参数资料
型号: AD9549A/PCBZ
厂商: Analog Devices Inc
文件页数: 71/76页
文件大小: 0K
描述: BOARD EVALUATION FOR AD9549A
设计资源: AD9549 Schematics
AD9549 Gerber Files
标准包装: 1
主要目的: 计时,时钟发生器
嵌入式:
已用 IC / 零件: AD9549A
主要属性: 8 kHz ~ 750 MHz 输入
次要属性: 差分输出
已供物品:
AD9549
Rev. D | Page 73 of 76
APPLICATIONS INFORMATION
SAMPLE APPLICATIONS CIRCUIT
CLK
CLKB
SYNCB
LOW-PASS
FILTER
AD9514
/1...../32
Δt
OUT0/
OUT0B
OUT1/
OUT1B
OUT2/
OUT2B
SYSCLK
INPUT A
INPUT B
06744-
059
AD9549
DDS/
DAC
REF A
REF B
DIFF HSTL OUTPUT
FDBK_IN
FDBK_INB
CMOS OUTPUT
LDDS/CMOS
LVPECL
Figure 59. AD9549 and AD9514 Precision Clock Distribution Circuit
Applications Circuit Features
Features of this applications circuit include the following:
Input frequencies down to 8 kHz; output frequencies up to
400 MHz
Programmable loop bandwidth down to <1 Hz
Automatic redundant clock switchover with user-selectable
rate-of-phase adjustment
Automatic Stratum 3/3E clock holdover, depending on the
configuration
Phase noise (fC = 122.3 MHz and 100 Hz loop bandwidth);
100 Hz offset: 107 dBc/Hz; 1 kHz offset: 142 dBc/Hz;
100 kHz offset: 157 dBc/Hz; two zero-delay outputs with
programmable postdivider and synchronization
Two additional outputs (nonzero delay) on the AD9549
Programmable skew adjustment on one AD9514 output
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