Selectable /16 to x32 frequency divider/multiplier.
3.3V operation.
Available in 16-Pin TSSOP or 16-pin 3x3mm QFN
GREEN/RoHS compliant packages.
PIN CONFIGURATION
(Top View)
VDD
XIN
XOUT
SEL3^
SEL2^
OE
GND
GND
1
2
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9
SEL0^
SEL1^
GND
CLKC
VDD
CLKT
GND
GND
PL602-3x
SEL0^ / VDD*
10
3
4
5
6
7
8
TSSOP-16L
VDD / GND*
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 multi-
plying the input crystal frequency up to 32x. The very
low jitter makes them ideal for a wide range of applica-
tions, including SONET/SDH and FEC. They accept
fundamental parallel resonant mode crystals from
12MHz to 25MHz.
XIN
XOUT
SEL3^
SEL2^
OE
12
13
14
15
16
11
9
8
7
6
5
SEL1^
GND
CLKC
VDD
CLKT
PL602-3x
1
2
3
4
GND
GND
GND
BLOCK DIAGRAM
SEL[3:0]
OE
Oscillator
Amplifier
w/
integrated
load cap.
PLL
(Phase
Locked
Loop)
^:
*:
QFN-16L
Internal pull -up
On QFN package, PL 602-35/-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 d etails.
Note: On QFN package there is a large center pad for thermal relief.
This pad needs to be connected to GND.
CLKC
CLKT
OUTPUT ENABLE LOGICAL LEVELS
Part #
OE
0 (Default)
1
0
1 (Default)
State
Output enabled
Tri-state
Tri-state
Output enabled
XIN
XOUT
PLL by-pass
PL602-38
PL602-3x
PL602-35
PL602-37
PL602-39
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
GND
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
Selected Multiplier
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
FREQUENCY SELECTION TABLE
SEL3
0
0
0
1
1
1
1
1
1
1
SEL2
0
1
1
0
0
0
1
1
1
1
SEL1
1
1
1
0
1
1
0
0
1
1
SEL0
1
0
1
1
0
1
0
1
0
1
Note:
SEL0 is not available (always “1”) for PL602-35 and PL602-38 in 3x3mm package
PIN DESCRIPTIONS PL602-35 and PL602-38 (see next page for PL602-37/-39)
Name
XIN
XOUT
OE
GND
CLKT
CLKC
SEL0
SEL1
SEL2
SEL3
VDD
TSSOP
Pin number
2
3
6
7,8,9,10,14
11
13
16
15
5
4
1, 12
3x3mm QFN
Pin number
12
13
16
1,2,3,4,8,11
5
7
Not available
9
15
14
6,10
Type
I
I
I
P
O
O
I
I
I
I
P
+3.3V power supply.
Multiplier selector pins. These pins have an internal pull-
up that will default SEL to ‘1’ when not connected to
GND.
Description
Crystal input (See Crystal Specification on page 4)
Crystal output (See Crystal Specification on page 4 )
Output enable pin (See OE logic state table on page 1)
Ground connection
LVPECL True output
LVPECL Complementary output
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 2
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
PIN DESCRIPTIONS PL602-37/-39 (see previous page for PL602-35/-38)
Name
XIN
XOUT
OE
GND
CLKT
CLKC
SEL0
SEL1
SEL2
SEL3
VDD
TSSOP
Pin number
2
3
6
7,8,9,10,14
11
13
16
15
5
4
1, 12
3x3mm QFN
Pin number
12
13
16
1,2,3,4,8
5
7
10
9
15
14
6,11
Type
I
I
I
P
O
O
I
I
I
I
P
+3.3V power supply.
Multiplier selector pins. These pins have an internal pull-up
that will default SELx to ‘1’ when not connected to GND.
Description
Crystal input. See Crystal Specification on page 4.
Crystal output. See Crystal Specification on page 4.
Output enable pin (see OE logic state table on page 1).
Ground.
LVDS True output for PL602-39.
No Connect for PL602-37
LVDS Complementary output for PL602-39
LVCMOS out for PL602-37
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 3
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
Input Voltage, dc
Output Voltage, dc
Storage Temperature
Ambient Operating Temperature*
Junction Temperature
Lead Temperature (soldering, 10s)
ESD Protection, Human Body Model
2.5
SYMBOL
V
DD
V
I
V
O
T
S
T
A
T
J
-0.5
-0.5
-65
-40
MIN.
MAX.
4.6
V
DD
+0.5
V
DD
+0.5
150
85
125
260
UNITS
V
V
V
C
C
C
C
kV
Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the device and affect product
reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other conditions above the operational limits noted in this
specification is not implied. *
Note:
Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only.
2. Crystal Specifications
PARAMETERS
Crystal Resonator Frequency
Crystal Loading Rating
Recommended ESR
SYMBOL
F
XIN
C
L (x ta l)
R
E
AT cut
CONDITIONS
Parallel Fundamental Mode
MIN.
12
20
30
TYP.
MAX.
25
UNITS
MHz
pF
Ω
3. General Electrical Specifications
PARAMETERS
Supply Current,
Dynamic (with
Loaded Outputs)
Operating
Voltage
Output Clock
Duty Cycle
Short Circuit
Current
SYMBOL
I
DD
CONDITIONS
LVPECL/LVDS/
24MHz< F
OUT
<96MHz
LVCMOS
96MHz< F
OUT
<800MHz
2.97
@ 50% V
DD
(LVCMOS)
@ 1.25V (LVDS)
@ V
DD
– 1.3V (LVPECL)
45
45
45
50
50
50
50
F
OUT
<24MHz
MIN.
TYP.
MAX.
60/28/15
65/45/30
100/80/40
3.63
55
55
55
V
%
mA
mA
UNITS
V
DD
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 4
PL602-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier XO
Universal Low Phase Noise IC’s
4. Jitter Specifications
PARAMETERS
Period Jitter,
RMS
Period Jitter,
Peak-to-Peak
Integrated Jitter,
RMS
CONDITIONS
With capacitive decoupling
between V
DD
and GND.
Over 10,000 cycles.
With capacitive decoupling
between V
DD
and GND.
Over 10,000 cycles.
Integrated 12 kHz to 20 MHz
FREQUENCY
155.52MHz
622.08MHz
155.52MHz
622.08MHz
155.52MHz
622.08MHz
MIN.
TYP.
4.3
5.0
35
45
2.4
2.5
MAX.
UNITS
ps
ps
ps
5. Phase Noise Specifications
PARAMETERS
Phase Noise,
relative to carrier
(typical)
FREQUENCY
155.52MHz
622.08MHz
@10Hz
-63
-52
@100Hz
-93
-83
@1kHz
-117
-105
@10kHz
-126
-113
@100kHz
-123
-110
UNITS
dBc/Hz
6. LVCMOS Electrical Characteristics
PARAMETERS
Output drive current
Output Clock Rise/Fall Time
SYMBOL
I
OH
I
OL
CONDITIONS
V
OH
= V
DD
-0.4V, V
DD
=3.3V
V
OL
= 0.4V, V
DD
= 3.3V
0.3V ~ 3.0V with 15 pF load
MIN.
10
10
2.4
TYP.
MAX.
UNITS
mA
mA
ns
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 •
中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
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