參數(shù)資料
型號: AD8309
廠商: Analog Devices, Inc.
元件分類: 運動控制電子
英文描述: 5 MHz to 500 MHz 100 dB Demodulating Logarithmic Amplifier with Limiter Output(具有限幅輸出為的5MHz到500MHz,輸入動態(tài)范圍為100dB的解調(diào)對數(shù)放大器)
中文描述: 5 MHz至500 MHz的100分貝解調(diào)輸出對數(shù)與限幅放大器(具有限幅輸出為的5MHz的到500MHz的輸入動態(tài)范圍為100dB的的解調(diào)對數(shù)放大器)
文件頁數(shù): 6/20頁
文件大?。?/td> 326K
代理商: AD8309
REV. 0
AD8309
–6–
FREQUENCY – MHz
25
15
1
R
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
INPUT 100mV PER VERTICAL DIVISION
Figure 14. Limiter Output at 300 MHz for a Sine Wave
Input of –60 dBV (–50 dBm), Using an R
LOAD
of 50
and an
R
LIM
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 at 50 MHz; R
LOAD
= 50
, R
LIM
= 200
FREQUENCY – MHz
–103
–113
1
R
–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
R
LIM
V
12
0
C
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. R
LIM
INPUT LEVEL – dBm Re 50
V
10
–60
N
8
6
4
2
0
–10
–50
–30
–20
–10
10
–2
–4
–6
–8
–40
0
T
A
= +85
8
C
T
A
= +25
8
C
T
A
= –40
8
C
Figure 18. Normalized Limiter Phase Response vs. Input
Level. Frequency = 100 MHz; T
A
= –40
°
C, +25
°
C and +85
°
C
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