Alliance Semiconductor
Final Specification
P2781/82/84
Nov, 2002 PulseCore – A Division of Alliance Semiconductor
Revision F 3160 De La Cruz Blvd., Suite 200 • Santa Clara • CA • 95054
Tel (408) 748-6988 • Fax (408) 748-0009
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®
Table 2 - Loop Filter Selection Table VDD 3.3V
NOTE: The BW % value is representative of typical conditions.
BW=+/-0.50% BW=+/-0.75% BW=+/-1.00% BW=+/-1.25%
INPUT
(MHz) FS1 FS0 C1 (pF) C2 (pF) R1
(ohms) C1 (pF) C2 (pF) R1
(ohms) C1 (pF) C2 (pF) R1
(ohms) C1 (pF) C2 (pF) R1
(ohms)
3 0 0 270 330,000 220 270 330,000 300 270 100,000 390 560 100,000 510
4 0 0 270 100,000 270 270 100,000 390 270 100,000 560 560 100,000 680
5 0 0 270 100,000 390 270 100,000 560 270 100,000 750 560 100,000 910
6 0 0 270 100,000 510 270 100,000 750 270 10,000 1,000 680 6,800 1,200
7 0 0 270 100,000 620 270 100,000 1,000 270 5,600 1,200 330 3,300 1,200
8 0 0 270 100,000 820 270 100,000 1,200 270 12,000 2,200 680 6,800 2,200
9 0 0 270 100,000 1,000 270 100,000 1,500 270 5,600 2,200 270 2,700 2,200
10 0 1 270 100,000 330 270 100,000 510 270 100,000 750 560 100,000 910
11 0 1 270 100,000 390 270 100,000 560 270 100,000 866(1%) 560 100,000 1,100
12 0 1 270 100,000 510 270 100,000 750 270 10,000 1,000 680 6,800 1,200
13 0 1 270 100,000 560 270 100,000 820 270 12,000 1,200 470 4,700 1,200
14 0 1 270 100,000 620 270 100,000 1,000 270 5,600 1,200 330 3,300 1,200
15 0 1 270 100,000 750 270 100,000 1,100 270 3,900 1,200 330 3,300 1,500
16 0 1 270 100,000 820 270 100,000 1,200 270 12,000 2,200 680 6,800 2,200
17 0 1 270 100,000 910 270 100,000 1,300 270 10,000 2,200 390 3,900 2,200
18 0 1 270 100,000 1,000 270 100,000 1,500 270 5,600 2,200 270 2,700 2,200
19 0 1 270 100,000 1,200 270 100,000 1,600 270 3,300 2,200 270 2,700 2,700
20 1 0 270 100,000 330 270 100,000 560 270 100,000 750 560 100,000 910
21-22 1 0 270 100,000 390 270 100,000 620 270 100,000 866(1%) 560 100,000 1,100
23-24 1 0 270 100,000 510 270 100,000 750 270 10,000 1,000 680 6,800 1,200
25-26 1 0 270 100,000 560 270 100,000 820 270 12,000 1,200 470 4,700 1,200
27-28 1 0 270 100,000 620 270 100,000 1,000 270 6,800 1,200 330 3,300 1,200
29-30 1 0 270 100,000 750 270 100,000 1,100 270 3,900 1,200 330 3,300 1,500
31-32 1 0 270 100,000 820 270 100,000 1,200 270 12,000 2,200 680 6,800 2,200
33-34 1 0 270 100,000 910 270 100,000 1,300 270 10,000 2,200 390 3,900 2,200
35-36 1 0 270 100,000 1,000 270 100,000 1,500 270 5,600 2,200 270 2,700 2,200
37-38 1 0 270 100,000 1,200 270 100,000 1,600 270 3,300 2,200 270 2,700 2,700
39-42 1 1 270 100,000 330 270 100,000 560 270 100,000 750 560 100,000 910
43-46 1 1 270 100,000 390 270 100,000 620 270 100,000 866(1%) 560 100,000 1,100
47-50 1 1 270 100,000 510 270 100,000 750 270 10,000 1,000 680 6,800 1,200
51-54 1 1 270 100,000 560 270 100,000 820 270 12,000 1,200 470 4,700 1,200
55-58 1 1 270 100,000 620 270 100,000 1,000 270 6,800 1,200 330 3,300 1,200
59-62 1 1 270 100,000 750 270 100,000 1,100 270 3,900 1,200 330 3,300 1,500
63-66 1 1 270 100,000 820 270 100,000 1,200 270 12,000 2,200 680 6,800 2,200
67-70 1 1 270 100,000 910 270 100,000 1,300 270 8,200 2,200 390 3,900 2,200
71-74 1 1 270 100,000 1,000 270 100,000 1,600 270 5,600 2,200 270 2,700 2,200
75-78 1 1 270 100,000 1,200 270 100,000 1,800 270 3,300 2,200 270 2,700 2,700
*Please contact factory for loop filter values not listed in the above table
(info@pulsecore.com; or Ext. 17 or 25)
C2 C1
R1
PIN 4 LF