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