Data Sheet

EURO QUARTZ
ZT620 to ZT623 Series TCXO
Standard Package, Tight Staility/Low Noise
1.25MHz to 300MHz
Good Phase Noise over MIL temperature range
Wide frequency range
Output Squarewave, ACMOS available 1.25MHz to 50MHz
Output PECL available
Industry-standard dual-in-line package
OUTLINES AND DIMENSIONS
DESCRIPTION
ZT620 series TCXOs are standard-packaged parts providing extended
shock and vibration performance with close tolerance temperature
stability. The part provides tight stability from ±2x10-7ppm over -10°
to +60°C.
GENERAL SPECIFICATION
Frequency Range:
1.25MHz to 300.0MHz
Output
Model ZT620/ZT621: Squarewave, ACMOS (available from
1.25MHz to 50.0MHz)
Model ZT622/XT623: PECL (available from 50MHz to
300MHz)
Load
ACMOS:
15pF ±5%
PECL:
50Ω to VSUPPLY -2.0V
Symmetry:
50%±10%
Ageing:
±2x10-9 per day after 30 days
Input Voltage
ZT620 & ZT622:
+5.0VDC ±5%
ZT621 & ZT623:
+3.3VDC ±5%
Frequency Adjust:
±5ppm typical positive slope
0 to VSUPPLY EFC
STABILITY OVER TEMPERATURE
Temp. Range
Stability
Part No. Code
-10~+60°C
±2x10-7ppm
G27
-20~+70°C
±3x10-7ppm
N37
-40~+85°C
±5x10-7ppm
T57
-40~+85°C
±12x10-6ppm
T16
PART NUMBERING
Example:
ZT620-N27-10.0MHz
ZT620 - N27 - 10.0MHz
Model number - Stability - Frequency
PHASE NOISE
(At 10MHz, Typical)
Offset
dBc/Hz
10Hz
-95
100Hz
-125
1kHz
-140
10kHz
-150
100kHz
-155
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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