參數(shù)資料
型號： THS7002IPWP
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： GREEN, PLASTIC, HTSSOP-28
文件頁數(shù)： 15/41頁
文件大?。?/td> 1203K
代理商： THS7002IPWP
THS7001, THS7002
70MHz PROGRAMMABLEGAIN AMPLIFIERS
SLOS214C OCTOBER 1998 REVISED MARCH 2007
22
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
output clamping (continued)
4
3
2
1
0
1
2
3
4
3
2
1
012345
OUTPUT VOLTAGE
vs
CLAMP VOLTAGE (VL)
Clamp Voltage V
RL=5.1 k
V
O
Output
V
oltage
V
VCC=±5 V & ±15 V
VI=5 V
Gain=+2 dB
RL=500
4
3
2
1
0
1
2
3
4
5
4
3
2
1
01234
OUTPUT VOLTAGE
vs
CLAMP VOLTAGE (VH)
Clamp Voltage V
RL=5.1 k
V
O
Output
V
oltage
V
VCC=±5 V & ±15 V
VI=5 V
Gain=+2 dB
RL=500
Figure 58. Output Voltage vs Clamp Voltage
The accuracy of this clamp is dependant on the amount of current flowing through the internal clamping diodes.
As is typical with all diodes, the voltage drop across this diode increases with current. Therefore, the accuracy
of the clamp is highly dependant upon the output voltage, the clamping voltage difference, and the output
current. The accuracy of the clamps with different load resistances are shown in Figure 59.
200
160
120
80
40
0
40
5
4
3
2
1
0
VL=4 V
NEGATIVE CLAMP ACCURACY (VL)
Expected Output Voltage V
RL=500
Gain = +2dB
VL=1 V
VL=2 V
VL=3 V
160
120
80
40
0
40
80
5
4
3
2
1
0
VL=4 V
RL=1 k
Gain = +2dB
VL=1 V
VL=2 V
VL=3 V
NEGATIVE CLAMP ACCURACY (VL)
Expected Output Voltage V
160
120
80
40
0
40
80
5
4
3
2
1
0
VL=4 V
RL=5.1 k
Gain = +2dB
VL=1 V
VL=2 V
VL=3 V
NEGATIVE CLAMP ACCURACY (VL)
Expected Output Voltage V
V
O
V
CLAMP
V
O
V
CLAMP
V
O
V
CLAMP
80
40
0
40
80
120
160
012345
VH=4 V
RL=500
Gain = +2dB
VH=1 V
VH=2 V
VH=3 V
POSITIVE CLAMP ACCURACY (VH)
Expected Output Voltage V
120
80
40
0
40
80
120
012345
VH=4 V
RL=1 k
Gain = +2dB
VH=1 V
VH=2 V
VH=3 V
POSITIVE CLAMP ACCURACY (VH)
Expected Output Voltage V
120
80
40
0
40
80
120
012345
VH=4 V
RL=5.1 k
Gain = +2dB
VH=1 V
VH=2 V
VH=3 V
POSITIVE CLAMP ACCURACY (VH)
Expected Output Voltage V
V
O
V
CLAMP
V
O
V
CLAMP
V
O
V
CLAMP
Figure 59. Clamping Accuracy
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