参数资料
型号: TLC083AIDRG4
厂商: Texas Instruments, Inc.
英文描述: FAMILY OF WIDE BANDWIDTH HIGH OUTPUT DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS
中文描述: 家庭宽带高输出驱动单电源运算放大器
文件页数: 18/52页
文件大小: 1462K
代理商: TLC083AIDRG4
SLOS254D JUNE 1999 REVISED FEBRUARY 2004
18
WWW.TI.COM
APPLICATION INFORMATION
driving a capacitive load
When the amplifier is configured 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 (R
NULL
) with the output of the amplifier, as
shown in Figure 47. A minimum value of 20
should work well for most applications.
CLOAD
RF
Input
Output
RG
RNULL
_
+
Figure 47. Driving a Capacitive Load
offset voltage
The output offset voltage, (V
OO
) is the sum of the input offset voltage (V
IO
) and both input bias currents (I
IB
) times
the corresponding gains. The following schematic and formula can be used to calculate the output offset
voltage:
VOO
VIO
1
RF
RG
IIB
RS
1
RF
RG
IIB–RF
+
VI
+
RG
RS
RF
IIB
VO
IIB+
Figure 48. Output Offset Voltage Model
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TLC085AIPWPR FAMILY OF WIDE BANDWIDTH HIGH OUTPUT DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS
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