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PL685-88 Schematic ( PDF Datasheet ) - Micrel

Teilenummer PL685-88
Beschreibung 19MHz to 800MHz Low Phase-Noise XO
Hersteller Micrel
Logo Micrel Logo 




Gesamt 6 Seiten
PL685-88 Datasheet, Funktion
(Preliminary) PL685-88
FE AT UR E S
19MHz to 800MHz Low Phase-Noise XO
PAD CONFIGURATION
< 0.5ps RMS phase jitter (12kHz to 20MHz) at
622.08MHz
30ps max peak to peak period jitter
8bit Switch Capacitor for ±50PPM crystal CLoad
tuning
о Load Capacitance Tuning Range: 8pF to 12pF
Ultra Low-Power Consumption
о < 90 mA @622MHz PECL output
о <10A at Power Down (PDB) Mode
Input Frequency:
о Fundamental Crystal: 19MHz to 40MHz
Output Frequency:
о 19MHz to 800MHz output.
Output types: LVPECL.
Programmable OE input polarity selection.
Power Supply: 3.3V, ±10%
Operating Temperature Ranges:
о Commercial: 0C to 70C
о Industrial: -40C to 85C
Available in Die or Wafer
DESCRIPTION
The PL685 is a Dual LC core monolithic IC clock,
capable of maintaining sub-1ps RMS phase jitter,
while covering a wide frequency output range up to
800MHz, without the use of external components.
The high performance and high frequency output is
achieved using a low cost fundamental crystal of
between 19MHz and 40 MHz. The PL685 is
designed to address the demanding requirements of
high performance applications such as Fiber
Channel, serial ATA, Ethernet, SAN, SONET/SDH,
etc.
65 mil
SCLK 9
8
Die ID
OE/PDB/
SDIO
DNC
10
11
GND_ANA
GND_DIG
GND_BUF
12
13
14
(0,0)
PL685
(1650,2250)
7
6 VDD_ANA
5 VDD_DIG
4 VDD_BUF
3 QB
2 VDD_BUF
1Q
DIE SPECIFICATIONS
Name
Size
Reverse side
Pad dimensions
Thickness
Value
65 x 88.6 mil
GND
80 micron x 80 micron
8 mils
OUTPUT ENABLE CONTROL
OE Select
(Programmable)
OE
State
0
0 (Default)
1
Output enabled
Tri-state
1 (Default)
0
1 (Default)
Tri-state
Output enabled
BLOCK DIAGRAM
OE/PDB
XIN/REF
XOUT
Xtal
Osc
(Default pre-programmed output path)
PD/CP
LF HF
LCVCOs
Pre-scalar
4/6
/2
Programmable Function
M Divider
(5 bit)
P Divider
(4 bit)
/2
Q
QB
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 06/24/11 Page 1






PL685-88 Datasheet, Funktion
(Preliminary) PL685-88
19MHz to 800MHz Low Phase-Noise XO
ORDERING INFORM ATION
For part ordering, please contact our Sales Department:
2180 Fortune Drive, San Jose, CA 95131, USA
Tel: (408) 944-0800 Fax: (408) 474-1000
PART NUMBER
The order number for this device is a combination of the following:
Part number, Package type, Thickness and Operating temperature range
Part Number
PL685-88 XX
Packaging Option
D = Die
W = Wafer
Temperature Range
C=Commercial (0°C to 70°C)
Order Number P/N
PECL
PL685-88DC
Output
Frequency Range
≤800MHz
Packaging Option
Waffle Pack (Die)
PL685-88WC
≤800MHz
Wafer
Micrel Inc., reserves the right to make changes in its products or specifications, or both at any time without notice. The in formation furnished by Micrel
is believed to be accurate and reliable. However, Micrel makes no guarantee or warranty c oncerning the accuracy of said information and shall not be
responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product.
LIFE SUPPORT POLICY: Micrel’s products are not authorized for use as critical components in life support devices or systems without the express
written approval of the President of Micrel Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 06/24/11 Page 6

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