High-gain oscillator amp aims for networking uses

The NBLVEP16VR is a novel amplifier featuring both an oscillator gain stage and enabled high gain outputs.

The NBLVEP16VR is a novel amplifier featuring both an oscillator gain stage and enabled high gain outputs.

Delivering operating frequencies above 2.5GHz, the device is ideal for timing module applications in high-speed telecommunications, networking and automated test equipment.

Specific applications include use in the buffer/amplifier for voltage controlled crystal oscillators (VCXO), temperature compensated crystal oscillators (TCXO) and surface acoustic wave (SAW) based modules in high-speed telecommunications, networking and automated test equipment.

The NBLVEP16VR operates as the active device in a timing module with three fundamental tasks.

First, the device provides amplification of the differential feedback loop with selectable 4 or 8mA self bias current sources.

Additionally, it offers simultaneous amplification of the primary output with an available 10mA current source or traditional LVPECL.

Finally, the NBLVEP16VR functions as a buffer to isolate the oscillator circuit from the rest of the application.

Skew and jitter are kept at a minimum through the advanced design and manufacturing technologies shared by ON Semiconductor's ECLinPS Plus family.

Jitter for the NBLVEP16VR is typically below 0.5ps and duty cycle skew is 5ps, ensuring the highest possible signal stability for clock signals.

The device employs ON Semiconductor's ultraprecise bipolar process to offer output rise/fall times and propagation delay at a maximum of 300ps.

Offering unparalleled flexibility in module design, the NBLVEP16VR accepts both low voltage positively referenced emitter coupled logic (LVPECL) and negatively referenced ECL, and operates at 2.5, 3.3 and 5V.

"The NBLVEP16VR excels as both a buffer and an amplifier for any major VCXO, TCXO and SAW application", said Bill Schromm, ON Semiconductor Vice President and Director for High Frequency Timing and Interface Products.

"Because it delivers superior performance and selectable current source outputs, this amplifier is the best receiver/driver on the market for high-performance oscillator applications".

Packaged in a space-saving 3 x 3mm QFN-16 package, the NBLVEP16VR is priced at $2.85 per unit in 10,000-unit quantities.

The device is also available in wafer and bare die for space-conscious timing modules and additional design flexibility.

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