ꢀ ꢁꢁꢂ ꢃ ꢄ ꢅ
ꢆ ꢇꢈ ꢉ ꢁꢊ ꢋꢌ ꢍꢎ ꢏ ꢐꢈ ꢉ ꢊꢈ ꢀ ꢌꢋꢈ ꢍꢑ
ꢒ ꢓꢉ ꢉ ꢏꢔꢕ ꢁ ꢊꢓ ꢔ ꢖ ꢏ ꢁꢍ ꢑꢉ ꢔꢍ ꢐꢐ ꢏꢔ
ꢗ
SLUS249B − FEBRUARY 1997 − REVISED DECEMBER 2001
TYPICAL CHARACTERISTICS
Current Loop Power Stage and Feedback Gain
Current Loop Total Gain and Phase
vs
vs
Frequency
Frequency
80
60
40
120
100
Total Phase
80
60
Feedback Gain
40
20
20
Power Stage Gain
0
0
−20
−20
−40
−60
Total Loop Gain
−40
−60
−80
10
100
1 k
10 k
100 k
100M
10
100
1 k
10 k
100 k
100M
f − Frequency − MHz
f − Frequency − MHz
Figure 4
Figure 5
Voltage Loop Power Stage Gain
Voltage Loop Total Gain and Phase
vs
vs
Frequency
Frequency
80
60
100
50
0
Feedback Gain
Total Phase
40
20
Total Loop Gain
0
−50
−20
−100
Power Stage Gain
−40
−60
−150
10
100
1 k
10 k
100 k
1 M
10
100
1 k
10 k
100 k
1 M
f − Frequency − MHz
f − Frequency − MHz
Figure 6
Figure 7
14
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