Datasheet AD8309 (Analog Devices) - 6

AD8309 25 –103 24 –104 23 –105 22 –106 21 –107 20 –108 19 –109 RSSI SLOPE – mV/dB 18 RSSI INTERCEPT – dBV –110 17 –111 16 –112 15 –113 1 10 100 1000 1 10 100 1000 FREQUENCY – MHz FREQUENCY – MHz
Figure 13. RSSI Slope vs. Frequency Using Termination of Figure 16. RSSI Intercept vs. Frequency Using Termina- 52.3 Ω in Series with 4.7 nH tion of 52.3 Ω in Series with 4.7 nH
2ns PER HORIZONTAL DIVISION 14 12 10 LIMITER OUTPUTS 100mV PER VERTICAL DIVISION ADDITIONAL SUPPLY CURRENT 8 6 CURRENT – mA 4 2 2mV PER VERTICAL DIVISION LIMITER OUTPUT CURRENT 0 0 50 100 150 200 250 300 350 400 450 RLIM –
V Figure 14. Limiter Output at 300 MHz for a Sine Wave Figure 17. Additional Supply Current and Limiter Out- Input of –60 dBV (–47 dBm), Using an RLOAD of 50 Ω and an put Current vs. RLIM RLIM of 100 Ω
10 8 LMLO 6 TA = +85
8
C LMHI 4 TA = –40
8
C 2 LIMITER OUTPUTS 50mV PER VERTICAL DIVISION 0 INPUT –2 NORMALIZED TA = +25
8
C –4 1mV PER VERTICAL DIVISION –6 LIMITER PHASE RESPONSE – Degrees 12.5ns PER HORIZONTAL –8 DIVISION –10–60 –50 –40 –30 –20 –10 0 10 INPUT LEVEL – dBm Re 50
V Figure 15. Limiter Response at LMHI, LMLO with Pulsed Figure 18. Normalized Limiter Phase Response vs. Input Sine Input of –70 dBV (–57 dBm) at 50 MHz; RLOAD = 50 Ω, Level. Frequency = 100 MHz; TA = –40°C, +25°C and +85°C RLIM = 200 Ω –6– REV. B