參數(shù)資料
型號: TLC075IPWPRG4
廠商: Texas Instruments, Inc.
英文描述: FAMILY OF WIDE-BANDWIDTH HIGH-OUTPUT-DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS
中文描述: 家庭具有寬帶高輸出驅(qū)動單電源運算放大器
文件頁數(shù): 18/48頁
文件大?。?/td> 1839K
代理商: TLC075IPWPRG4
SLOS219E JUNE 1999 REVISED SEPTEMBER 2006
18
WWW.TI.COM
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
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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