AD8340(2004) Просмотр технического описания (PDF) - Analog Devices

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AD8340
(Rev.:2004)

700 MHz to 1000 MHz RF Vector Modulator

Analog Devices 

90

120

60

150

1.5GHz

180

500MHz

1.5GHz

210

30

500MHz

0

330

240

300

270

IMPEDANCE CIRCLE

S22 PORT WITH 1 TO 1 TRANSFORMER

SDD22 PORT DIFFERENTIAL

Figure 21. Output Impedance Smith Chart (with Frequency Markers)

6

4

PHASE SETPOINT = 45°

2

PHASE SETPOINT = 0°

0

–2

–4

–6

–8

PHASE SETPOINT = 90°

–10

–12

–14

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

GAIN SETPOINT

Figure 22. Phase Error vs. Gain Setpoint by Phase Setpoint, 5 V dc, 25°C, 880 MHz

135

134

133

132

5.25V

131

130

129

5V

128

127

4.75V

126

125

–40 –30 –20 –10 0 10 20 30 40 50 60 70 80

TEMPERATURE (°C)

Figure 23. Supply Current vs. Temperature

AD8340

0

–5

–10

–15

–20

–25

–30

–35

–40

–45

–50

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

DSOP VOLTAGE (V)

Figure 24. Power Shutdown Attenuation

TEK FAST ACQ SAMPLE

200mV/DIV

3

2V/DIV

DSOP

RF OUTPUT

CH1 200mV Ω

CH3 2.0V

M 10.0ns 5.0GS/s

A CH2 160mV

TIME (10ns/DIV)

ET 200ps/pt 74.0ns

Figure 25. Power Shutdown Response Time

Rev. 0 | Page 9 of 20

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