V C T C X O – Ultra Low Current
Logic: HCMOS
“VM57K” SERIES 5x7 mm
Wave Form: Square Wave
With VM57K design engineers enjoy the benefits of HCMOS output,
VCTCXO stability, ultra low current and miniaturized 5x7 packaging.
VM57K consumes less than 4 mA at 26 MHz +3.3 V with low phase
noise of -130 dBc / Hz at 1 KHz offset.
General Specifications
T
A
=+25°C, V
DD
at specified voltage, load
15 pF
Frequency Range
Output Wave From
Initial Calibration Tolerance
Standard Frequencies
Frequency Stability
vs Temperature
vs Aging
vs Supply Voltage Change
vs Load Change
vs reflow (SMD models)
Typical Operating Temperature
Range (examples)
Input Voltage Range (V
DD
)
Logic High “1”
Logic Low “0”
12.8 MHz
13.0 MHz
14.4 MHz
Current
16.384 MHz
Consumption
19.200 MHz
mA, typical
19.440 MHz
20.000 MHz
26.000 MHz
Rise Time and Fall Time
Duty Cycle (Symmetry)
Start-up Time
Slope Polarity
Linearity
Output Load
Fanout (Drive Capability)
SSB Phase Noise Offset
at +25°C
VM57K3-13.000
RMS Period Jitter
Packaging
Pad 1
Function
MERCURY
Since 1973
Output Voltage
Levels
12.8 MHz ~ 26.0 MHz
CMOS Square
wave.
PRELIMINARY
±2 ppm at +25°C±2°C
12.8, 13.0, 14.4, 15.36, 16.0, 16.384, 16.8, 19.2, 19.44, 19.68, 20.0 and
26.0 MHz (partial list)
±1 ppm , ±1.5 ppm, ±2.0 ppm, ±2.5 ppm, ±3 ppm, ±5 ppm or±10 ppm over
specified operating temperature range
±1.0 ppm max. first year at +25°C
±1.0 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
0°C to +60°C
0°C to +70°C
-10°C to +60°C
-20 °C to +70°C
-30°C to +60°C
-30°C to +75°C or custom
±5 ppm stability for -40°C to +85°C is also available
+2.8 V
+3.0 V
+3.3 V
(voltage code is “28”)
(voltage code is “3”)
(voltage code is “33”)
1.9 V min.; 2.3 V typical
2.1 V min.; 2.6 V typical
2.4 V min.; 2.9 V typical
0.27 V typical; 0.34V max. 0.29 V typical; 0.36V max. 0.32 V typical; 0.4 V max.
2.3 mA typical
2.4 mA typical
2.6 mA typical
2.5 mA typical
2.6 mA typical
2.8 mA typical
2.6 mA typical
2.8 mA typical
3.1 mA typical
2.8 mA typical
3.0 mA typical
3.2 mA typical
3.2 mA typical
3.3 mA typical
3.6 mA typical
3.2 mA typical
3.4 mA typical
3.7 mA typical
3.2 mA typical
3.4 mA typical
3.7 mA typical
3.6 mA typical
3.8 mA typical
4.1 mA typical
4 n sec. typical. 0.3 V
↔
3.0 V with 15 pF load
50%±5% measured at 1.4 V
10 m. sec. max.
±5~±12 ppm for +1.5 V±1.5V
±5~±12 ppm for +1.5 V±1.5V
Positive:
Increasing control voltage increases output frequency.
10 % max.
15 pF
12 mA typical 17 mA max. (at TTL level)
100 Hz
1 KHz
10 kHz
100 kHz
1 MHz
-80 dBc/Hz
-110 dBc/Hz -130 dBc/Hz
-135 dBc/Hz -142 dBc/Hz
3 ps max. (1 sigma, 1000 samples; with capacitive coupling between V
DD
and gnd)
16 mm tape; 8 mm pitch; 1000 pcs per reel.
Electrical Frequency Tuning
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: Jan. 23, 2005
Rev. 0
MERCURY
www.mercury-crystal.com
V C T C X O – Ultra Low Current
Logic: HCMOS
“VM57K” SERIES 5x7 mm
Wave Form: Square Wave
(1)
MERCURY
Since 1973
Inclusive of 25°C tolerance, operating temperature range, ±10% input voltage variation, load change, aging,
shock and vibration.
Part Number Format and Example
= Please specify
Example:
VM57K3-20.000-2.5/-30+75
Explanation:
Ultra low current VCTCXO 20.000 MHz; +3.0 V supply voltage; ±2.5 ppm over -30°C to +75°C frequency
stability.
VM57K
3
—
20.000
—
2.5
⁄
-30+75
: Product series; : Voltage codes: “28” for +2.8 V;
”3”
for +3.0 V; “33” for +3.3 V
MHz; : Frequency stability in ppm; Operating temperature range in
°C
VM57K Package Dimensions and Recommended Pad Layout:
[0.275±0.006]
7.00±0.15
[0.024]
0.6
[0.049]
3
2
4
1
: Frequency in
unit mm[inches]
[0.055]
1.4
4
[0.197±0.006]
5.00±0.15
3
1.25
VM57K_
MEC
1
2
2.5±0.2
[0.098±0.008]
R0
.7
0.55 [0.022]
5.08 [0.200]
typical
bottom view
2.2[0.086]
2.0[0.079]
[0.004]
0.1
Pad 1
Pad 2
Pad 3
Pad 4
Voltage Control
Ground
Output
Supply voltage
5.08 [0.200]
Chamfered pad is pad No. 1. Count counter-clockwise when looking at top view.
Count clockwise when looking at bottom view.
o.o1uF Decoupling capacitor built-in
MERCURY
Page 2 of 3
Date: Feb. 6, 2002
1.8[0.071]
Rev. 1
V C T C X O – Ultra Low Current
Logic: HCMOS
“VM57K” SERIES 5x7 mm
Wave Form: Square Wave
Environment Performance Specifications
RoHS Compliance
Storage temp. range
Humidity
Hermetic seal
Solderability
Reflow
Vibration
Shock
Pb (lead) free
-55 to +125°C
85% RH, 85°C, 48 hours
Leak rate 2x10
-8
ATM-cm
3
/sec max.
MIL-STD-202F method 208E
260°C for 10 sec.
MIL-STD-202F method 204, 35G, 50 to 2000 Hz
MIL-STD-202F method 213B, test condi. E, 1000GG ½ sine wave
MERCURY
Since 1973
RECOMMENDED REFLOW SOLDERING PROFILE
MERCURY
Page 3 of 3
Date: Jan. 23, 2005
Rev. 0
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