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TSH110ILT 数据表(PDF) 15 Page - STMicroelectronics

部件名 TSH110ILT
功能描述  WIDE BAND, LOW NOISE OPERATIONAL AMPLIFIERS
PDF  19 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TSH110ILT 数据表(HTML) 15 Page - STMicroelectronics

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TSH110-TSH111-TSH112-TSH113-TSH114
15/19
The amplifier must be biased with a mid supply
(nominaly +Vcc/2), in order to maintain the DC
component of the signal at this value. Several op-
tions are possible to provide this bias supply (such
as a virtual ground using an operational amplifier),
or a two-resistance divider which is the cheapest
solution. A high resistance value is required to lim-
it the current consumption. On the other hand, the
current must be high enough to bias the non-in-
verting input of the amplifier. If we consider this
bias current (5
µA) as the 1% of the current
through the resistance divider (500
µA) to keep a
stable mid supply, two 5k
Ω resistances can be
used.
The input provides a high pass filter with a break
frequency below 10Hz which is necessary to re-
move the original 0 volt DC component of the input
signal, and to hold it at 2.5V.
Video Multiplexing using the TSH113
(fig.35): Circuit for switching 3 video signals with the tri-
ple TSH113.
Assuming a low level active onto the disable pins
(1,2,3) as described on page 7 of the datasheet,
any operator can be disable/enable independent-
ly. The two disabled operators will be in standby
mode featuring a high ouput impedance with a
high input/output isolation and a low quiescent
current.
(fig.36): Typical output response in standby mode on/off
(fig.37): Typical output response in standby mode off/on
+
_
RG
680
Ω
IN1
Rfb, 680
Ω
Cfb, 2pF
TSH113
+
_
RG
680
Ω
IN2
75
Ω
Common
OUT
75
Ω
Rfb, 680
Ω
Cfb, 2pF
TSH113
+
_
RG
680
Ω
IN3
Rfb, 680
Ω
Cfb, 2pF
TSH113
75
Ω
cable
ENABLE1
ENABLE2
ENABLE3
+
_
RG
680
Ω
IN1
Rfb, 680
Ω
Cfb, 2pF
TSH113
+
_
RG
680
Ω
IN2
75
Ω
Common
OUT
75
Ω
Rfb, 680
Ω
Cfb, 2pF
TSH113
+
_
RG
680
Ω
IN3
Rfb, 680
Ω
Cfb, 2pF
TSH113
75
Ω
cable
ENABLE1
ENABLE2
ENABLE3
100ns /div.
Disabled
Output
Standby
Signal
+2.4V
-2.4V
Enabled
Output
100ns /div.
Disabled
Output
Standby
Signal
+2.4V
-2.4V
Enabled
Output
10µs /div.
Standby
Signal
+2.4V
-2.4V
Disabled
Output
Enabled
Output
10µs /div.
Standby
Signal
+2.4V
-2.4V
Disabled
Output
Enabled
Output



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