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SY89429AZC Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY89429AZC Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 9 page 1 Precision Edge® SY89429A Micrel, Inc. 26 27 28 1 2 3 4 18 17 16 15 14 13 12 25 24 23 22 21 20 19 5 6 7 8 9 10 11 VCC_QUIET XTAL1 S_CLOCK S_DATA LOOP_REF S_LOAD LOOP_FILTER M[8] M[4] M[7] M[5] N[1] M[6] N[0] PLCC TOP VIEW The SY89429A is a general purpose, synthesized clock source targeting applications that require both serial and parallel interfaces. Its internal VCO will operate over a range offrequenciesfrom400MHzto 800MHz.The differential PECL output can be configured to be the VCO frequency divided by 2, 4, 8 or 16. With the output configured to divide the VCO frequency by 2, and with a 16MHz external quartz crystal used to provide the reference frequency, the output frequency can be specified in 1MHz steps. FEATURES DESCRIPTION PROGRAMMABLE FREQUENCY SYNTHESIZER (25MHz to 400MHz) n Improved jitter performance over SY89429 n 25MHz to 400MHz differential PECL outputs n ±25ps peak-to-peak output jitter n Minimal frequency over-shoot n Synthesized architecture n Serial 3 wire interface n Parallel interface for power-on n Internal quartz reference oscillator driven by quartz crystal or PECL source n PECL output can operate with either +3.3V or +5V VCC_OUT power supply n Externalloopfilteroptimizesperformance/cost n Applications note (AN-06) for ease of design-ins n Available in PLCC and SOIC 28-pin packages PIN CONFIGURATION APPLICATIONS n Workstations n Advanced communications n High end consumer n High-performance computing n RISC CPU clock n Graphics pixel clock n Test equipment n Other high-performance processor-based applications GND (TTL) FOUT 17 12 N[1] VCC_OUT 18 11 VCC (TTL) GND 15 14 TEST /FOUT 16 13 1 M[0] M[1] M[2] M[3] M[4] M[5] M[6] M[7] M[8] N[0] 28 /P_LOAD VCC1 XTAL2 XTAL1 LOOP_REF LOOP_FILTER VCC_QUIET S_LOAD S_DATA S_CLOCK 27 26 25 24 23 22 21 20 19 2 3 4 5 6 7 8 9 10 SOIC TOP VIEW Rev.: K Amendment: /0 Issue Date: July 2009 Precision Edge® Precision Edge is a registered trademark of Micrel, Inc. Precision Edge® SY89429A |
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