GENERAL DESCRIPTION

The 843201-375 is a low phase-noise frequency margining

synthesizer. In the default mode, the device nominally generates a

375MHz LVPECL output clock signal from a 25MHz crystal input.

There is also a frequency margining mode available where the

device can be confi gured, using control pins, to vary the output

frequency up or down from nominal by 5. The 843201-375 is

provided in a 16-pin TSSOP package.

FEATURES

? One 375MHz nominal LVPECL output

? Crystal oscillator interface designed for 25MHz, 18pF parallel

resonant crystal

? Output frequency can be varied ± 5 from nominal

? VCO range: 700MHz - 800MHz

? RMS phase jitter @ 375MHz, using a 25MHz crystal

(12kHz - 20MHz): 0.72ps (typical) @ 3.3V

? Output supply modes

Core/Output

3.3V/3.3V

3.3V/2.5V

2.5V/2.5V

? 0°C to 70°C ambient operating temperature

? Available in lead-free (RoHS 6) package

? Functional replacement part 8T49N241-dddNLGI