IC FOR 10.00 - 52.00 MHz VCTCXO
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DA9279.003 13 July 2006
MAS9279
IC FOR 10.00 – 52.00 MHz VCTCXO
• • • • • • •
DESCRIPTION
The MAS9...
Description
www.DataSheet4U.com
DA9279.003 13 July 2006
MAS9279
IC FOR 10.00 – 52.00 MHz VCTCXO
DESCRIPTION
The MAS9279 is an integrated circuit well suited to build high end VCTCXO for telecommunication. The trimming is done through a serial bus and the calibration information is stored in an internal PROM. This means no rework for trimming is needed. To build a VCTCXO only crystal is required in addition to MAS9279. The compensation method is fully analog, working continuously without generating any steps or other interference.
Fourth Order Compensation Frequency Stability +/- 0.3 ppm Wide Frequency Range Very Low Phase Noise Low Voltage Minimum Operating Temperature –40 ° C Tri State CMOS Output
FEATURES
Very small size Minimal current consumption Wide operating temperature range Very low phase noise Programmable VC-sensitivity Minimum operating temperature –40 ° C Oscillator frequency output f0/2 version available
APPLICATIONS
VCTCXO for high end telecommunications systems TCXO for high end telecommunication systems
BLOCK DIAGRAM
DA CLK PV
Fourth Term CUB INF SENS LIN
4
f(T)
5 3 8
TE1
Σ
T Vref TMux
TE2
f(T)
VC
CDAC1
6 4
VDD
CDAC2
OUT
VSS
X2
X1
1 (10)
DA9279.003 13 July 2006
PIN DESCRIPTION
Pin Description Power Supply Voltage Programming Input Serial Bus Clock Input Serial Bus Data Input Temperature Output Test Multiplexer Output Voltage Control Input Crystal Oscillator Output Crystal/Varactor Oscillator Input Power Supply Ground...
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