===================================================================

HCMOS PHASE-LOCKED LOOP DESIGN PROGRAM 
Revised and updated version 2.0
for HC/HCT4046/7046A and HCT9046A.
==================================================================
                                         

The PLL design tool enables you to design a complete HCMOS-based 
PLL including peripheral components. It's for use with Philips' 
74HC/HCT4046A,7046A and 74HCT9046A HCMOS circuits, but it can 
also be used to evaluate and modify existing designs, for example 
with the HEF4046. In this revised version 2.0, a choice for PLL 
loop parameters can be made between the HC/HCT4046/7046A 
and the new HCT9046A type with improved bandgap controlled VCO 
and charge pump current output on PC2 to avoid any dead zone operation.

Besides giving you an approximation of a loop's complete dynamic 
behaviour, the program can generate a Bode plot to check loop 
stability.  All calculations are done with equations which are 
derived for high-gain loops and most of them can be found in 
literature, e.g. in 'Phaselock techniques', Wiley, New York, 
1979, Mr.Floyd Gardner and in 'Phase-locked loops', McGraw-Hill, 
New-York, 1984, Mr. Roland Best.

By eliminating much of the calculation drudgery of PLL design, 
the program invites you to experiment but will still reduce design 
time. This program is tailored to the Philips 74HC/HCT4046A/7046A 
and HCT9046A devices and does not guarantee that other brands 
of '4046 will respond as calculated by this program.

The program runs on every PC-DOS or MS-DOS compatible PC with 
a colour or monochrome monitor. To benefit from all the features 
of the program, a graphics card and/or an EPSON or IBM compatible 
printer is needed, but these are not essential.
The following graphic cards or compatibles are supported :
 - CGA
 - EGA
 - HERCULES
 - VGA
 - PC3270
 - SVGA/XVGA
 - MCGA

To obtain the design program, download PLL.ZIP from this web site 
and use PKUNZIP to decompress the files.  View the readme file and 
follow the instructions to load the files onto your hard drive.  
You should also obtain the PLL design guide manual for the 
HC(T)4046A/7046A/9046A which has more detailed design information.  
Contact your Philips representative and ask for document order number 
9397-750-00078.