AD6432AST Просмотр технического описания (PDF) - Analog Devices
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AD6432AST Datasheet PDF : 20 Pages
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11
10.5
10
9.5
RIN = 50Ω, IF = 45MHz
RIN = 50Ω, IF = 26MHz
9
8.5
RIN = 50Ω, IF = 13MHz
8
RIN = 400Ω, IF = 13MHz
7.5
7
6.5
6
150
200
250
300
350
400
450
RF FREQUENCY – MHz
Figure 3. Rx Mixer Noise Figure vs. RF Frequency,
TA = +25°C, VPOS = 3 V, VGREF = 1.2 V, VGAIN = 0.2 V
900
5.0
RS
800
VGAIN = 2.4V
CS
VGAIN = 0.2V
4.5
700
RS
VGAIN = 1.2V
600
CS
4.0
RS
VGAIN = 1.2V
500
VGAIN = 0.2V
400
3.5
300
CS
VGAIN = 2.4V 3.0
200
100
50
2.5
100 150 200 250 300 350 400 450 500 550
FREQUENCY – MHz
Figure 4. Rx Mixer Input Impedance vs. RF Frequency,
VPOS = 3 V, TA = +25°C, VGREF = 1.2 V
16
14
12
VGAIN = 0.2V
10
8
6
4
2
VGAIN = 1.5V
0
–2
–4
–6
VGAIN = 2.4V
150 175 200 225 250 275 300 325 350
RF FREQUENCY – MHz
Figure 5. Rx Mixer Conversion Gain vs. RF Frequency,
TA = +25°C, VPOS = 3 V, VGREF = 1.2 V, FIF = 26 MHz
AD6432
20
15
VGAIN = 0.2V
10
5
VGAIN = 1.5V
0
VGAIN = 2.4V
–5
10 14 18 22 26 30 34 38 42 46 50
IF FREQUENCY – MHz
Figure 6. Mixer Conversion Gain vs. IF Frequency,
TA = +25°C, VPOS = 3 V, VGREF = 1.2 V, FRF = 250 MHz
70
60
AMP/DEMOD, VPOS = 2.7V TO 3.6V
50
40
30
20
MIXER, VPOS = 2.7V TO 3.6V
10
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE – C
Figure 7. Rx Mixer Conversion Gain and IF Amplifier/
Demodulator Gain vs. Temperature, VGAIN = 0.2 V,
VGREF = 1.2 V, FIF = 26 MHz, FRF = 250 MHz
–10
–11
VPOS = 2.7V, TA = +85 C
–12
VPOS = 2.7V, TA = +25 C
–13
VPOS = 3.6V, TA = +85 C
–14
VPOS = 2.7V, TA = –25 C
–15
VPOS = 3.6V, TA = –40 C
–16
0
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 8. Rx Mixer Input 1 dB Compression Point vs.
VGAIN, VGREF = 1.2 V, FRF = 250 MHz, FIF = 26 MHz
REV. 0
–7–
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