MERCURY
Since 1973
V C T C X O – Ultra Low Current
“VM57K” SERIES 5x7 mm
Logic: HCMOS
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 SpecificationsT A=+25°C, VDD at specified voltage, load 15 pF
Frequency Range
Output Wave From
Initial Calibration Tolerance
12.8 MHz ~ 26.0 MHz
CMOS Square wave.
±2 ppm at +25°C±2°C
PRELIMINARY
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)
Standard Frequencies
Frequency Stability
vs Temperature
vs Aging
±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
vs Supply Voltage Change ±1.0 ppm max. for a ±10% input voltage change
vs Load Change
vs reflow (SMD models)
±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
-20 °C to +70°C
±5 ppm stability for -40°C to +85°C is also available
0°C to +70°C
-30°C to +60°C
-10°C to +60°C
-30°C to +75°C or custom
Typical Operating Temperature
Range (examples)
+2.8 V
(voltage code is “28”)
+3.0 V
(voltage code is “3”)
+3.3 V
(voltage code is “33”)
Input Voltage Range (V
)
DD
Output Voltage
Levels
Logic High “1”
Logic Low “0”
12.8 MHz
13.0 MHz
14.4 MHz
16.384 MHz
19.200 MHz
19.440 MHz
20.000 MHz
26.000 MHz
1.9 V min.; 2.3 V typical
0.27 V typical; 0.34V max. 0.29 V typical; 0.36V max. 0.32 V typical; 0.4 V max.
2.1 V min.; 2.6 V typical
2.4 V min.; 2.9 V typical
2.3 mA typical
2.5 mA typical
2.6 mA typical
2.8 mA typical
3.2 mA typical
3.2 mA typical
3.2 mA typical
3.6 mA typical
2.4 mA typical
2.6 mA typical
2.8 mA typical
3.0 mA typical
3.3 mA typical
3.4 mA typical
3.4 mA typical
3.8 mA typical
2.6 mA typical
2.8 mA typical
3.1 mA typical
3.2 mA typical
3.6 mA typical
3.7 mA typical
3.7 mA typical
4.1 mA typical
Current
Consumption
mA, typical
Rise Time and Fall Time
Duty Cycle (Symmetry)
Start-up Time
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.
Electrical Frequency Tuning
±5~±12 ppm for +1.5 V±1.5V
±5~±12 ppm for +1.5 V±1.5V
Slope Polarity
Linearity
Positive: Increasing control voltage increases output frequency.
10 % max.
Output Load
15 pF
Fanout (Drive Capability)
SSB Phase Noise Offset
12 mA typical 17 mA max. (at TTL level)
100 Hz
1 KHz
10 kHz
100 kHz
1 MHz
at +25°C
VM57K3-13.000
-80 dBc/Hz
-110 dBc/Hz -130 dBc/Hz
-135 dBc/Hz -142 dBc/Hz
RMS Period Jitter
Packaging
3 ps max. (1 sigma, 1000 samples; with capacitive coupling between VDD and gnd)
16 mm tape; 8 mm pitch; 1000 pcs per reel.
MERCURY
www.mercury-crystal.com
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