AD6432 Просмотр технического описания (PDF) - Analog Devices
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производитель
AD6432 Datasheet PDF : 20 Pages
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AD6432
70
60
50
40
30
20
10
0
–10
10
VGAIN = 0.2V
VGAIN = 0.5V
VGAIN = 1.5V
VGAIN = 2.4V
15
20
25
30
35
40
45
INTERMEDIATE FREQUENCY – MHz
Figure 9. IF Amplifier and Demodulator Gain vs. IF
Frequency, TA = +25°C, VPOS = 3 V, VGREF = 1.2 V
0.4
0.3
0.2
IF AMP/DEMOD
0.1
MIXER
0
–0.1
–0.2
0
0.5
1.0
1.5
VGAIN – Volts
2.0
2.5
Figure 12. Gain Error vs. Gain Control Voltage, TA = +25°C,
VPOS = 3 V, VGREF = 1.2 V, FRF = 250 MHz, FIF = 26 MHz
13000
4.0
12000
11000
10000
CS
VGAIN = 0.2V
3.8
RS
3.6
VGAIN = 2.4V
3.4
9000
8000
CS
3.2
VGAIN = 1.2V
3.0
7000
6000
CS
VGAIN = 2.4V
2.8
RS
VGAIN = 1.2V
2.6
5000
2.4
4000
RS
VGAIN = 0.2V
2.2
3000
2.0
10
15
20
25
30
35
40
45
50
IF INPUT FREQUENCY – MHz
Figure 10. IF Amplifier Input Impedance vs. Frequency,
TA = +25°C, VPOS = 3 V, VGREF = 1.2 V
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–1.2
–1.4
10
15
20
25
30
35
40
45
DEMODULATOR VCO FREQUENCY – MHz
Figure 13. Demodulator Quadrature Error vs. FREF
Frequency, TA = +25°C, VPOS = 3 V
0
–10
–20
–30
–40
–50
–60
0
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 11. IF Amplifier/Demodulator Input 1 dB
Compression Point vs. VGAIN , FIF = 26 MHz,
VGREF = 1.2 V, TA = +25°C, VPOS = 3 V
–80
–85
–90
IF = 26MHz
–95
–100
–105
–110
0.1
IF = 13MHz
1.0
10
100
FREQUENCY OFFSET – kHz
1000
Figure 14. PLL Phase Noise vs. Frequency, VPOS = 3 V,
CFLTR =1 nF, RFLTR =1 kΩ, FREF = 13 MHz
–8–
REV. 0
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