pi6c10806 Pericom Semiconductor Corporation, pi6c10806 Datasheet - Page 5

• Manufacturer Part Number: pi6c10806
• Description: 1.8v/2.5v, 250mhz, Low Skew 1 6 Crystal To Lvcmos Clock Buffer
• Manufacturer: Pericom Semiconductor Corporation

Crystal Characteristic (link to "http://www.pericom.com/saronix" for more detailed crystal specifi cations)
Note: 1. ESR value is dependent upon frequency of oscillation
Application Notes
Crystal circuit connection
The following diagram shows PI6C10806 crystal circuit connection with a parallel crystal. For the C
crystal, it is suggested to use C1=18pF, C2=18pF. C1 and C2 can be adjusted to fi ne tune to the target ppm of
crystal oscillator according to different board layouts. R1=100Ω is strongly suggested.
Crystal Oscillator Circuit
AC Test Circuit Load
Parameters
OSC
FREQ
ESR
C
C
DRIVE
LOAD
SHUNT
(1)
MODE
[V
07-0201
DD
- V
V
DD
DDO
/2]
V
GND
DDO
Mode of Oscillation
Frequency
Equivalent Series Resistance
Load Capacitance
Shunt Capacitance
Operating Drive Level
Correlation Drive Level
[+V
[-V
Crystal (C
DDO
DDO
18pF
C2
/2]
/2]
Z = 50-Ohm
L
= 18pF)
18pF
C1
De scrip tion
R1
100Ω
Scope
1.8V/2.5V Low Skew 1:6 Crystal to LVCMOS Clock Buffer
Ohm
50-
5
Note:
V
DD
XTAL_IN
XTAL_OUT
/V
DDO
= 1.8V ± 0.2V,
2.5V ± 5%
Min
10
30
16
Fundamental
Typ
25
Max.
200
0.5
0.1
40
32
7
PS8823C
PI6C10806
L
=18pF
Units
MHz
Ohm
mW
mW
pF
pF
09/12/07