Lo w -Fre q u e n c y Du a l Ec o n Os c illa t o r
The d ivid e r s e tting s , X a nd X , a re fa c tory p ro-
0
1
Ap p lic a t io n In fo rm a t io n
grammed. When placing an order for the DS1099, it is
required to specify X and X . If only one output is used,
P o w e r-S u p p ly De c o u p lin g
To achieve best results, it is highly recommended that
a decoupling capacitor is used on the IC power-supply
p ins . Typ ic a l va lue s of d e c oup ling c a p a c itors a re
0.01µF and 0.1µF. Use a high-quality, ceramic, sur-
face-mount capacitor, and mount it as close as possi-
0
1
it is recommended that the unused output be disabled.
The oscillator outputs are asynchronous. Since the
master oscillator and dividers are free running, even
when both outputs are disabled, the state of the output
when OE becomes active is unknown for up to half an
ble to the V and GND pins of the IC to minimize lead
CC
f
period. When OE is brought low, the output is
OUT
inductance.
enabled instantaneously. Likewise, if the output is dis-
abled while outputting the low half of a cycle, the out-
put instantaneously is forced high before the current
cycle is completed.
Ch ip To p o lo g y
TRANSISTOR COUNT: 4221
SUBSTRATE CONNECTED TO GROUND
P a c k a g e In fo rm a t io n
For the la te s t p a c ka g e outline informa tion, g o to
www.maxim-ic.com/DallasPackInfo.
Ord e rin g In fo rm a t io n (c o n t in u e d )
α
A
B
C
D
E
DIVISOR
20
f
OUT
1.048MHz
0.524MHz
0.262MHz
0.131MHz
65.50kHz
32.750kHz
16.375kHz
8.187kHz
4.093kHz
2.046kHz
1.023kHz
511.7Hz
255.8Hz
127.9Hz
63.96Hz
31.98Hz
16Hz
21
22
23
24
25
26
27
28
F
G
H
J
K
L
29
210
211
212
213
214
215
216
217
218
219
220
221
222
M
N
P
Q
R
S
T
8Hz
U
W
X
Y
Z
4Hz
2Hz
1Hz
0.5Hz
0.25Hz
Bra n d in g In fo rm a t io n
The package branding includes α and α on the top
0
1
of the package next to or below 1099.
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
6 _____________________Ma x im In t e g ra t e d P ro d u c t s , 1 2 0 S a n Ga b rie l Drive , S u n n yva le , CA 9 4 0 8 6 4 0 8 -7 3 7 -7 6 0 0
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
DALLAS [ DALLAS SEMICONDUCTOR ]
