MAS1175(2000) Просмотр технического описания (PDF) - Micro Analog Systems Oy
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MAS1175 Datasheet PDF : 5 Pages
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This is preliminary information on a
new product under development.
Micro Analog Systems Oy reserves
the right to make any changes
without notice.
DA1175.004
17 August, 2000
MAS1175
IC FOR 10.00 – 20.00 MHz VCTCXO
• Low Cost
• Low Power
• Wide Supply Voltage Range
• True Sine Wave Output
• Very High Level of Integration
• Electrically Trimmable
• Very Low Phase Noise
DESCRIPTION
The MAS1175 is an integrated circuit well suited to
build VCTCXO for mobile communication. Only two
external components are needed. Temperature
calibration is achieved with three calibration points
only. The trimming is done by a serial bus and the
calibration information is stored in an internal
PROM.
To build a VCTCXO only two additional
components, a varactor and a crystal are needed.
The compensation method is fully analog. IC
compensation work is continuous without
generating any steps or other interferences.
FEATURES
• Very small size
• Minimum current draw
• Wide operating temperature range
• Phase noise <-130 dBc/Hz at 1 kHz offset
• VCTCXO for mobile phones
APPLICATIONS
• VCTCXO for other telecommunications
systems
BLOCK DIAGRAM
DA
CLK
PV
4
CUB
INF 4
SENS 4
f(T)
Σ
f(T)
LIN 8
VC
CDAC1 8
VDD
2
CDAC2
VSS
X2
MAS1175A
TE1
T
Vref TMux TE2
OUT
X1
1
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