Model 520
Temperature Compensated Crystal Oscillator
FEATURES
•
•
•
•
•
•
•
•
•
•
Clipped Sine Wave Output
Optional Voltage Control for Frequency Tuning [VCTCXO]
2.5mmx2.0mm Surface Mount Package
Frequency Range 10 – 52 MHz [Standard Frequencies List Shown Below]
Fundamental Crystal Design
Frequency Stability, several options to choose from ±0.5ppm ~ ±2.5ppm
Operating Voltage, +1.8Vdc ~ +2.5Vdc
Operating Temperature to -40°C to +85°C
Tape & Reel Packaging Available
RoHS/Green Compliant (6/6)
APPLICATIONS
The Model 520 Temperature Compensated Crystal Oscillator (TCXO) is a quartz
based, clipped sine wave output, with optional frequency tuning, in a hermetically
sealed ceramic package. M520 is suitable for wireless communications, broadband access,
WLAN/WiMax/WIFI, portable equipment, test and measurement and mobile applications.
ORDERING INFORMATION
M
520
FREQUENCY IN MHz
SUPPLY VOLTAGE
M - indicates MHz and decimal point.
M = +1.8Vdc
N = +2.5Vdc
T = +2.8Vdc
R = +3.0Vdc
L = +3.3Vdc
3
[See table below for standard frequencies available.]
FREQUENCY TUNING (AFC)
T = TCXO (no AFC)
A = ± 5 ppm 4
FREQUENCY STABILITY *
05
10
15
20
25
=
=
=
=
=
±
±
±
±
±
OPERATING TEMPERATURE RANGE
0.5 ppm 1
1.0 ppm 2
1.5 ppm
2.0 ppm
2.5 ppm (std)
H = -10°C to +60°C
C = -20°C to +70°C
D = -30°C to +85°C (std)
I = -40°C to +85°C
* Frequency vs. Temperature Only
1] Only available with temperature range codes "H" and "C".
2] Only available with temperature range codes "H", "C" and "D".
3] Frequency is recorded with two leading digits before the ‘M’ and 4 significant digits after the ‘M’ (including zeros).
[Ex. XXMXXXX (10M0000), XXMXXXX (16M3840)]
4] See Electrical Characteristics for Control Voltage range per Supply Voltage selected.
Not all performance combinations and frequencies may be available.
Contact your local CTS Representative or CTS Customer Service for availability.
13.000000
16.367667
Document No. 008-0371-0
M520 Standard Frequencies
16.368000
19.200000
26.000000
16.369000
20.000000
38.400000
Page 1 - 4
www.ctscorp.com
40.000000
Rev. C
Model 520
TCXO/VCTCXO – Clipped Sine Wave
ELECTRICAL CHARACTERISTICS
PARAMETER
Maximum Supply Voltage
Maximum Control Voltage
Storage Temperature
Frequency Range
Frequency Stability
Frequency Stability
vs. Initial Calibration
vs. Supply Voltage
vs. Load
vs. Reflow Shift
SYMBOL
VCC
VC
ELECTRICAL PARAMETERS
Control Voltage
Frequency Tuning [VCTCXO Only]
VC Input Impedance
Output Waveform
Output Voltage Levels
Output Load
Start Up Time
Phase Noise
Document No. 008-0371-0
MIN
-0.5
-0.5
-
-40
TSTG
fO
Δf/fO
-
vs. Aging
Operating Temperature
Order Code 'W'
Order Code 'H'
Order Code 'C'
Order Code 'D'
Order Code 'I'
Supply Voltage
Order Code 'M'
Order Code 'N'
Order Code 'T'
Order Code 'R'
Order Code 'L'
Supply Current
CONDITIONS
Std frequencies listed in Ordering Information
Frequency vs. Temperature Only
@25°C
±5% change
±10% change
After 2 reflows
1st year
10 year
TA
VCC
ICC
VC
ZVC
VO
RL // CL
TS
-
10
-
-
±5%
10.00 MHz - 25.99 MHz
26.00 MHz - 52.00 MHz
2.5V, 2.8V, 3.0V, 3.3V
1.8V
Specified VC Range
AC coupled Clipped Sinewave
-
TYP
-
MAX
6.0
VCC
-
85
52
0.5, 1.0, 1.5
2.0, 2.5
°C
MHz
± ppm
-
2.0
0.2
0.2
2.0
1.0
10.0
0
-10
-20
-30
-40
25
55
60
70
85
85
1.77
2.38
2.66
2.85
3.14
0.4
0.3
5.0
1.8
2.5
2.8
3.0
3.3
1.5
0.9
-
1.83
2.63
2.94
3.15
3.47
2
2.5
2.4
1.5
-
± ppm
500
-
-
kOhm
0.8
10 kOhm // 10 pF
Vp-p
-
-
2
Varies based on output frequency. See example plot @ 19.2 MHz below.
