Analog Devices AD6122 Manual page 9

40
20
0
T = –40 C
A
–20
T = +85 C
A
–40
–60
–80
0.5 1.0
Figure 12. IF Amplifier Response Curve: Gain vs.
= –40 ° C, +25 ° C, +85 ° C
VGAIN, T
A
45
35
25
15
GAIN ERROR
5
–5
–15
–25
–35
–45
–55
–65
–75
0.5 0.9 1.3
Figure 13. IF Amplifier Gain and Error vs. VGAIN
5.0
0
–5.0
–10.0
–15.0
–20.0
–25.0
0.5 0.9 1.3
Figure 14. IF Amplifier Input IP3 vs. VGAIN
REV. B
T = +25 C
A
1.5 2.0 2.5
VGAIN – V
6.0
5.0
4.0
3.0
2.0
1.0
0
–1.0
–2.0
GAIN
–3.0
–4.0
–5.0
–6.0
1.7 2.1 2.5
VGAIN – V
1.7 2.1 2.5
VGAIN – V
–24
–25
–26
–27
–28
2.5 2.7
Figure 15. IF Amplifier Input IP3 vs. Supply Voltage
–23
–24
–25
–26
50 100
Figure 16. IF Amplifier Input IP3 vs. Frequency
30.0
25.0
20.0
313MHz
15.0
238MHz
10.0
5.0
–10.0 0
Figure 17. IF Amplifier Noise Figure vs. Gain
–9–
AD6122
2.9 3.1 3.3 3.5
SUPPLY VOLTAGE – V
150 200 250 300
FREQUENCY – MHz
133MHz
10.0 20.0 30.0
GAIN – dB
3.7
350
40.0