參數(shù)資料
型號(hào): THS4052DGN
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): 19/30頁
文件大?。?/td> 487K
代理商: THS4052DGN
THS4051, THS4052
70-MHz HIGH-SPEED AMPLIFIERS
SLOS238C– MAY 1999 – REVISED MAY 2000
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
general configurations
When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often
required. The simplest way to accomplish this is to place an RC filter at the noninverting terminal of the amplifier
(see Figure 49).
VI
VO
C1
+
RG
RF
R1
f–3dB
1
2 R1C1
VO
VI
1
RF
RG
1
1
sR1C1
Figure 49. Single-Pole Low-Pass Filter
If even more attenuation is needed, a multiple pole filter is required. The Sallen-Key filter can be used for this
task. For best results, the amplifier should have a bandwidth that is 8 to 10 times the filter frequency bandwidth.
Failure to do this can result in phase shift of the amplifier.
VI
C2
R2
R1
C1
RF
RG
R1 = R2 = R
C1 = C2 = C
Q = Peaking Factor
(Butterworth Q = 0.707)
(
=
1
Q
2 –
)
RG
RF
_
+
f–3dB
1
2 RC
Figure 50. 2-Pole Low-Pass Sallen-Key Filter
相關(guān)PDF資料
PDF描述
THS4052EVM 70-MHz HIGH-SPEED AMPLIFIERS
THS4051DGN 70-MHz HIGH-SPEED AMPLIFIERS
THS4051EVM 70-MHz HIGH-SPEED AMPLIFIERS
THS4051FK 70-MHz HIGH-SPEED AMPLIFIERS
THS4051MFK 70-MHz HIGH-SPEED AMPLIFIERS
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