Data Sheet

AD8340

GAIN SETPOINT

0

0.3

0.5

0.9

1.0

0.8

0.7

0.6

0.4

0.2

0.1

–142

–143

–152

–144

–145

–146

–147

–148

–149

–150

–151

NO RF INPUT

RF PIN = +5dBm

RF PIN = –5dBm

RF PIN = 0dBm

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

With Carrier (20 MHz Offset) PIN = −5 dBm, 0 dBm, and +5 dBm

FREQUENCY (MHz)

0

–14

–20

–2

–12

–16

–18

–4

–8

–6

–10

–22

–24

700

1000

950

900

850

800

750

GAIN SETPOINT = 1.0

GAIN SETPOINT = 0.5

GAIN SETPOINT = 0.1

Figure 10. Gain vs. Frequency at Different Gain Setpoints

(700 MHz to 1000 MHz), Phase Setpoint = 0°

RF FREQUENCY (MHz)

700

750

800

850

1000

900

950

–145

–146

–152

–147

–148

–149

–150

–151

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

No RF Carrier, Phase Setpoint = 0°

FREQUENCY (MHz)

700

750

800

850

1000

900

950

0

–0.5

–2.5

–1.0

–1.5

–2.0

Figure 12. Gain Flatness vs. Frequency, Maximum Gain, Phase Setpoint = 0°

0

–100

–90

–80

–70

–60

–50

–40

–30

–20

–10

100

200

300

400

500

600

700

800

900

1000

DIFFERENTIAL BASEBAND INPUT LEVEL (mV p-p)

(I OR Q CHANNEL DRIVEN AT 1MHz)

FUNDAMENTAL POWER, 879MHz, 881MHz

SECOND BASEBAND HARMONIC PRODUC T,

878MHz, 882MHz

THIRD BASEBAND HARMONIC PRODUC T,

877MHz, 883MHz

Figure 13. Baseband Harmonic Distortion

(I and Q Channel, RF Input = 0 dBm,

Balun and Cable Losses of Approximately 2 dB Not Accounted for in Plot)

FREQUENCY (MHz)

700

750

800

850

1000

900

950

14

12

0

10

8

6

4

2

TEMP = –40°C

TEMP = +85°C

TEMP = +25°C

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

Maximum Gain, Phase Setpoint = 0°

Rev. C | Page 7 of 20