PL502-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier VCXO
Universal Low Phase Noise ICs
FEATURES
1
XIN
2
XOUT
3
SEL3^
4
SEL2^
5
OE
6
VCON
7
GND
8
9
SEL[3:0]
XOUT
VDD
CLKT
GND
GND
VDD / GND*
SEL0^ / VDD*
SEL1^
12
11
10
9
13
8
GND
SEL3^
14
7
CLKC
SEL2^
15
6
VDD
OE
16
5
CLKT
2
3
4
GND
VCON
1
GND
PL502-3x
QFN-16L
OE
XIN
CLKC
XOUT
PL502-38
PLL
(Phase
Locked
Loop)
GND
Internal pull-up
On 3x3 package, PL502-35/-38 do not have SEL0 available: Pin 10
is VDD, pin 11 is GND. However, PL502 -37/-39 have SEL0 (pin 10),
and pin11 is VDD. See pin assignment table for details.
Part #
Oscillator
Amplifier
w/
integrated
varicaps
SEL1^
OUTPUT ENABLE LOGICAL LEVELS
BLOCK DIAGRAM
VCON
SEL0^
TSSOP-16L
^:
*:
DESCRIPTION
The PL502-35 (LVPECL with inverted OE), PL502-37
(LVCMOS), PL502-38 (LVPECL), and PL502-39
(LVDS) are high performance and low phase noise
VCXO IC chips. They provide phase noise performance as low as –125dBc at 10kHz offset (at
155MHz), by multiplying the input crystal frequency up
to 32x. The wide pull range (±200 ppm) and very low
jitter make them ideal for a wide range of applications,
including SONET/SDH and FEC. They accept fundamental parallel resonant mode crystals from 12MHz to
25MHz.
1
6
1
5
1
4
1
3
1
2
1
1
1
0
GND
VDD
PL 502-3x
Selectable 750kHz to 800MHz range
Low phase noise output (@ 10kHz frequency offset, -142dBc/Hz for 19.44MHz, -125dBc/Hz for
155.52MHz, -115dBc/Hz for 622.08MHz)
LVCMOS (PL502-37), LVPECL (PL502-35 and
PL502-38) or LVDS (PL502-39) output
12MHz to 25MHz crystal input
No external load capacitor or varicap required.
Output Enable selector
Wide pull range (±200 ppm)
Selectable /16 to x32 frequency divider/multiplier
3.3V operation
Available in 16-Pin TSSOP or 16-pin 3x3mm QFN
GREEN/RoHS compliant packages
XIN
PIN CONFIGURATION
(Top View)
CLKC
CLKT
PL502-35
PL502-37
PL502-39
OE
0 (Default)
State
Output enabled
1
Tri-state
0
Tri-state
1 (Default)
Output enabled
OE input: Logical states defined by LVPECL levels for PL502-38
Logical states defined by LVCMOS levels for PL502-37/-39
PLL by-pass
PL502-3x
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 4/15/13 Page 1
PL502-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier VCXO
Universal Low Phase Noise ICs
FREQUENCY SELECTION TABLE
SEL3
SEL2
SEL1
SEL0
Selected Multiplier
0
0
1
1
Fin x 32
0
1
1
0
Fin / 8
0
1
1
1
Fin x 2
1
0
0
1
Fin / 2
1
0
1
0
Fin / 16
1
0
1
1
Fin x 4
1
1
0
0
Fin / 4
1
1
0
1
Fin x 8
1
1
1
0
Fin x 16
1
1
1
1
No multiplication
Note: SEL0 is not available (always “1”) for PL502-35 and PL502-38 in 3x3mm package
PIN DESCRIPTIONS PL502-35 and PL502-38 (see next page for PL502-37/-39)
TSSOP
Pin number
3x3mm QFN
Pin number
Type
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 enable pin (See OE logic state table on page 1)
VCON
7
1
I
Voltage Control input
GND
8,9,10,14
2,3,4,8,11
P
Ground connection
CLKT
11
5
O
LVPECL True output
CLKC
13
7
O
LVPECL Complementary output
SEL0
16
Not available
I
SEL1
15
9
I
SEL2
5
15
I
SEL3
4
14
I
VDD
1, 12
6,10
P
Name
Description
Multiplier selector pins. These pins have an internal pull up that will default SEL to ‘1’ when not connected to
GND.
