GA1085 Overview
The core of the GA1085 is a Phase-Locked Loop (PLL) that continuously pares the reference clock (REFCLK) to the feedback clock (FBIN), maintaining a zero frequency difference between the two. Since one of the outputs (Q0 Q8) is always connected to FBIN, the PLL keeps the propagation delay between the outputs and the reference clock within 350 ps +1000 ps. The internal Voltage-Controlled Oscillator (VCO) has an...
GA1085 Key Features
- Wide frequency range: 24 MHz to 105 MHz
- Output configurations: Four outputs at fREF Four outputs at fREF /2 Two outputs at fREF /2 ␣ ␣ ␣ ␣ with adjustable phase
- Selectable Phase Shift: -2t, -t, +t, and +2t (t = 1/fVCO)
- Low output-to-output skew: 150 ps (max) within a group
- Near-zero propagation delay: -350 ps +1000 ps (max)
- TTL-patible with 30 mA output drive
- 28-pin J-lead surface-mount package