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參數資料
| 型號： | EM8K33-19.680-2.0/-10+60 |
| 廠商： | EUROQUARTZ LTD |
| 元件分類： | XO, clock |
| 英文描述： | TCXO, CLOCK, 19.68 MHz, HCMOS OUTPUT |
| 封裝： | ROHS COMPLIANT, DIL-8/4 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 94K |
| 代理商： | EM8K33-19.680-2.0/-10+60 |
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
8 pin Dual-in-Line TCXO
EM8K ULTRA-LOW CURRENT
DESCRIPTION
Highly stable CMOS TCXO with ultra-low supply current
Industry-standard package
Consumes less than 4mA at 20.0MHz with 3.3V supply
Low phase noise
RoHS compliant
EM8K TCXOs and VCTCXOs are packaged in an 8 pin DIL package.
The part offers the stability of a TCXO and the design convenience of
HCMOS output with ultra-low current consumption.
OUTLINES AND DIMENSIONS
P
= available, x = not available, ASK = call Technical Sales
SPECIFICATION
Product Code
TCXO:
EM8K
VCTCXO:
VEM8K
Frequency Range:
12.8MHz to 26.0MHz
Output Waveform:
HCMOS
Initial Calibration Tolerance:
<±2.0ppm at +25°±2°C
Standard Frequencies:
12.8, 13.0, 14.4, 15.36, 16.0,
16.384, 16.8, 19.2, 19.44,
19.68, 20.0 and 26.0MHz
(Partial list.)
Operating Temperature Range:
See table
Frequency Stability
vs. Temperature
See table
vs. Ageing:
±1.0 ppm max. first year
vs. Voltage Change:
±1.0 ppm max. ±10% change
vs. Load Change:
±0.3 ppm max. ±10% change
vs. Reflow (SMD type):
±1.0ppm max. for one reflow
(Measured after 24 hours)
Supply Voltage:
+2.8, 3.0 or 3.3 Volts
Current Consumption:
See table
Output Logic Levels:
See table
Rise and Fall Times:
4ns typical with 15pF load
Duty Cycle:
50%±5%
Start-up Time:
5ms typical, 10ms max.
Output Load:
15pF
Fanout (drive capability):
12mA typical, 17mA max.
(at TTL level)
RMS Period Jitter:
3ps max. (1 Sigma, 1000
samples; capacitive coupling
between Vdd and Ground).
RoHS Status:
RoHS compliant and pB free
Packaging:
16mm tape, 8mm pitch
1000 pieces per reel.
PART NUMBER FORMAT
Example:
EM8K33-20.000-2.5/-30+75
Supply Voltage
28=2.8V, 30=3.0V, 33=3.3VDC
Frequency (MHz)
Stability over OTR (±ppm)
Operating Temperature Range (OTR)
Lower and upper limits (°C)
Series Description
TCXO = EM8K
VCTCXO = VEM8K
CURRENT CONSUMPTION
Offset
100Hz
1kHz
10kHz
100kHz
1MHz
Part =
VEM8K30
at 13.000MHz
(dBc/Hz)
-80
-110
-130
-135
-142
SSB PHASE NOISE at 25°C
12.800MHz
2.3mA typ.
2.4mA typ.
2.6mA typ.
13.000MHz
2.5mA typ.
2.6mA typ.
2.8mA typ.
14.400MHz
2.6mA typ.
2.8mA typ.
3.1mA typ.
16.384MHz
2.8mA typ.
3.0mA typ.
3.2mA typ.
19.200MHz
3.2mA typ.
3.3mA typ.
3.6mA typ.
19.440MHz
3.2mA typ.
3.4mA typ.
3.7mA typ.
20.000MHz
3.2mA typ.
3.4mA typ.
3.7mA typ.
26.000MHz
3.6mA typ.
3.8mA typ.
4.1mA typ.
Input Voltage
+2.8V
+3.0V
+3.3V
Frequency
Stability (ppm)
±1.0
±2.0
±2.5
±3.0
±4.0
±5.0
Temp.
Range (°C)
0 ~ +50
P
-10 ~ +60
ASK
P
-20 ~ +70
X
P
-30 ~ +75
X
P
-40 ~ +85
X
ASK
P
FREQUENCY STABILITY OVER TEMPERATURE
Control Voltage:
±5 to ±12ppm for +1.5 ±1.5 Volts
Slope Polarity:
Positive (increase of control voltage increases
output frequency.)
Linearity:
6% typical, 10% maximum
VEM8K VOLTAGE CONTROL SPECIFICATION
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