SURFACE MOUNT
T package
VOLTAGE CONTROLLED
CRYSTAL OSCILLATORS
HCMOS/TTL 3.3V
T2306,
T2320, T2330
5 x 7 mm Surface Mount
Commercial: 0º to 70ºC
3 MHz to 32.768 MHz
GUARANTEED CAPTURE RANGE/ABSOLUTE PULL RANGE
Guaranteed Capture Range (GCR) and Absolute Pull Range (APR) are terms often used interchangeably.
MF's Guaranteed Capture Range (GCR) is defined as the minimum guaranteed frequency deviation or
"pull" (in ppm) around the nominal frequency, with all effects of temperature, variations in VDD and load
taken into account. This amount of absolute frequency deviation is available under all operating conditions
for modulation or capturing other signals. No additional frequency capture allowances are necessary.
Description
These SMD VCXOs generate a 3.3 volt
HCMOS/TTL frequency output which is
controlled ("pulled") by an input voltage.
MF Electronics' VCXO specification
defines not only the end-point frequency/
voltage parameters, but also the center
voltage at which the nominal frequency
is acheived.
FEATURES
• Guaranteed Capture Range of ±50 ppm
• Excellent incrememtal and best-straight-line linearity
• Start-up time is less than 5ms
• Each unit is ATE-tested to guarantee full compliance with all electrical specifications
TYPICAL APPLICATIONS
• Phase locked loops and data acquisition projects, including:
– xDSL customer premise equipment
– Cable modems
– ATM/SONET/SDH
CONNECTIONS
Pad 1.
Pad 2.
Pad 3.
Pad 4.
T Package
Control Voltage
Ground
Output
+3.3V, VDD
0.071 (1.8) SQ.
Marking
is shown
on marking
spec
0.165
(4.2)
0.200
(5.1)
0.193 ± .007
(5.0)
0.274 ± .007
(7.0)
PAD 1
230
200
SUGGESTED PC PADS
PAD 1
Temperature
of pad (…C)
.075 (1.9)
.067 (1.7)
PAD 2 (GND)
Millimeters are shown in ( ).
.045 ± .008
(1.1)
PAD 4
( VDD )
100
30
sec
min.
.048 ± .003
(1.0)
0.200 ± .005
(5.1)
160
140
PAD 3 (OUTPUT)
50 to
100 sec
20 30 to 20
sec 50 sec sec
min.
min.
Time (sec)
“T” Package
Recommended Reflow Soldering Profile
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
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VOLTAGE CONTROLLED
CRYSTAL OSCILLATORS
HCMOS/TTL 3.3V
Surface Mount
SURFACE MOUNT
T package
T2306,
T2320, T2330
Commercial: 0° to 70°C
3 MHz to 32.768 MHz
ELECTRICAL SPECIFICATIONS
Frequency Range 3 MHz to 32.768 MHz
Center Frequency is Between Two Voltages with ±50 ppm stability
MODEL
Marking
Letter
ID
Control
Voltage
(Volts)
Guaranteed
Frequency
Deviation
(ppm)
Control
Capture
Range
(ppm)
Center
Voltage
at Center
Frequency
Frequency
Stability
(ppm)
T2306
VQ
0 to 3.0
± 50 min
± 50
–
50, max
Frequency Stability Includes calibration at 25°C, operating temperature,
change of input voltage, change of load, shock and
vibration.
Center Frequency is at 1.5V with ±50 ppm stability
MODEL
Marking
Letter
ID
Control
Voltage
(Volts)
Frequency
Deviation
(ppm)
T2320
VR
0.5 to 2.5
± 50 to 150
Input Voltage, VDD
Guaranteed Control
Center
Capture
Voltage Frequency
Range
at Center Stability
(ppm)
Frequency
(ppm)
± 50
1.5
Input Current
3 M to 10 MHz
10.1 to 20 MHz
20.1 to 30 MHz
30.1 MHz and above
± 30, typ
Center Frequency is at 1.5V with ±25 ppm stability
MODEL
Marking
Letter
ID
Control
Voltage
(Volts)
Frequency
Deviation
(ppm)
T2330
VS
0.5 to 2.5
± 50 to 150
Guaranteed Control
Center
Capture
Voltage Frequency
Range
at Center Stability
(ppm)
Frequency
(ppm)
± 50
1.5
Output Levels
“0” Level, sinking 16 mA
“1” Level
CMOS, sourcing 8 mA
± 15, typ
T2320
T2330
±50 ppm, min. deviation when using
0 to 3.0V rail-to-rail control-voltage
±50 ppm capture when using using 0.5 to 2.5V
control-voltage and 1.5V center with ±50 ppm stability
±50 ppm capture when using using 0.5 to 2.5V
control-voltage and 1.5V center with ±25 ppm stability
Symmetry
CMOS, @ 50% VDD
FREQUENCY STABILITY
Frequency stability vs. Temperature (0 to 70°C) is typically better than
±20 ppm. Since the deviation of each oscillator is tested and guaranteed
over the whole operating temperature range, it is not necessary to make
additional capture allowances. All oscillators will capture frequencies with
the full minimum values of the deviation under all conditions.
