafer thickness options. LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O. Box 51 FIN-02771 Espoo, FINLAND NOTICE Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products ...

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