參數資料
型號: TL441N
廠商: Texas Instruments, Inc.
元件分類: 運動控制電子
英文描述: LOGARITHMIC AMPLIFIER
中文描述: 對數放大器
文件頁數: 13/14頁
文件大小: 233K
代理商: TL441N
TL441AM
LOGARITHMIC AMPLIFIER
SLFS038 – JUNE 1976 – REVISED FEBRUARY 1989
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
2 k
2 k
Origin
20 k
2 k
2 k
Slope
A1
A2
Y
Y
1/2
TL441
Input
A
Output
W
+
+
NOTE: Adjust the slope to correspond to the base “a”.
Exponential to any base: W = a.
Figure 18. Raising a Fixed Number to a Variable Power
+
20 k
20 k
Input
1
2.2 k
0.2
μ
F
Output
1
Input
2
Output
2
TL592
TL592
0.2
μ
F
1 k
1 k
Gain Adj.
2.2 k
2.2 k
2.2 k
0.2
μ
F
0.2
μ
F
1 k
1 k
0.2
μ
F
Gain Adj. = 400
For 30 dB
Gain Adj. = 400
For 30 dB
0.2
μ
F
TL592
TL592
50
50
50
Open
Open
CA2CA2’
10
k
Y
Y
Z
Z
CB2CB2’
10
k
A1
A2
B1
B2
TL441
VCC –
Gain Adj.
+
+
+
50
+
+
Figure 19. Dual-Channel RF Logarithmic Amplifier With 50-dB Input Range Per Channel at 10 MHz
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