Aging
First year
After first year
QUALITY
Each VCXO is computer-tested at three temperatures to guarantee
full compliance to the specification.
TYP
3.3
MAX
3.6
UNITS
volts
2.0
3.0
5.0
7.0
3.5
4.0
6.0
8.0
mA
mA
mA
mA
0.4
volts
VDD-.4
Rise and Fall Times
CMOS, 15 pf,
20 to 80%
CMOS, 30 pf,
20 to 80%)
CMOS, 50 pf,
20 to 80%)
DESCRIPTIONS
T2306
MIN
3.0
volts
3.0
4
ns
4.0
5
ns
6.0
8
ns
48/52
45/55
percent
3
1
ppm
ppm/yr
Input Impedance,
Pad 1, Control Voltage
100
1000
Kohms
Control Voltage Bandwidth
15
75
KHz
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
2 of 4
VOLTAGE CONTROLLED
CRYSTAL OSCILLATORS
HCMOS/TTL 3.3V
Surface Mount
SURFACE MOUNT
T package
T2306,
T2320, T2330
Commercial: 0° to 70°C
3 MHz to 32.768 MHz
SURFACE MOUNT “T”
T packages are glass-ceramic packages, hermetically sealed at 420°C.
For hand-soldering, the temperature of the iron should not exceed 400°C
for three seconds.
ENVIRONMENTAL SPECIFICATIONS
Temperature
Operating
0º to 70°C
Storage
-55º to +125°C
Temperature Cycle – Not to exceed ±5 ppm change when exposed to 2
hours maximum at each temperature from 0 to 120°C, with 25°C reference
Shock – 1000 Gs, 0.35 ms, 1/2 sine wave, 3 shocks in each plane
Vibration – 10-2000 Hz of .06" d.a. or 20 Gs, whichever is less
Humidity – Resistant to 85° R.H. at 85°C
MECHANICAL, SPECIFICATIONS
Gross Leak – Each unit checked in 125°C fluorocarbon
Fig. 1 T2320 –20M
Fine Leak – Mass spectrometer leak rate less than 5 X 10 (-8) atoms,
cc/sec of helium
Case – Hermetically sealed package
Pads – 60 microinch of gold over nickel
Marking – Print is permanent white ink.
Resistance to Solvents – MIL STD 202, Method 215
PAD 1.
CONTROL VOLTAGE
FET PROBE
VDD
+3.3V
VDD
MA
1
Power
Supply
350 MHz
SCOPE
Y-OUTPUT
14
LOAD
0.1 MF
7
GND
To adapt Fet probe to receptacle
use Tektronix Part #103-0164-00
COUNTER
8
To connect output to scope use
use Tektronix Part #131-0258-00 (receptacle)
TEST CIRCUIT
Fig. 2 T2320 –19.44M
with 25 pf load
MARKING SPECIFICATION
The format for the marking is:
MF Electronics Model
T Oscillator
Code
Date
Code
MTXXYY
125.00
Pin 1
Frequency
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
3 of 4
VOLTAGE CONTROLLED
CRYSTAL OSCILLATORS
HCMOS/TTL 3.3V
Surface Mount
SURFACE MOUNT
T package
T2306,
T2320, T2330
Commercial: 0° to 70°C
3 MHz to 32.768 MHz
Deviation from Nominal Frequency, ppm
DEVIATION vs CONTROL VOLTAGE
FOR T2330 -27M, TYPICAL
150
150
100
100
100
50
50
50
0
0
0
-50
-50
-50
-100
VDD = 3.6V
VDD = 3.3V
VDD = 3.0V
-100
VDD = 3.6V
VDD = 3.3V
VDD = 3.0V
-100
-150
-150
0.5
0.0
1.0
1.5
2.0
2.5
3.0
VDD = 3.6V
VDD = 3.3V
VDD = 3.0V
-150
-200
0.5
0.0
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
1.5
2.0
2.5
Control Voltage, Vc
Control Voltage, Vc
Control Voltage, Vc
Fig. 3 Deviation vs. Control Voltage
at 0°C
Fig. 4 Deviation vs. Control Voltage
at 25°C
Fig. 5 Deviation vs. Control Voltage
at 70°C
3.0
HOW TO ORDER
For Part Number, put package type before model number,
and add frequency in MHz, for example:
T
“T” is SMD
“T” package
SS#
Rev.
T2306
A
2320 - 20M
“2320”
is model
type
“20 M”
frequency
in MHz
ELECTRONICS
Unless customer-specific terms and conditions
are signed by an officer of MF Electronics, the
sale of this and all MF Electronics products are
subject to terms and conditions set forth at
www.mfelectronics.com/terms
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
4 of 4