DESCRIPTIONS

The PLL102-108 is a zero delay buffer that distributes a single-ended clock input to ten pairs of differential clock outputs and one feedback clock output. Output signal duty cycles are adjusted to 50, independent of the duty cycle at CLK_INT. The PLL can be bypassed for test purposes by strapping AVdd to ground.

FEATURES

? PLL clock distribution optimized for Double Data Rate SDRAM application up to 266Mhz.

? Distributes one clock Input to one bank of ten differential outputs.

? Track spread spectrum clocking for EMI reduction.

? Programmable delay between CLK_INT and CLK[T/C] from –0.8ns to +3.1ns by programming CLKINT and FBOUT skew channel, or from –1.1ns to +3.5ns if additional DDR skew channels are enabled.

? Four independent programmable DDR skew channels from –0.3ns to +0.4ns with step size ±100ps.

? Support 2-wire I2C serial bus interface.

? 2.5V Operating Voltage.

? Available in 48-Pin 300mil SSOP.