Document
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
FE AT UR E S
PIN CONFIGURATION
Selectable 750kHz to 800MHz range. Low phase noise output
-127dBc/Hz for 155.52MHz @ 10kHz offset -115dBc/Hz for 622.08MHz @ 10kHz offset LVCMOS (PL602-37), LVPECL (PL602-35 and PL602-38) or LVDS (PL602-39) output. 12MHz to 25MHz crystal input. No external crystal load capacitors required. Output Enable selector. Selectable /16 to x32 frequency divider/multiplier.
3.3V operation. Available in 16-Pin TSSOP or 16-pin 3x3mm QFN
GREEN/RoHS compliant packages.
(Top View)
VDD XIN XOUT SEL3^ SEL2^ OE GND GND
1
1 6
2
1 5
PL602-3x
3
1 4
4
1 3
5
1 2
6
1 1
7
1 0
89
TSSOP-16L
SEL0^ SEL1^ GND CLKC VDD CLKT GND GND
XIN VDD / GND* SEL0^ / VDD* SEL1^
DESCRIPTION The PL602-35 (LVPECL with inverted OE), PL602-37 (LVCMOS), PL602-38 (LVPECL), and PL602-39 (LVDS) are high performance and low phase noise XO IC chips. They provide phase noise performance as low as –127dBc at 10kHz offset (at 155MHz), by multiplying the input crystal frequency up to 32x. The very low jitter makes them ideal for a wide range of applications, including SONET/SDH and FEC. They accept fundamental parallel resonant mode crystals from 12MHz to 25MHz.
XOUT SEL3^ SEL2^
OE
12 13
11 10
9 8
14
PL602-3x
7
15 6
16 5 123 4
GND CLKC VDD CLKT
GND GND GND GND
BLOCK DIAGRAM
SEL[3:0]
XIN XOUT
Oscillator Amplifier
w/ integrated load cap.
PLL (Phase Locked Loop)
PLL by-pass
OE CLKC
QFN-16L
^: Internal pull-up *: On QFN package, PL602-35/-38 do not have SEL0 available: Pin 10
is VDD, pin 11 is GND. However, PL602-37/-39 have SEL0 (pin 10), and pin11 is VDD. See pin assignment table for details. Note: On QFN package there is a large center pad for thermal relief.
This pad needs to be connected to GND.
CLKT OUTPUT ENABLE LOGICAL LEVELS
Part #
OE
State
PL602-3x
PL602-38 PL602-35 PL602-37 PL602-39
0 (Default) 1 0
1 (Default)
Output enabled Tri-state Tri-state Output enabled
OE input: Logical states defined by LVPECL levels for PL602-38 Logical states defined by LVCMOS levels for PL602-37/-39
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 03/07/2012 Page 1
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s FREQUENCY SELECTION TABLE
SEL3
SEL2
SEL1
SEL0
Selected Multiplier
0011 0110 0111 1001 1010 1011 1100 1101 1110 1111
Note: SEL0 is not available (always “1”) for PL602-35 and PL602-38 in 3x3mm package
Fin x 32 Fin / 8 Fin x 2 Fin / 2 Fin / 16 Fin x 4 Fin / 4 Fin x 8 Fin x 16 No multiplication
PIN DESCRIPTIONS PL602-35 and PL602-38 (see next page for PL602-37/-39)
Name
TSSOP Pin number
3x3mm QFN Pin number
Type
Description
XIN 2 12 I Crystal input (See Crystal Specification on page 4)
XOUT
3
13 I Crystal output (See Crystal Specification on page 4)
OE 6 16 I Output ena.