AD8309 datasheet(6/20 Pages) AD

6 / 20 page

REV. B

AD8309

–6–

FREQUENCY – MHz

100

1000

Figure 13. RSSI Slope vs. Frequency Using Termination of

52.3

Ω in Series with 4.7 nH

2ns PER HORIZONTAL DIVISION

LIMITER OUTPUTS

100mV PER VERTICAL DIVISION

2mV PER VERTICAL DIVISION

Figure 14. Limiter Output at 300 MHz for a Sine Wave

Input of –60 dBV (–47 dBm), Using an RLOAD of 50 Ω and an

RLIM of 100

Ω

12.5ns PER HORIZONTAL

DIVISION

1mV PER VERTICAL DIVISION

LIMITER OUTPUTS

50mV PER VERTICAL DIVISION

INPUT

LMLO

LMHI

Figure 15. Limiter Response at LMHI, LMLO with Pulsed

Sine Input of –70 dBV (–57 dBm) at 50 MHz; RLOAD = 50 Ω,

RLIM = 200

Ω

FREQUENCY – MHz

–103

–113

–104

–105

–106

–107

–108

–109

–110

–111

–112

100

1000

Figure 16. RSSI Intercept vs. Frequency Using Termina-

tion of 52.3

Ω in Series with 4.7 nH

RLIM –

100

200

300

400

450

LIMITER OUTPUT CURRENT

ADDITIONAL SUPPLY CURRENT

150

250

350

Figure 17. Additional Supply Current and Limiter Out-

put Current vs. RLIM

INPUT LEVEL – dBm Re 50

–60

–10

–50

–30

–20

–10

–2

–4

–6

–8

–40

TA = +85 C

TA = +25 C

TA = –40 C

Figure 18. Normalized Limiter Phase Response vs. Input

Level. Frequency = 100 MHz; TA = –40°C, +25°C and +85°C

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