鈥?/div>
19MHz to 65MHz fundamental crystal input.
Output range: 9.5MHz 鈥?65MHz
Complementary outputs: PECL or LVDS output.
Selectable OE Logic (enable high or enable low).
Integrated variable capacitors.
Supports 2.5V or 3.3V Power Supply.
Available in 16 pin TSSOP package.
PIN CONFIGURATION
VDD
XIN
XOUT
DNC
S2
OE
1
2
16
15
DNC
DNC
GNDBUF
QBAR
VDDBUF
Q
GNDBUF
GND
ABV208x
3
4
5
6
7
8
14
13
12
11
10
9
DESCRIPTION
The ABV2088 (PECL) and ABV2089 (LVDS) are
VCXO ICs specifically designed to work with
fundamental crystals between 19MHz and 65MHz.
The selectable divide by two feature extends the
operation range from 9.5MHz to 65MHz. They
require very low current into the crystal resulting in
better overall stability. The OE logic feature allows
selection of enable high or enable low.
VCON
GND
OUTPUT SELECTION AND ENABLE
OE_SELECT
OE_CTRL
State
0
1 (Default)
BLOCK DIAGRAM
0
1 (Default)
0 (Default)
1
Tri-state
Output enabled
Output enabled
Tri-state
O
Q
VCON
X+
X-
Oscillator
Amplifier
with
Integrated
Varicaps
Q
Input selection: Bond to GND to set to 鈥?鈥? bond to VDD to set to 鈥?鈥?/div>
No connection results to 鈥渄efault鈥?setting through
internal pull-up/-down.
OE_CTRL:
Logical states defined by PECL levels if
OE_SELECT is 鈥?鈥?/div>
Logical states defined by CMOS levels if
OE_SELECT is 鈥?鈥?/div>
S2
OUTPUT FREQUENCY DIVIDE BY
TWO SELECTOR
S2
Output
ABV208X Block Diagram
0
1
Intput/2
Input
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001
www.Abracon.com
03/21/05 Page 1
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