DA1178.006
13 July, 2006
MAS1178
This is preliminary information on a
new product under development.
Micro Analog Systems Oy reserves
the right to make any changes
without notice.
IC FOR 10.00 – 20.00 MHz VCXO
Low Power
Wide Supply Voltage Range
Square Wave Output
Very High Level of Integration
•
Electrically Trimmable
•
Very Low Phase Noise
•
Low Cost
•
•
•
•
To build a VCXO only one additional component, a
crystal is needed.
DESCRIPTION
The MAS1178 is an integrated circuit well suited to
build VCXO for mobile communication. The
trimming is done by 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
Square wave output
APPLICATIONS
•
•
VCXO for mobile phones
VCXO for other telecommunications systems
BLOCK DIAGRAM
MAS1178
VC
OUT
DA
CLK
PV
VDD
6
Digital
VSS
X1
XO1
X2
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DA1178.006
13 July, 2006
PIN DESCRIPTION
Pin Description
Power Supply Voltage
Serial Bus Clock Input
Serial Bus Data Input
Programming Input
Voltage Control Input
Crystal Oscillator Output
Crystal/Varactor Oscillator Input
Power Supply Ground
Buffer Output
Symbol
VDD
CLK
DA
PV
VC
X2
X1
VSS
OUT
x-coordinate
182
645
418
876
215
1053
434
617
1218
y-coordinate
1317
1329
1329
1311
213
209
209
2267
1329
Note:
Because the substrate of the die is internally connected to GND, the die has to be connected to GND or
left floating. Please make sure that GND is the first pad to be bonded. Pick-and-place and all component
assembly are recommended to be performed in ESD protected area.
Note:
Pad coordinates are measured from the left bottom corner of the chip to the center of the pads. The
coordinates may vary depending on sawing width and location, however, distances between pads are accurate.
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Note 1:
Not valid for programming pin PV
Symbol
V
DD
- V
SS
V
IN
P
MAX
T
OP
T
ST
Min
-0.3
V
SS
-0.3
-35
-55
Max
6.0
V
DD
+ 0.3
100
85
150
Unit
V
V
mW
o
C
o
C
Note
1)
RECOMMENDED OPERATION CONDITIONS
Parameter
Supply Voltage
Supply Current
Operable Temperature
Storage Temperature
Symbol
V
DD
I
dd
T
C
T
S
Conditions
Vdd = 2.8 Volt
Relative humidity =
15%…70%
-30
-5
Min
2.7
Typ
2.8
2.3
Max
5.5
+85
+40
Unit
V
mA
o
C
o
C
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DA1178.006
13 July, 2006
ELECTRICAL CHARACTERISTICS
Parameter
Frequency Range
Voltage Control Range
Voltage Control Sensitivity
Output Voltage (10 pF, Vdd 2.7V)
Output Voltage (10 pF, Vdd 5.0V)
Rise and Fall Time (10-50pF)
Output Symmetry
Trimming CDAC (6 Bit)
Startup Time
C
X1
T
START
C20
2
40-60
C20 + 12
Symbol
f
o
V
C
V
CSENS
V
out
V
out
Min
10.00
0
30
2.3
4.5
10
Typ
Max
20.00
Vdd
ppm/V
Vpp
Vpp
ns
%
pF
ms
2)
1)
Unit
MHz
Note
Note 1:
Vc sense is depending on the crystal used.
Note 2:
Typ. C20 = 5 pF
IC OUTLINES
VDD
DA
CLK
PV
OUT
1542 µm
MAS1178
VC
X1
VSS
X2
Die map reference
1430 µm
Note 1:
MAS1178 pads are round with 80 µm diameter at opening.
Note 2:
Pins PV, CLK and DA must not be connected in VCXO module end-user application.
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DA1178.006
13 July, 2006
SAMPLES IN SB20 DIL PACKAGE
1
2
20
VDD
19
18
17
DA
MAS1178
YYWW
XXXXX.X
VC
3
4
X1
5
GND
6
X2
7
8
9
10
16
CLK
15
14
13
12
PV
11
OUT
Top marking:
YYWW = Year, Week
XXXXX.X = Lot number
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DA1178.006
13 July, 2006
ORDERING INFORMATION
Product Code
Product
Package
Comments
Die size 1430 x 1542 µm
Die size 1430 x 1542 µm
MAS1178ATC1
IC FOR VCXO
EWS tested wafers 400 µm
MAS1178ATF1
IC FOR VCXO
EWS tested wafers 254 µm
MAS1178
IC FOR VCXO
SMD Package T.B.D.
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
Tel. +358 9 80 521
Fax +358 9 805 3213
http://www.mas-oy.com
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. Micro Analog Systems Oy assumes no responsibility for the use of any circuits
shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no
claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and
Micro Analog Systems Oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or
modification.
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