FD7745T Pletronics, Inc., FD7745T Datasheet - Page 10

• Manufacturer Part Number: FD7745T
• Description: Fd7t Series Multi-output Cmos Clock Oscillator
• Manufacturer: Pletronics, Inc.

(1) 10,000 cycles
(2) Jitter depends on the device configuration. Data is taken under the following conditions: 1-PLL; 27MHz Crystal, Out2 and Out3
are 27MHz (measured at Out2). 4-PLL; 27MHz Crystal, Out2 and Out3 are 27MHz (measured at Out2). Out4 is 16.384MHz, Out5 is
74.25MHz, Out6 and Out7 are 48MHz.
Frequency Tolerance:
For the FD7x15T and the FD7x10T devices, Pletronics recommends that the tight
tolerance be required on the PLL outputs only. In this case the reference frequency
output would only achieve ±25ppm tolerance. This will reduce the cost of the device.
Item
Output Skew
LVCMOS Output Parameters for V
Output High, V
Output Low, V
Rise & Fall Time
Output Symmetry
Peak-to-Peak Jitter
Cycle-to-Cycle Jitter
Output Skew
VCXO Function
Vcontrol Input Range Usable
Vcontrol Input Range Allowed
Pull Ability specified in the P.N.
Linearity
- Direct connect to Vcontrol
- Limit current to
www.pletronics.com
DDOUT
DDOUT
(1)(2)
+ _
= 1.8V
(1)(2)
= 1.8V
3mA
DDOUT
425-776-1880
Min
-1.0
-10
1.6
1.4
1.1
0.5
0.0
45
--
--
--
--
--
--
--
--
--
--
--
= 1.8v
V
“L” Version
DD
Max
160
140
190
120
170
160
+10
V
0.1
0.3
0.6
0.7
4.0
60
55
60
- 0.5V
--
--
--
DD
FD7T Series Multi-Output
CMOS Clock Oscillator
Unit
pS
pS
pS
pS
nS
pS
pS
pS
pS
%
%
V
V
V
V
V
V
V
V
Condition
OUT1 to OUT2
OUT3 to OUT7
I
I
I
I
I
I
V
at 50% point of V
1 PLL Switching
4 PLLs Switching
1 PLL Switching
4 PLLs Switching
OUT1 to OUT2
OUT3 to OUT7
The slope is positive
The slope is positive
Recommend >=1K ohm to Vcontrol
OH
OH
OH
OH
OH
OH
DDOUT
= -0.1 mA
= -4.0 mA
= -8.0 mA
= +0.1 mA
= +4.0 mA
= +8.0 mA
= 1.8v, 20 - 80%, 10pF Load
DDOUT
May 2008
10