参数资料
型号: TL441N
厂商: TEXAS INSTRUMENTS INC
元件分类: 模拟运算功能
英文描述: LOG OR ANTILOG AMPLIFIER, 40 MHz BAND WIDTH, PDIP16
封装: PLASTIC, DIP-16
文件页数: 6/15页
文件大小: 226K
代理商: TL441N
TL441
LOGARITHMIC AMPLIFIER
SLVS328 – OCTOBER 2000
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
2 k
2 k
Origin
20 k
2 k
2 k
Slope
A1
A2
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
F
Output
1
Input
2
Output
2
TL592
0.2
F
1 k
1 k
Gain Adj.
2.2 k
2.2 k
2.2 k
0.2
F
0.2
F
1 k
1 k
0.2
F
Gain Adj. = 400
For 30 dB
Gain Adj. = 400
For 30 dB
0.2
F
TL592
50
50
50
Open
CA2 CA2’
Y
Z
CB2 CB2’
A1
A2
B1
B2
TL441
10
k
10
k
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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