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| 型號： | TLC27X |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FAMILY OF 500-UA/CH 3-MHZ RAIL-TO-RAIL OUTPUT OPERATIONAL AMPLIFIERS |
| 中文描述： | 3系列的500-UA/CH MHz的軌到軌輸出運算放大器 |
| 文件頁數(shù)： | 12/22頁 |
| 文件大?。?/td> | 514K |
| 代理商： | TLC27X |
μ
SGLS275 OCTOBER 2004
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 23
0.00
0.05
0.10
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
t Time
μ
s
0.00
0.05
0.10
INVERTING SMALL-SIGNAL RESPONSE
VDD = 5 V
AV = VI = 1
RL = 2 k
CL = 10 pF
VI = 100 mVpp
TA = 25
°
C
VO
VO
VI
VI
Figure 24
140
120
100
80
60
40
20
0
10
100
1 k
10 k
100 k
CROSSTALK
vs
FREQUENCY
f Frequency Hz
VDD = 2.7, 5, & 15 V
VI = 1 VDD/2
AV = 1
RL = 2 k
TA = 25
°
C
C
Crosstalk
APPLICATION INFORMATION
driving a capacitive load
When the amplifier is configured in this manner, capacitive loading directly on the output decreases 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 (R
NULL
) with the output of the amplifier, as shown
in Figure 25. A minimum value of 20
should work well for most applications.
CLOAD
RF
Input
Output
RG
RNULL
+
VDD/2
Figure 25. Driving a Capacitive Load
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