AD6458 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD6458 Datasheet PDF : 12 Pages
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AD6458
22
20
18
16
14
FIF = 13MHz, ZS = 50Ω
12
10
FIF = 26MHz, ZS = 50Ω
8
FIF = 13MHz, ZS = 400Ω
6
80 120 160 200 240 280 320 360 400 440
RF FREQUENCY – MHz
Figure 5. Mixer Noise Figure vs. RF Frequency
35
= 7.7dB
30
= 0.26dB
25
20
15
10
5
0
7.0
7.2
7.4
7.6
7.8
8.0
8.2
8.4
NOISE FIGURE – dB
Figure 6. Mixer Noise Figure Histogram, RS = 1 kΩ,
FRF = 83 MHz, FIF = 13 MHz
2.0
1.6
RSH, VGAIN = 1.0V
5.5
CSH, VGAIN = 0.2V
5.0
1.2
4.5
RSH, VGAIN = 2.2V
CSH, VGAIN = 1.0V
0.8
0.4
RSH, VGAIN = 0.2V
4.0
CSH, VGAIN = 2.2V
3.5
0
3.0
50 100 150 200 250 300 350 400 450 500 550
RF FREQUENCY – MHz
Figure 7. Mixer Input Impedance vs. RF Frequency,
VPOS = 3.0 V, TA = +25°C
15
VGAIN = 0.2V
10
5
VGAIN = 1.2V
0
–5
VGAIN = 2.2V
–10
–15
50
100 150 200 250 300 350 400 450 500 550
RF FREQUENCY – MHz
Figure 8. Mixer Conversion Gain vs. RF Frequency,
TA = +25 °C, VPOS = 3.0 V, VREF =1.2 V, FIF =13 MHz
12
10
VGAIN = 0.2V
8
6
4
2
0
VGAIN = 1.5V
–2
–4
–6
VGAIN = 2.2V
–8
–10
10 14 18 22 26 30 34 38 42 46 50 54
IF FREQUENCY – MHz
Figure 9. Mixer Conversion Gain vs. IF Frequency,
TA = +25 °C, VPOS = 3 V, VREF = 1.2 V, FRF = 250 MHz
15
10
VPOS = 3V TO 3.6V
TA = –25°C TO +85°C
5
0
–5
–10
–15
0
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 10. Mixer Conversion Gain vs VGAIN, VREF = 1.2 V,
FIF =13 MHz, FRF = 83 MHz
–6–
REV. 0
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