GENERAL DESCRIPTION

The 843022 is a Gigabit Ethernet Clock Generator and a

member of the HiPerClocksTM family of high performance

devices from IDT. The 843022 uses a 25MHz crystal to

synthesize 125MHz or 62.5MHz. The 843022 has excellent phase jitter performance, over the 1.875MHz – 20MHz

integration range. The 843022 is packaged in a small 8-pin TSSOP,

making it ideal for use in systems with limited board space.

FEATURES

• One differential 3.3V LVPECL output

• Crystal oscillator interface designed for 25MHz,

18pF parallel resonant crystal

• Output frequencies: 125MHz or 62.5MHz (selectable)

• RMS phase jitter @ 125MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.39ps (typical)

Offset Noise Power

100Hz ................-96.5 dBc/Hz

1kHz ..............-122.5 dBc/Hz

10kHz ..............-132.1 dBc/Hz

100kHz ..............-131.5 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

• Available in lead-free (RoHS 6) package