TQ1090

T R I Q U I N T S E M I C O N D U C T O R, I N C . Figure 1. Block Diagram FBIN 11 TQ1090 S1 10 REFCLK S0 9 8 GND 7 GND 6 GND 5 TEST 12 VDD 13 Phase Detector VCO 4 VDD 3 2 Q10 Q9 11-Output Configurable Clock Buffer Features Q0 14 GND 15 Q1 Q2 16 17 MUX Divide Logic ÷2 Output Buffers Group C Group A Group B 1 GND 28 27 S1 S0 Q8 Q7 VDD 18 26 VDD Wide frequency range: 33 MHz to 45 MHz 65 MHz to 90 MHz and 130 MHz to 180 MHz Output configurations: four outputs at fREF four outputs at 2x fREF two output at 4x fREF or five outputs at 1/2 x fREF three outputs at fREF two outputs at 2x fREF Selectable Phase Shift: –2t, –t, 0, +t (t = 1/fvco) Low output-to-output skew: 150 ps (max) within a group Near-zero propagation delay –350 ps ± 500 ps (max) or –350 ps ±700 ps (max) TTL-compatible I/O with 30 mA output drive Ideal for Power PC™ designs 28-pin J-lead surface-mount package SYSTEM TIMING PRODUCTS 19 20 21 22 23 24 25 GND Q3 Q4 VDD Q5 Q6 GND TriQuint’s TQ1090 is a configurable clock buffer which generates 11 outputs, operating over a wide range of frequencies from 33 MHz to 45MHz, 65 MHz to 90 MHz and 130 MHz to 180 MHz. The outputs are available at 1x, 2x and 4x, or at 1/2x, 1x and 2x, or at 1/4 x, 1/2 x and 1x the reference clock frequency, fREF. When one of the Group A outputs (Q0–Q4) is used as feedback to the PLL, all Group A outputs will be at fREF, all Group B outputs (Q5–Q8) will be at 2x fREF and all Group C outputs...