Voltage Controlled Temperature Compensated Crystal
Oscillators VCTCXO, VM53T Series, CMOS Output
Features:
5x3.2x2.2 mm ceramic SMD VCTCXOs with CMOS square wave output
0.01 uF decoupling capacitor built-in
Wide frequency range: 1.0 MHz to 200.0 MHz
Ideal for cellular phone, GPS.
General Specifications
(at+25°C and specified input voltage
Product Series
Frequency Range
Output Wave From
Initial Calibration Tolerance
(1)
Standard Frequencies (partial list)
Frequency Stability (ppm)
Temperature
0 to +50°C
Range
-10 to +60°C
-20 to +70°C
-30 to +75°C
Standard
-40 to +85°C
Frequency Stability
vs Aging
vs Voltage Change
vs Load Change
vs Reflow
Supply Voltage (V
DD
)
Current Consumption (typical)
Output Voltage Level
Logic “1”
Logic “0”
MERCURY
Since 1973
VM53T
1.0 MHz ~ 200.0 MHz
NOTE: 32.768 KHz is also available
Square
wave. Wave form code is “T”
±2 ppm at +25°C±2°c and Vcon = +1.5 V D.C.
10.0, 12.8, 13.0, 14.4, 16.0, 16.384, 19.2, 19.440, 19.680, 20.0, 38.880 , 77.760 ,
155.520 MHz
±0.5 pppm ± 1 ppm
±1.5 ppm
±2.0 ppm
±2.5 ppm
√
√
√
√
√
√:
Available
√
√
√
√
: Call us
√
√
√
√
: Not
available
√
√
√
√
√
√
√
√
±1.0 ppm max. first year at +25°C
±2 ppm max. for a ±10% input voltage change
±0.3 ppm max. for a ±10% loading condition change
±1 ppm max. 1 reflow and measured 24 hours afterwards
+2.8 V
(voltage code is
+3.0 V
(voltage code is
+3.3 V
(voltage code is
“28”)
“3”)
“33”)
2 mA @ 8.192MHz;
4 mA @ 10 MHz;
17 mA @77.760 MHz; 35 mA @ 155.520 MHz
90% V
DD
min.
10% V
DD
max.
1.5 ns typical; 2.0 nano.max. 10%
↔
90% of V
DD
50%±10% measured at 50% V
DD
5 ms typical; 10 m. sec. max.
Rise Time and Fall Time
Duty Cycle (Symmetry)
Start-up Time
Electronic
Frequency Tuning
on pad 1.
(VCTCXO only)
Output Load
SSB Phase Noise
at +25°C
Frequency
Deviation Range
Slope Polarity
Linearity
Offset
VM53T33-100.000
±10 ppm typical with Vcontrol centered at = +1.5 V and Vcontrol range of ±1.0 V
Positive:
Positive voltage for positive frequency shift
10 % max.
15 pF
10 Hz
100 Hz
1 kHz
10 kHz
-72 dBc/Hz
-110 dBc/Hz -125 dBc/Hz
-132 dBc/Hz
100 kHz
-125 dBc/Hz
Taiwan: TEL (886)-2-2406-2779, FAX (886)-2-2496-0769, e-mail:
sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail:
sales-us@mercury-crystal.com
MERCURY
Page 1 of 3
Date: May 1, 2008
Revision: 0
MERCURY www.mercury-crystal.com
Voltage Controlled Temperature Compensated Crystal
Oscillators VCTCXO, VM53T Series, CMOS Output
Part Number Format and Example:
Part number example:
VM53T
3
—
VM53T3-20.000-2.5/-30+75
20.000
—
2.5
⁄
-30+75
= Please specify
MERCURY
Since 1973
: Product Series. Use “M53T” for TCXO product. : Voltage code; Use”28” for +2.8 V;
use “3” for +3.0 V; use “33” for +3.3 V;
: Frequency in MHz
: Frequency stability in ppm
: Operating Temperature range in °C
CMOS Square Wave VCTCXO Test Circuit and Output Wave Form:
Clock Out
A
+ +
- V
-
4
0.1uF
VM53T
MEC
+
-
3
15
pF *
80%
T2
T1
1
50%
* Include all the
2
20%
probe and stray
capacitances
Tr
Tf Duty Cycle = T1 *100%
T2
Environment Performance Specifications
Green Requirement
MSL Level
Humidity
Hermeticity
Solderability
Vibration
Shock
Storage temp. range
RoHS compliant, Pb (lead) free
MSL 1 per IPC/JEDEC-STD-020C
85% RH, 85°C, 48 hours. Crystal part only.
Leak rate 2x10
-8
ATM-cm
3
/sec max. Crystal part only.
MIL-STD-202F method 208E
MIL-STD-202F method 204, 35G, 50 to 2000 Hz
MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave
-55 to +125°C
MERCURY
Page 2 of 3
Date: May 1, 2008
Revision: 0
Voltage Controlled Temperature Compensated Crystal
Oscillators VCTCXO, VM53T Series, CMOS Output
Package Dimensions and Suggested Land Pattern:
Unit: mm
MERCURY
Since 1973
5.0±0.2
3.2±0.2
0.8
bottom view
1
4
0.1
1.4
0.1
1.2
1.2
Time
(sec)
Cooling
Time
(sec)
2
3
1
2.2 max.
Pad 1
Pad 2
Pad 3
Pad 4
Voltage Control
Ground
Output
Supply Voltage
1.1
2.4
Recommended Solder Reflow Profiles
245°C liquidus 221°C solidus solder alloy is used in the assembly of VM53T products.
Do not exceed the reflow conditions given below.
Profile A (low temperature solder reflow): For Sn62 Pb36 Ag2 and Sn63 Pb37 alloy.
250
230
200
183
150
100
50
Pre-heat 1
Peak Temperature. Topside temperature of board to be 220°C min; 230°C max.
Liquidus Temperature
Flux Activation
Temperature
Temperature (°C)
t
Time above 183°C
up a
mp
max.
Ra
ec
30~60 sec. max.
Ramp
4°C dow
/s
2°C
/ se n at
cm
ax.
Soaking Zone
Reflow
Pre-heat 2
Zone
Cooling
30
60
90
120 150 180
210 240 270 300 330
Soaking temp: 140°C~180°C
Soaking time: 60~90 sec.
Profile B (high temperature solder reflow): For Sn96.5% Ag 3.5% Cu 0.5% alloy.
250
Temperature (°C)
217
200
150
100
50
Pre-heat 1
Peak Temperature. Topside temperature of board to be 230°C min; 248°C max.
Liquidus Temperature
Flux Activation
Temperature
t
up a
amp
c max.
R
/ se
2°C
Time above 217°C
30~60 sec. max.
Ram
4°C p dow
/ se n at
cm
ax.
Reflow
Zone
Soaking Zone
Pre-heat 2
30
60
90
120 150 180
210 240 270 300 330
Soaking temp: 140°C~200°C
Soaking time: 90~120 sec.
MERCURY
Page 3 of 3
Date: May 1, 2008
Revision: 0
