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參數資料
| 型號： | VEM42S5-19.440-2.5/0+50 |
| 廠商： | EUROQUARTZ LTD |
| 元件分類： | XO, clock |
| 英文描述： | TCVCXO, CLIPPED SINE OUTPUT, 19.44 MHz |
| 封裝： | SMD, 4 PIN |
| 文件頁數： | 1/1頁 |
| 文件大小： | 148K |
| 代理商： | VEM42S5-19.440-2.5/0+50 |
EURO QUARTZ
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001
info@euroquartz.co.uk
www.euroquartz.co.uk
TCXO
SPECIFICATION
Product Series Code:
VEM42S
Frequency Range:
9.6MHz to 26.0MHz
Output Waveform:
Clipped sine wave
Initial Calibration Tolerance*:
±3ppm at 25°C
Standard Frequencies:
9.6, 10.0, 12.80, 13.0, 14.40,
15.36, 16.384, 19.2, 19.440,
and 19.680MHz.
Operating Temperature Range:
See table
Frequency Stability
Over Operating Temperature range:
See table
vs. Ageing:
±1.0 ppm max. first year
vs. Voltage Change:
±0.3 ppm max. ±5% change
vs. Load Change:
±0.3 ppm max. ±10% change
vs. Reflow:
±1ppm max. for one reflow
(Measured after 24 hours)
Input Voltage Range:
+2.6 VDC to +6.0 VDC
3.0V and 5.0V are standard
Output Voltage Level
+3.0V supply:
0.8V p-p minimum
+5.0V supply:
1.0V p-p minimum
Current Consumption:
See table
Output Load:
10k Ohms//15pF
Harmonic Distortion:
-10dB typical, -7dB maximum
Output Format:
DC block, AC coupled
Storage Temperature:
-40°C to +85°C
Electrical Frequency Tuning
±5ppm to ±12ppm for .5Vdd
(<±100ppm is available)
Slope Polarity:
Positive (Increasing control V.
increases output frequency)
Linearity:
10% maximum
VEM42S - OUTLINES AND DIMENSIONS
Frequency Stability (ppm)
±0.5
±1.0
±1.5
±2.0
±2.5
Temperature
Range (°C)
0 ~ +50
-10 ~ +60
ASK
-20 ~ +70
x
-30 ~ +75
x
-40 ~ +85
x
= available, x = not available, ASK = call Technical Sales
FREQUENCY STABILITY
VEM42S - TEST CIRCUIT
VEM42S - PART NUMBERING PROCEDURE
Example:
VEM42S3-19.44-2.5/-30+75
Series Description
Supply Voltage
3 = 3.0 VDC
5 = 5.0 VDC
(specify other)
Frequency MHz
Stability (over O.T.R. in ppm)
Operating Temperature Range (OTR)
= standard specification
Frequency Range
+3.0 V
+5.0 V
9.6MHz to 13MHz
1.3mA
2.0mA
13.1MHz to 20MHz
1.5mA
2.2mA
20.1MHz to 26MHz
2.0mA
2.5mA
CURRENT CONSUMPTION
DESCRIPTION
VEM42S series VCTCXOs are packaged in the industry-standard 11.4
x 9.6 x 2.5mm package. With clipped sinewave output, close
tolerances are available from ±0.5ppm over 0° to 50°C or ±1ppm
over -40° to +85°C. The output is controllable by EFC enabling output
variation of ±5ppm to ±12ppm. The part has very low power
consumption.
Voltage-controlled Clipped Sinewave 11.4 x 9.6 x 2.5mm SMD
VEM42S Series
11.4 x 9.6 x 2.5mm SMD
Frequency Range: 9.6MHz to 26MHz
Close tolerance stabilities from ±0.5ppm over 0° to +50°C
±1ppm over -40 to +85°C also available
EFC tuning ±5ppm to ±12ppm
Very low power consumption
SSB Phase Noise
at 25°C
(VEM42 13MHz)
Offset (Hz)
10
100
1k
10k
100k
dBc/Hz
-72
-110
-125
-132
-125
TYPICAL PHASE NOISE
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