New Rochelle, N.Y. MF Electronics claims that the narrow control-voltage range of its Model M6322 oscillator solves problems for designers of 3.3-volt data communications equipment.
This through-hole voltage-controlled crystal oscillator (VCXO) provides plus/minus 100-ppm minimum pull for full-scale control-voltage excursion from 0.5 to 2.5 V.
Frequency is 46.736 MHz at the center of the control-voltage range (1.5 V). Maximum frequency deviation at 1.5 V is plus/minus 50 ppm.
The oscillator operates from 3.3-Vdc plus/minus 10 percent supplies, and sustains normal operation during supply-voltage dips to 3 V, according to MF Electronics. Other VCXOs in the family cover the 3- to 50-MHz range, the company said.
The new oscillator guarantees all specifications for the extended industrial temperature range of -40 degrees C through 85 degrees C.
Control voltage can be varied at rates to 150 kHz, for maintaining synchronism with phase-locked-loop in-put-frequency variations. Current draw is 35 mA at 50 MHz (20 mA typical) and 14 mA maximum (8 mA typical) at 3 MHz. Typical jitter is less than 6 picoseconds rms; waveform symmetry is greater than 45/55; maximum waveform rise and fall times are 3 to 8 ns, depending on load capacitance.
The Model M6322 provides tristate capability for automated test purposes. The test system injects a control pulse to halt oscillation, permitting test signals to be injected into the system undergoing inspection.
The device is manufactured in standard M, L and H through-hole packages and is compatible with CMOS logic. An internal 0.1-microfarad bypass capacitor decouples noise from the dc power bus.
Tight linearity control makes the VCXO suitable for use in advanced PLL circuits, for re-creating and retransmitting clean signals in data and communications applications. These VCXOs are used in high-density digital and communications equipment, the company said.
Depending on frequency, pricing in OEM quantity ranges from $14.50 to $24.50. Delivery is stock to six weeks.
CALL (800) 331-1236
EETInfo No. 627