參數(shù)資料
型號: AD8309ARU
廠商: Analog Devices Inc
文件頁數(shù): 17/20頁
文件大?。?/td> 0K
描述: IC LOGARITHM AMP 100DB 16-TSSOP
標準包裝: 1
類型: 對數(shù)放大器
應用: 接收器信號強度指示(RSSI)
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應商設(shè)備封裝: 16-TSSOP
包裝: 管件
REV. B
AD8309
–6–
FREQUENCY – MHz
25
15
1
RSSI
SLOPE
mV/dB
24
23
22
21
20
19
18
17
16
10
100
1000
Figure 13. RSSI Slope vs. Frequency Using Termination of
52.3
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 and an
RLIM of 100
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 ,
RLIM = 200
FREQUENCY – MHz
–103
–113
1
RSSI
INTERCEPT
dBV
–104
–105
–106
–107
–108
–109
–110
–111
–112
10
100
1000
Figure 16. RSSI Intercept vs. Frequency Using Termina-
tion of 52.3
in Series with 4.7 nH
RLIM
12
0
CURRENT
mA
10
8
6
4
2
0
100
200
300
400
450
LIMITER OUTPUT CURRENT
ADDITIONAL SUPPLY CURRENT
150
250
350
50
14
Figure 17. Additional Supply Current and Limiter Out-
put Current vs. RLIM
INPUT LEVEL – dBm Re 50
10
–60
NORMALIZED
LIMITER
PHASE
RESPONSE
Degrees
8
6
4
2
0
–10
–50
–30
–20
–10
10
–2
–4
–6
–8
–40
0
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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