AD8341 Просмотр технического описания (PDF) - Analog Devices

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AD8341

1.5 GHz to 2.4 GHz RF Vector Modulator

Analog Devices 

–147

–148

–149

–150

RF PIN = +5dBm

RF PIN = 0dBm

–151

–152

–153

RF PIN = –5dBm

NO RF INPUT

–154

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

GAIN SETPOINT

Figure 9. Output Noise Floor vs. Gain Setpoint, Noise in dBm/Hz, No Carrier,

and With 1900 MHz Carrier (Measured at 20 MHz Offset)

Pin = −5, 0, and +5 dBm

0

GAIN SETPOINT = 1.0

–2

–4

–6

GAIN SETPOINT = 0.5

–8

–10

–12

GAIN SETPOINT = 0.25

–14

–16

–18

GAIN SETPOINT = 0.1

–20

–22

–24

–26

–28

1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

FREQUENCY (MHz)

Figure 10. Gain vs. Frequency at Different Gain Setpoints,

Phase Setpoint = 0°

–146

–147

–148

–149

–150

–151

–152

–153

–154

1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

FREQUENCY (MHz)

Figure 11. Output Noise Floor vs. Frequency, Maximum Gain,

No RF Carrier, Phase Setpoint = 0°

AD8341

0

–1

–40°C

–2

+25°C

–3

–4

–5

–6

+85°C

–7

–8

–9

–10

1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

FREQUENCY (MHz)

Figure 12. Gain Magnitude vs. Frequency and Temperature,

Maximum Gain, Phase Setpoint = 0°

0

FUNDAMENTAL POWER, 1899MHz, 1900MHz

–10

–20

–30

–40

–50 SECOND BASEBAND HARMONIC PRODUCT,

1898MHz, 1902MHz

–60

–70

–80

–90

THIRD BASEBAND HARMONIC PRODUCT,

1897MHz, 1903MHz

–100

100 200 300 400 500 600 700 800 900 1000

DIFFERENTIAL BB LEVEL (mV p-p)

Figure 13. Baseband Harmonic Distortion (I and Q Channel,

RF Input = 0 dBm, Output Balun and Cable Losses of Approximately

2 dB Not Accounted for in Plot)

12

–40°C

10

+25°C

8

6

+85°C

4

2

0

1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

FREQUENCY (MHz)

Figure 14. Output 1 dB Compression Point vs. Frequency and

Temperature, Maximum Gain, Phase Setpoint = 0°

Rev. 0 | Page 7 of 20

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