Peregrine Semiconductor Corporation ® 8 Doc. 79/0001~02A
Evaluation Kit Configuration
The PE9601 Evaluation Board is configured with an on-board VCO, TCXO
reference and a second order passive loop filter. The VCO tuning range is from
1865 MHz to 2055 MHz and the reference oscillator runs at 10 MHz. The pas-
sive loop filter is designed for a 1 MHz comparison frequency and a 1918 MHz
output frequency with unity gain crossover at 75 kHz, phase margin of 66
degrees and 1.2 dB of peaking. The data set provided was measured in this con-
figuration with the default jumper settings shown in Figure 1. Figure 3 shows a
typical set-up for evaluating the PLL using the Evaluation Kit.
Evaluation Kit Set-up
1. Start Microsoft Windows. Insert the Peregrine CD into CDROM drive and
open CD directory. Click Eval Kit Documentation, PE9601-2.2 GHz
Integer-N PLL, and then Evaluation Board Software. Choose the option
of "Save and run the 9601.exe file in your hard disk" or "Run it from CD".
Either way, then run Setup.exe from your hard disk directory and follow the
instruction on the screen. This will install the Evaluation Kit Application
Software. Some computers might not have cb.cfg nor CBERCODE.TXT
file for error log. In this case, you would get an error message during the
initial start up of the software. However, the software will work.
2. There are two sets of jumpers used to configure the Evaluation Board (see
Figure 1). The connector J3 and REF Selector (JP1) select an option to use
the 10 MHz on-board reference or an external reference. Setting the
BMODE Control switch (BMODE switch S3-1) to the "on" position
enables direct mode programming. In the direct mode, the PE9601 can be
programmed using the fifteen on-board switches. Setting the BMODE Con-
trol switch (BMODE switch S3-1) to the "off" position and the A3-S_mode
switch (A3-S_Mode switch S3-8) to the "on" position the serial program-
ming mode is enabled. The Default jumper and switch settings are shown
in Figure 1 which will place the part into serial programming mode. Pere-
grine Semiconductor recommends that the default settings be used initially
to bring up the evaluation board and duplicate the enclosed measured data.
3. Verify a jumper is placed on the connector J3 and REF Selector (JP1) is
positioned to select the on-board reference as shown in Figure 1. The con-
nector J3 supplies power to the on-board TCXO. Do not connect any exter-
nal reference to the connector labeled Ext. REF In (J10) if the on-board
reference is selected. To use an external reference, remove the jumper from
the connector J3 to disable the on-board reference and re-position the
jumper on REF Selector (JP1) as shown in Figure 2. Connect the external
reference to the connector labeled Ext. REF In (J10).
