DA9270.008
11 September 2006
MAS9270
IC FOR 10.00 – 30.00 MHz VCTCXO
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DESCRIPTION
The MAS9270 is an integrated circuit well suited to
build VCTCXO for mobile communication.
Temperature calibration is achieved in three
calibration temperatures only. 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 additionally only crystal is
required. The compensation method is fully analog,
working continuously without generating any steps
or other interference.
Wide Supply Voltage Range
True Sine Wave Output
Very High Level of Integration
Electrically Trimmable
Very Low Phase Noise
Low Cost
Minimum Operating Temperature –40 °
C
FEATURES
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Very small size
Minor current draw
Wide operating temperature range
Phase noise <-120 dBc/Hz at 100Hz offset
Programmable VC-sensitivity
Minimum Operating Temperature –40 ° for
C
MAS9270Cxx3
APPLICATIONS
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VCTCXO for mobile phones
VCTCXO for other telecommunications
systems
BLOCK DIAGRAM
4
4
DA
CLK
PV
VC
CUB
INF
SENS
LIN
f(T)
MAS9270
TE1
4
Σ
f(T)
8
T
Vref
TMux
TE2
CDAC1
8
VDD
CDAC2
2
OUT
X2
X1
VSS
1 (9)
DA9270.008
11 September 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
Buffer Output
Symbol
VDD
PV
CLK
DA
TE1
TE2
VC
X1
X2
VSS
OUT
x-coordinate
166
420
979
1234
1488
1742
185
439
1357
1790
2046
y-coordinate
1430
1435
1441
1441
1441
1441
153
149
149
166
153
Note:
Because the substrate of the die is internally connected to GND, the die has to be connected to GND or
left floating. 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 Pin Voltage
Power Dissipation
Storage Temperature
Note 1:
Not valid for programming pin PV
Symbol
V
DD
- V
SS
P
MAX
T
ST
Min
-0.3
V
SS
-0.3
-55
Max
6.0
V
DD
+ 0.3
20
150
Unit
V
V
mW
o
C
Note
1)
RECOMMENDED OPERATION CONDITIONS
Parameter
Supply Voltage
Supply Current
Operating Temperature
Storage Temperature
Crystal Pulling Sensitivity
Crystal Load Capacitance
Symbol
V
DD
I
CC
T
OP
T
S
S
C
L
Conditions
Vdd = 2.8 Volt
Relative humidity =
15%…70%
-30
-45
30
10
Min
2.7
Typ
2.8
Max
5.5
1.8
+85
+40
Unit
V
mA
o
C
o
C
ppm/pF
pF
Note
1)
2)
Note 1:
Minimum Supply Voltage 2.6 V for MAS9270Cxx2 version.
Note 2:
Minimum Operating Temperature –40 ° for MAS9270Cxx3 version.
C
2 (9)
DA9270.008
11 September 2006
ELECTRICAL CHARACTERISTICS
(recommended operation conditions)
Parameter
Frequency Range
Voltage Control Range
Voltage Control Sensitivity (VCR = 0)
Voltage Control Sensitivity (VCR = 1)
Frequency vs. Supply Voltage
Frequency vs. Load Change
Output Voltage (10kΩ // 10 pF)
Compensation Range ± 2.5 ppm
Compensation Range ± 2.0 ppm
Compensation Range ± 2.5 ppm
Compensation Range Linear Part
Compensation Inflection Point
Compensation Range Cubic Part
Compensation CDAC1 (7 Bit)
Compensation CDAC2 (2 Bit)
Start up Time
Symbol
f
o
V
C
V
CSENS
V
CSENS
df
o
df
o
V
out
T
C
T
C
T
C
a1
INF
a3
C
X1
C
X2
T
START
Min
10.00
0
9
4
Typ
Max
30.00
Vdd
15
8
±0.2
±0.2
Unit
MHz
V
ppm/V
ppm/V
ppm
ppm
Vpp
o
o
o
Note
1)
2)
3)
1.0
-30
-25
-40
-0.7
25
95
C10
C20
2
C10 + 18
C20 + 4
85
75
85
0.0
31
C
C
C
C
2
3
4)
ppm/K
o
ppm /K
pF
pF
ms
5)
6)
Note 1:
default
Note 2:
VDD +/- 5%
Note 3:
R=10 kohm +/- 10%, C=10 pF +/- 10%
Note 4:
MAS9270Cxx3
Note 5:
typ C10 = 13 pF
Note 6:
typ C20 = 6 pF (varactor capacitance at 1.8 V 12 pF)
IC OUTLINES
VDD
PV
CLK
DA
TE1
TE2
1584 µm
MAS9270
VC
X1
X2
VSS
OUT
Die map reference
2204 µm
Note 1:
MAS9270 pads are round with 80 µm diameter at opening.
Note 2:
Pins CLK and DA can either be connected to VSS or left floating, pin PV can either be connected to
VDD or left floating and pin TE1 must be left floating in VCTCXO module end-user application.
Note 3:
Die map reference is the actual left bottom corner of the sawn chip.
3 (9)
DA9270.008
11 September 2006
SAMPLES IN SB20 DIL PACKAGE
1
2
3
20
OUT
19
18
GND
17
MAS9270
YYWW
XXXXX.X
TE2
4
TE1
5
DA
6
CLK
7
PV
8
VDD
9
10
16
X2
15
14
X1
13
12
VC
11
Top marking:
YYWW = Year, Week
XXXXX.X = Lot number
DEVICE OUTLINE CONFIGURATION
MSOP10
TE2
DA
CLK
PV
VDD
OUT
VSS
X2
X1
VC
Top View
C = product version
X = voltage version
Y = year
WW= week
9270
CX
YWW
4 (9)
DA9270.008
11 September 2006
PACKAGE (MSOP-10) OUTLINE
e
S
See Detail A
c
B
E1
E1
B
E
E
5-15 Degrees
L1
Detail A
A2
A
A1
D
L
G
M
A
A
0 - 8 Degrees
Gauge Plane
L2
Seating Plane
N
F
Land
Pattern
Recommendation
b1
(b)
Section B - B
c1
Symbol
A
A1
A2
b
b1
c
c1
D
E
E1
e
F
G
L
(Terminal length for
soldering)
L1
L2
M
N
S
Min
--
0.00
0.75
0.15
0.15
0.08
0.08
Nom
--
--
0.85
--
---
Max
1.10
0.15
0.95
0.30
0.25
0.23
0.18
Unit
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
mm
0.40
3.00 BSC
4.90 BSC
3.00 BSC
0.50 BSC
4.8
0.50
0.60
0.80
0.95 REF
0.25 BSC
0.41
1.02
0.50
mm
mm
mm
Mm
Dimensions do not include mold or interlead flash, protrusions or gate burrs.
Reference Standard : JEDEC MO-187 BA.
5 (9)
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