Page 2 - 4
UNIT
V
V
± ppm
°C
V
mA
V
ms
dBc/Hz
Rev. C
Model 520
TCXO/VCTCXO – Clipped Sine Wave
ELECTRICAL CHARACTERISTICS
D.U.T. PIN ASSIGNMENTS
PIN
SYMBOL
1
VC
2
3
4
GND
Output
VCC
TEST CIRCUIT – RL//CL LOAD
DESCRIPTION
GND – TCXO [Note 1]
Control Voltage – VCTCXO
Circuit & Package Ground
Clipped Sine Wave Output [Note 2]
Supply Voltage
NOTES
1. Connect to ground for TCXO (no AFC) option.
2. DC-Cut Capacitor Required.
Add 1000pF capacitor between TCXO output and input of load.
* DC-Cut Capacitor
MECHANICAL SPECIFICATIONS
PACKAGE DRAWING
MARKING INFORMATION
1. M520 - CTS Model Series.
2. ● – Pin 1 identifier.
3. D – Date code. See Table I for
codes.
4. XXX – Frequency code. Reference
CTS document 016-1454-01.
M520
● DXXX
Complete CTS part number, frequency
value and date code information must
appear on reel and carton labels.
NOTES
1. DO NOT make connections to nonlabeled pins and castellations, as
they may have internal connections
used in the manufacturing process.
2. Termination pads (e4); barrier
plating is nickel (Ni) with gold (Au)
flash plate.
3. Reflow conditions per JEDEC JSTD-020, 260°C maximum.
SUGGESTED SOLDER PAD GEOMETRY
CBYPASS should be ≥ 0.01 uF.
TABLE I – DATE CODE
MONTH
JAN
YEAR
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
M
2001
2005
2009
2013
2017
A
B
C
D
E
F
G
H
J
K
L
2002
2006
2010
2014
2018
N
P
Q
R
S
T
U
V
W
X
Y
Z
2003
2007
2011
2015
2019
a
b
c
d
e
f
g
h
j
k
l
m
2004
2008
2012
2016
2020
n
p
q
r
s
t
u
v
w
x
y
z
Document No. 008-0371-0
Page 3 - 4
Rev. C
Model 520
TCXO/VCTCXO – Clipped Sine Wave
PACKAGING INFORMATION [Reference]
Device quantity is 1k pieces minimum and 3k maximum per 180mm reel.
Document No. 008-0371-0
Page 4 - 4
Rev. C
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
CTS:
520R25HT40M0000 520L25HT16M3680 520T20IA16M3690 520M25IA38M4000 520M25IA40M0000
520N25IA26M0000 520R25IA13M0000 520R25IA16M3677 520L25IA16M3680 520L25IA16M3690
520T15DA13M0000 520T20DA13M0000 520T25DA26M0000 520R25DA26M0000 520T15CA40M0000
520L20CA13M0000 520T25CA19M2000 520T05HA13M0000 520L05HA26M0000 520R25HA13M0000
520M25HT16M3677 520N15IA16M3690 520L10DA16M3677 520T20DA16M3677 520R20DA16M3680
520T25DA19M2000 520R25DA40M0000 520L25DA26M0000 520L05CA38M4000 520M15CA16M3680
520M20CA13M0000 520T20CA20M0000 520R20CA40M0000 520L20CA16M3690 520N25CA16M3680
520N10HA16M3677 520R10HA16M3680 520N15HA40M0000 520M20HA16M3680 520R20HA13M0000
520L25HA19M2000 520R20IT19M2000 520L20IT13M0000 520M25IT16M3690 520N25IT13M0000
520T25IT16M3680 520M10DT38M4000 520R10DT26M0000 520M15DT16M3677 520L15DT26M0000
520L20DT16M3680 520L20DT20M0000 520N25DT16M3677 520R25DT38M4000 520M05CT16M3680
520M10CT16M3690 520T10CT16M3690 520L10CT40M0000 520M15CT20M0000 520N20CT38M4000
520L20CT16M3690 520R05HT16M3690 520N10HT16M3680 520L15HT16M3680 520M20HT26M0000
520R20HT19M2000 520N25HT16M3677 520N25HT38M4000 520L15IT16M3690 520L15IT20M0000
520R20IT40M0000 520R25IT16M3680 520N10DT20M0000 520R10DT20M0000 520L10DT26M0000
520N15DT19M2000 520M20DT40M0000 520L20DT16M3690 520L20DT40M0000 520M25DT13M0000
520L25DT26M0000 520T05CT13M0000 520L05CT19M2000 520M10CT16M3677 520N10CT16M3677
520L15CT38M4000 520L20CT16M3677 520T05HT20M0000 520T10HT40M0000 520R10HT38M4000
520N15HT13M0000 520N15HT38M4000 520T15HT16M3680 520L15HT13M0000 520L15HT16M3690
520L15HT19M2000 520T20HT20M0000 520M25HT16M3680 520M25HT16M3690 520N25HT16M3680
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