DA6720.000
2 January 2007
MAS6720
This is advance information on a new
product under development. Micro Analog
Systems Oy reserves the right to make any
changes without notice.
IC FOR 32.768 kHz XO
Low Cost
Low Supply Voltage
Low Current Consumption
CMOS Output
•
Very High Level of Integration
•
•
•
•
DESCRIPTION
MAS6720 is an integrated circuit well suited to
make a fundamental crystal oscillator (XO): only
one additional component, a crystal, is needed.
MAS6720 includes an oscillator and an output
buffer circuits.
FEATURES
•
•
•
•
Very small size
Minimum current draw
Wide operating temperature range
CMOS output
APPLICATIONS
•
•
•
XO for wrist watches
XO for clocks
XO for battery operated systems
BLOCK DIAGRAM
VDBUFF
MAS6720
OUT
VDD
VSS
XIN
XOUT
Figure 1. Block diagram of MAS6720.
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DA6720.000
2 January 2007
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
DD
- V
SS
V
IN
P
MAX
T
OP
T
ST
Min
-0.3
V
SS
-0.3
-40
-55
Max
6.0
V
DD
+ 0.3
120
85
150
Unit
V
V
mW
o
C
o
C
Note
Note:
Stresses beyond the values listed may cause a permanent damage to the device. The device may not
operate under these conditions, but it will not be destroyed
RECOMMENDED OPERATION CONDITIONS
Parameter
Supply Voltage
Current Consumption
Crystal Load Capacitance
Symbol
V
DD
I
DD
C
L
Conditions
Min
1.2
Typ
1.5
1.6
12.5
Max
3.6
8.0
Unit
V
µA
pF
Note
1)
2)
Note 1:
If V
DD
= 3.6V, it is recommended to connect 1nF capacitor to V
DD
pin.
Note 2:
For other load capacitance options contact to Micro Analog Systems Oy.
ELECTRICAL CHARACTERISTICS FOR 1.5V SUPPLY VOLTAGE
T
A
= -40° to +85° typical values at T
A
= +27°C, V
DD
= 1.5V, f
O
= 32.768 kHz, Output Load = 15 pF, unless otherwise specified.
C
C,
Parameter
Output Load
Crystal Frequency Range
when Output Load is Maximum 35pF
Output Voltage Range
Rise and Fall Time
Start-up Time
Duty Cycle
Symbol
Min
Typ
15
Max
35
100.00
V
DD
4
60
Unit
pF
kHz
V
ns
s
%
Note
f
o
30.00
0
32.768
V
D,BUFF
3
0.5
1)
T
START
40
48-52
Note 1:
The output voltage is controlled with V
D,BUFF
. Basically V
OUT
= V
D,BUFF
and V
D,BUFF
can be varied between
0
≤
V
D,BUFF
≤
V
DD
.
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DA6720.000
2 January 2007
PIN DESCRIPTION
Pin Description
Power Supply Voltage
Power Supply for Output Buffer
Crystal Oscillator Input
Crystal Oscillator Output
Power Supply Ground
Buffer Output
Symbol
VDD
VDBUFF
XIN
XOUT
VSS
OUT
x-coordinate
141
141
450
303
588
588
y-coordinate
569
376
141
141
379
594
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.
IC OUTLINES
MAS6720
OUT
VDD
VD
BUFF
VSS
720 um
XOUT
XIN
Die Map Reference
730 um
Figure 2. IC outlines.
Note1:
Die map reference is the actual left bottom corner of the sawn chip.
Note2:
See coordinates in pin description.
Note3:
Die dimensions include 80
µm
scribes for both sides.
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DA6720.000
2 January 2007
ORDERING INFORMATION
Product Code
MAS6720A1TG00
Output
Frequency
f
o
Crystal Load (pF)
12.5
Wafer thickness
215 µm
Comments
Tested, wafer
Contact Micro Analog Systems Oy for crystal loads between 7.0 pF and 16.0 pF.
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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