TriQuint’s TQ2060 is a high-frequency clock generator. It utilizes a 35 MHz to 50 MHz TTL input to generate a 350 MHz to 500 MHz PECL output. The TQ2060 has a completely self-contained Phase-Locked Loop (PLL) running at 700 MHz to 1000 MHz. This stable PLL allows for a low period-to-period output jitter of 70 ps (max), and enables tight duty cycle control of 55 to 45 (worst case).

Features

• Output frequency range: 350 MHz to 500 MHz

• One differential PECL output: 600 mV (min) swing

• Common-mode voltage:

VDD –1.2 V (max),

VDD –1.6 V (min)

• Period-to-period output jitter:

25 ps peak-to-peak (typ)

70 ps peak-to-peak (max)

• Reference clock input: 35 MHz to 50 MHz TTL-level crystal oscillator

• Self-contained loop filter

• Optional 200-ohm pull-down resistors for AC-coupled outputs