+3.3V power supply.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 4/15/13 Page 2
PL502-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier VCXO
Universal Low Phase Noise ICs
PIN DESCRIPTIONS PL502-37/-39 (see previous page for PL502-35/-38)
Name
TSSOP
Pin number
3x3mm QFN
Pin number
Type
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 enable pin (see OE logic state table on page 1).
VCON
7
1
I
Voltage Control input.
GND
8,9,10,14
2,3,4,8
P
Ground.
CLKT
11
5
O
LVDS True output for PL502-39
No Connect for PL502-37
CLKC
13
7
O
LVDS Complementary output for PL502-39
LVCMOS out for PL502-37
SEL0
16
10
I
SEL1
15
9
I
SEL2
5
15
I
SEL3
4
14
I
VDD
1, 12
6,11
P
Description
Multiplier selector pins. These pins have an internal pull up that will default SELx to ‘1’ when not connected to
GND.
+3.3V power supply.
ELECTRICAL SPECIFICATIONS
1. Absolute Maximum Ratings
PARAMETERS
Supply Voltage
SYMBOL
MIN.
V DD
MAX.
UNITS
4.6
V
Input Voltage, dc
VI
-0.5
V DD +0.5
V
Output Voltage, dc
VO
-0.5
V DD +0.5
V
Storage Temperature
TS
-65
150
C
Ambient Operating Temperature*
TA
-40
85
C
Junction Temperature
TJ
125
C
Lead Temperature (soldering, 10s)
260
C
ESD Protection, Human Body Model
2.5
kV
Exposure of the device under conditions beyond the limits specified by Maximum R atings 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 dev ice at these or any other
conditions above the operational limits not ed in this specification is not implied.
* Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade on ly.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 4/15/13 Page 3
PL502-35/-37/-38/-39
750kHz – 800MHz Low Phase Noise Multiplier VCXO
Universal Low Phase Noise ICs
2. Crystal Specifications
PARAMETERS
Crystal Resonator Frequency
Crystal Loading Rating
SYMBOL
CONDITIONS
MIN.
F XIN
Parallel Fundamental Mode
12
C L (xtal)
Crystal Pullability
Recommended ESR
At VCON = 1.65V
TYP.
MAX.
UNITS
25
MHz
9.5
pF
C 0 /C 1 (xtal)
AT cut
250
-
RE
AT cut
30
Ω
Note: Crystal Loading rating: 9.5pF is the loading the crystal sees from the VCXO chip at VCON = 1.65V. It is assumed that the cr ystal will be at nominal frequency at this load. If the crystal requires more load to be at nominal frequency, the additiona l load must be added externally. This however
may reduce the pull range.
3. Voltage Control Crystal Oscillator
PARAMETERS
SYMBOL
VCXO Stabilization Time *
T VCXOSTB
CONDITIONS
MIN.
TYP.
From power valid
VCXO Tuning Range
F XIN = 12 – 25MHz;
XTAL C 0 /C 1 < 250
0V VCON 3.3V
CLK output pullability
VCON=1.65V, 1.65V
MAX.
UNITS
10
ms
500
ppm
200
VCXO Tuning Characteristic
ppm
150
Pull range linearity
ppm/V
10
VCON pin input impedance
0V VCON 3.3V, -3dB
VCON modulation BW
%
2000
kΩ
10
kHz
Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
4. General Electrical Specifications
PARAMETERS
SYMBOL
CONDITIONS
Supply Current,
Dynamic (with
Loaded Outputs)
I DD
F OUT
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