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PDF PL620-89 Datasheet ( Hoja de datos )

Número de pieza PL620-89
Descripción Low Phase Noise XO
Fabricantes Micrel Semiconductor 
Logotipo Micrel Semiconductor Logotipo

Total 6 Páginas
		
PL620-89 Hoja de datos, Descripción, Manual
PL620-88/-89
Low Phase Noise XO (9.5-65MHz Output)
FE AT UR E S
Crystal input range: 19MHz to 65MHz
Output range: 9.5MHz 65MHz
Very low phase noise and jitter
Complementary outputs:
o LVPECL (PL620-88)
o LVDS (PL620-89)
Supports 2.5V or 3.3V Power Supply.
Available in 16 pin TSSOP GREEN/RoHS
compliant package.
PIN CONFIGURATION
VDD
XIN
XOUT
DNC
S2^
OE
DNC
GND
1
2
3
4
5
6
7
8
16 DNC
15 DNC
14 GNDBUF
13 QBAR
12 VDDBUF
11 Q
10 GNDBUF
9 GND
TSSOP-16L
Note: ^ denotes internal pull up
DESCRIPTION
The PL620-88 (LVPECL) and PL620-89 (LVDS) are
XO ICs specifically designed to work with
fundamental or 3rd OT crystals between 19MHz and
65MHz. The selectable divide by two feature extends
the output range from 9.5MHz to 65MHz. They
require very low current into the crystal resulting in
better overall stability.
OUTPUT ENABLE LOGIC TABLE
Part Number
OE
State
PL620-88
PL620-89
0 (Default)
1
0
1 (Default)
Output enabled
Tri-state
Tri-state
Output enabled
BLOCK DIAGRAM
Oscillator
X+ Amplifier
X-
O
E
Q
Q
S2
OUTPUT FREQUENCY DIVIDE BY
TWO SELECTOR (S2)
S2 Output
0
1(Default)
Intput/2
Input
Micrel Inc. • 2180 Fortune Drive • S an Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 4/28/09 Page 1

1 page

PL620-89 pdf
PL620-88/-89
Low Phase Noise XO (9.5-65MHz Output)
8. LVPECL Electrical Characteristics
PARAMETERS
SYMBOL
CONDITIONS
MIN MAX UNITS
Output High Voltage
Output Low Voltage
VOH
RL = 50Ω to (VDD 2V)
VDD 1.025
V
VOL (see figure)
VDD 1.620
V
9. LVPECL Switching Characteristics
PARAMETERS
SYMBOL
CONDITIONS
Clock Rise Time
Clock Fall Time
tr @20/80% - LVPECL
tf @80/20% - LVPECL
MIN TYP MAX UNITS
0.6 1.5
ns
0.5 1.5
ns
LVPECL Levels Test Circuit
OUT
VDD
50? 2.0V
LVPECL Output Skew
OUT
50%
OUT
50?
OUT
80%
50%
20%
OUT
tR
OUT
tSKEW
LVPECL Transistion Time Waveform
DUTY CYCLE
45 - 55%
55 - 45%
tF
Micrel Inc. • 2180 Fortune Drive • S an Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 4/28/09 Page 5

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