AD8341

Rev. 0 | Page 7 of 20

GAIN SETPOINT

0

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

–147

–154

–153

–152

–151

–150

–149

–148

NO RF INPUT

RF PIN = –5dBm

RF PIN = 0dBm

RF PIN = +5dBm

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

FREQUENCY (MHz)

0

–28

–26

–24

–22

–20

–18

–16

–14

–12

–10

–8

–6

–4

–2

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

GAIN SETPOINT = 1.0

GAIN SETPOINT = 0.5

GAIN SETPOINT = 0.25

GAIN SETPOINT = 0.1

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

Phase Setpoint = 0°

FREQUENCY (MHz)

1500

2400

2300

2200

2100

2000

1900

1800

1700

1600

–146

–154

–153

–152

–151

–150

–149

–148

–147

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

No RF Carrier, Phase Setpoint = 0°

FREQUENCY (MHz)

1500

2400

2300

2200

2100

2000

1900

1800

1700

1600

0

–1

–2

–3

–4

–5

–6

–7

–8

–9

–10

–40

°C

+25

°C

+85

°C

Figure 12. Gain Magnitude vs. Frequency and Temperature,

Maximum Gain, Phase Setpoint = 0°

100

1000

900

800

700

600

500

400

300

200

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

DIFFERENTIAL BB LEVEL (mV p-p)

FUNDAMENTAL POWER, 1899MHz, 1900MHz

SECOND BASEBAND HARMONIC PRODUCT,

1898MHz, 1902MHz

THIRD BASEBAND HARMONIC PRODUCT,

1897MHz, 1903MHz

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)

FREQUENCY (MHz)

1500

2400

2300

2200

2100

2000

1900

1800

1700

1600

12

0

2

4

6

8

10

–40

°C

+25

°C

+85

°C

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

Temperature, Maximum Gain, Phase Setpoint = 0°