AD6458 Ver la hoja de datos (PDF) - Analog Devices
Número de pieza
componentes Descripción
Fabricante
AD6458 Datasheet PDF : 12 Pages
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–8
–9
–10
VPOS = 3.6V
–11
TA = +25°C
–12
VPOS = 3.0V
TA = +25°C
–13
VPOS = 3.6V
TA = +85°C
VPOS = 3.0V
TA = +85°C
VPOS = 3.0V
TA = –25°C
–14
–15
0
VPOS = 3.0V
TA = –40°C
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 11. Mixer Input 1 dB Compression Point vs. VGAIN,
VREF = 1.2 V, FRF = 83 MHz, FIF = 13 MHz
AD6458
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
–55
–60
0
TA = +85°C
TA = +25°C
TA = –25°C
TA = –40°C
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 14. IF Amplifier/Demodulator Input 1 dB Compres-
sion Point vs. VGAIN, FIF =13 MHz, VREF = 1.2 V, TA = +25 °C,
VPOS = 3.0 V
70
VGAIN = 0.2V
60
50
40
VGAIN = 1.0V
30
VGAIN = 1.5V
20
10
VGAIN = 2.25V
0
5
10
15
20
25
30
35
40
45
INTERMEDIATE FREQUENCY – dB
Figure 12. IF Amplifier and Demodulator Gain vs.
Frequency, TA = +25°C, VPOS = 3.0 V, VREF =1.2 V
12000
3.5
C SHUNT, VGAIN = 0.2V
10000 R SHUNT, VGAIN = 2.2V
3.0
8000
C SHUNT, VGAIN = 1.0V
2.5
6000
4000
C SHUNT, VGAIN = 2.2V 2.0
R SHUNT, VGAIN = 1.0V
1.5
2000
R SHUNT, VGAIN = 0.2V
1.0
0
0.5
0 10 20 30 40 50 60 70 80 90 100
IF FREQUENCY – MHz
Figure 15. IF Amplifier Input Impedance vs. Frequency,
TA = +25°C, VPOS = 3.0 V, VREF = 1.2 V
70
60
TA = –40°C TO +85°C
50
40
30
20
10
0
–10
0
0.5
1.0
1.5
2.0
2.5
VGAIN – Volts
Figure 13. IF Amplifier and Demodulator Gain vs.
VGAIN, TA = +25°C, VPOS = 3.0 V, FIF = 13 MHz, VREF = 1.2 V
1
0.8
0.6
0.4
0.2
MIXER
0
–0.2
IF AMP/DEMOD
–0.4
–0.6
–0.8
–1
0
0.5
1
1.5
2
2.5
GAIN VOLTAGE – Volts
Figure 16. AD6458 Gain Error vs. Gain Control Voltage,
Representative Part
REV. 0
–7–
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