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參數(shù)資料
| 型號(hào)： | THS4051JG |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 70-MHz HIGH-SPEED AMPLIFIERS |
| 中文描述： | 70 - MHz的高速放大器 |
| 文件頁數(shù)： | 17/30頁 |
| 文件大?。?/td> | 487K |
| 代理商： | THS4051JG |
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THS4051, THS4052
70-MHz HIGH-SPEED AMPLIFIERS
SLOS238C– MAY 1999 – REVISED MAY 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving a capacitive load
Driving capacitive loads with high performance amplifiers is not a problem as long as certain precautions are
taken. The first is to realize that the THS405x has been internally compensated to maximize its bandwidth and
slew rate performance. When the amplifier is compensated in this manner, capacitive loading directly on the
output will decrease the device’s phase margin leading to high frequency ringing or oscillations. Therefore, for
capacitive loads of greater than 10 pF, it is recommended that a resistor be placed in series with the output of
the amplifier, as shown in Figure 45. A minimum value of 20
should work well for most applications. For
example, in 75-
transmission systems, setting the series resistor value to 75
both isolates any capacitance
loading and provides the proper line impedance matching at the source end.
+
_
THS405x
CLOAD
1 k
Input
Output
1 k
20
Figure 45. Driving a Capacitive Load
offset nulling
The THS405x has very low input offset voltage for a high-speed amplifier. However, if additional correction is
required, an offset nulling function has been provided on the THS4051. The input offset can be adjusted by
placing a potentiometer between terminals 1 and 8 of the device and tying the wiper to the negative supply. This
is shown in Figure 46.
_
+
THS4051
VCC–
VCC+
0.1
μ
F
0.1
μ
F
10 k
Figure 46. Offset Nulling Schematic
相關(guān)PDF資料 |
PDF描述 |
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| THS4052D | 70-MHz HIGH-SPEED AMPLIFIERS |
| THS4052DGN | 70-MHz HIGH-SPEED AMPLIFIERS |
| THS4052EVM | 70-MHz HIGH-SPEED AMPLIFIERS |
| THS4051DGN | 70-MHz HIGH-SPEED AMPLIFIERS |
| THS4051EVM | 70-MHz HIGH-SPEED AMPLIFIERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS4051MFK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:70-MHz HIGH-SPEED AMPLIFIERS |
| THS4051MFKB | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±16.5V/33V 20-Pin LCCC Tube |
| THS4051MJG | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±16.5V/33V 8-Pin CDIP Tube 制造商:Texas Instruments 功能描述:HIGH SPEED, SINGLE OP AMP |
| THS4051MJGB | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±16.5V/33V 8-Pin CDIP Tube |
| THS4052 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:70-MHz HIGH-SPEED AMPLIFIERS |
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