参数资料
型号: THS7002CPWP
厂商: TEXAS INSTRUMENTS INC
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封装: GREEN, PLASTIC, HTSSOP-28
文件页数: 17/41页
文件大小: 1203K
代理商: THS7002CPWP
THS7001, THS7002
70MHz PROGRAMMABLEGAIN AMPLIFIERS
SLOS214C OCTOBER 1998 REVISED MARCH 2007
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
driving a capacitive load (continued)
+
_
PREAMP
CLOAD
499
Input
Output
499
20
Figure 61. Driving a Capacitive Load
offset voltage
The output offset voltage, (VOO) is the sum of the input offset voltage (VIO) and both input bias currents (IIB) times
the corresponding gains. The following schematic and formula can be used to calculate the output offset
voltage:
V
OS + "
V
IO "
I
IB
)
R
S
1
)
R
F
R
G
" I
IB
*
R
F
+
VIO
RG
RS
RF
IIB
VOS
IIB+
+
Figure 62. Output Offset Voltage Model
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 THS7001
and THS7002 preamplifier (see Figure 63).
VI
VO
C1
+
RG
RF
R1
f
–3dB +
1
2
pR1C1
V
O
V
I
+
1
)
R
F
R
G
1
) sR1C1
Figure 63. Single-Pole Low-Pass Filter
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