al2007la Samsung Semiconductor, Inc., al2007la Datasheet - Page 9

• Manufacturer Part Number: al2007la
• Description: Description = AL2007LA 20MHz ~ 170MHz FSPLL ;; Function = FSPLL ;; Configuration = 20MHz~170MHz PLL ;; Library Type = STD90 ;; Characteristic = 3.3V/3.5mA
• Manufacturer: Samsung Semiconductor, Inc.

0.35 m 20MHZ-170MHZ FSPLL
CORE LAYOUT GUIDE
— The digital power(VDD,VSS) and the analog power(VDA,VSSA) must be dedicated to PLL only and seperated.
— The PIA pad is used as a FILTER pad that contains only ESD production diodes without any resistors and
— The FOUT and FILTER pins must be placed far from the internal signals in order to avoid overlapping signal
— The blocks having a large digital switching current must be located away from the PLL core.
— The PLL core must be shielded by guardring.
— For the FOUT pad, you can use a custom drive buffer or POT12 buffer considering the drive current.
WITHOUT XTAL-DRIVER USERS GUIDE
— There are two crystal driver cell (XTAL-OSC and PSOSCM2) options for the AL2007LA PLL core.
If the dedicated VDD and VSS is not allowed that of the least power consuming block is shared with the PLL.
buffers.
lines.
1. If the crystal component not used , an external clock source is applied to the FIN
*
2. If the crystal component not used , an external clock I/O Buffer offered from Samsung's STD90 library is
–
*
Please contact an SEC application engineer when using a crystal.
recommanded for use
When implementing an embedded PLL block, the following pins must be bypassed externally for testing
the PLL locking function:
Without Xtal-driver : FIN,FILTER,FOUT,VDDA,VSSA,VDD and VSS.
AL2007LA
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