HFA3925 데이터 시트보기 (PDF) - Intersil
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HFA3925 Datasheet PDF : 9 Pages
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HFA3925
Typical Performance Curves (Continued)
0
-1
-20oC
70oC
-2
25oC
-3
-4
2.45GHz, VDD1 = VDD2 = VDD3 = +5V
-5
-20
-15
-10
-5
0
5
INPUT POWER (dBm)
FIGURE 9. GAIN COMPRESSION
Power Amplifier Spurious Response at Various Supply Voltages NOTE: All data measured at TA = 25oC and VG1, VG2 and VG3
adjusted for first stage quiescent current of 20mA, second stage current of 53mA and third stage current of 90mA, respectively.
50
40
30
20
10
9
2.45GHz, TONE SPACING 600kHz
6V
5V
3V
4V
13
17
21
25
FUNDAMENTAL POUT OF TONES (dBm)
70
65
60
55
50
45
40
35
15
3V
5V
6V
4V
2.45GHz, VDD1 = VDD2 = VDD3
17
19
21
23
25
FUNDAMENTAL POUT (dBm)
FIGURE 10. THIRD ORDER INTERMODULATION RATIO
FIGURE 11. SECOND HARMONIC RATIO
60
55
6V
50
5V
45
4V
40
2.45GHz, VDD1 = VDD2 = VDD3
35
15
17
19
21
23
FUNDAMENTAL POUT (dBm)
FIGURE 12. THIRD HARMONIC RATIO
3V
25
2-184
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