最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

LT1167I Datasheet

  • LT1167I

  • Linear Technology [Single Resistor Gain Programmable, Preci...

  • LINER

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

LT1167
APPLICATIONS INFORMATION
To significantly reduce the effect of these out-of-band
signals on the input offset voltage of instrumentation
amplifiers, simple lowpass filters can be used at the
inputs. This filter should be located very close to the input
pins of the circuit. An effective filter configuration is
illustrated in Figure 5, where three capacitors have been
added to the inputs of the LT1167. Capacitors C
XCM1
and
C
XCM2
form lowpass filters with the external series resis-
tors R
S1, 2
to any out-of-band signal appearing on each of
the input traces. Capacitor C
XD
forms a filter to reduce any
unwanted signal that would appear across the input traces.
An added benefit to using C
XD
is that the circuit鈥檚 AC
common mode rejection is not degraded due to common
mode capacitive imbalance. The differential mode and
common mode time constants associated with the capaci-
tors are:
t
DM(LPF)
= (2)(R
S
)(C
XD
)
t
CM(LPF)
= (R
S1, 2
)(C
XCM1, 2
)
Setting the time constants requires a knowledge of the
frequency, or frequencies of the interference. Once this
frequency is known, the common mode time constants
can be set followed by the differential mode time constant.
To avoid any possibility of inadvertently affecting the
signal to be processed, set the common mode time
constant an order of magnitude (or more) larger than the
differential mode time constant. To avoid any possibility of
common mode to differential mode signal conversion,
match the common mode time constants to 1% or better.
If the sensor is an RTD or a resistive strain gauge, then the
series resistors R
S1, 2
can be omitted, if the sensor is in
proximity to the instrumentation amplifier.
鈥淩oll Your Own鈥濃€擠iscrete vs Monolithic LT1167
Error Budget Analysis
The LT1167 offers performance superior to that of 鈥渞oll
your own鈥?three op amp discrete designs. A typical appli-
cation that amplifies and buffers a bridge transducer鈥檚
differential output is shown in Figure 6. The amplifier, with
its gain set to 100, amplifies a differential, full-scale output
voltage of 20mV over the industrial range. To make the
comparison challenging, the low cost version of the LT1167
will be compared to a discrete instrumentation amp made
with the A grade of one of the best precision quad op amps,
the LT1114A. The LT1167C outperforms the discrete
amplifier that has lower V
OS
, lower I
B
and comparable V
OS
drift. The error budget comparison in Table 1 shows how
various errors are calculated and how each error affects
the total error budget. The table shows the greatest
differences between the discrete solution and the LT1167
are input offset voltage and CMRR. Note that for the
discrete solution, the noise voltage specification is multi-
plied by
鈭?
which is the RMS sum of the uncorelated noise
of the two input amplifiers. Each of the amplifier errors is
referenced to a full-scale bridge differential voltage of
20mV. The common mode range of the bridge is 5V. The
LT1114 data sheet provides offset voltage, offset voltage
drift and offset current specifications for the matched op
amp pairs used in the error-budget table. Even with an
excellent matching op amp like the LT1114, the discrete
solution鈥檚 total error is significantly higher than the
LT1167鈥檚 total error. The LT1167 has additional advan-
tages over the discrete design, including lower compo-
nent cost and smaller size.
C
XD
10pF
R
S2
1.6k
C
XCM2
100pF
EXTERNAL RFI
FILTER
R
G
Figure 5. Adding a Simple RC Filter at the Inputs to an
Instrumentation Amplifier is Effective in Reducing Rectification
of High Frequency Out-of-Band Signals
14
鈥?/div>
IN
鈥?/div>
+
IN
+
R
S1
C
XCM1
1.6k 100pF
V
+
LT1167
V
鈥?/div>
1167 F05
U
W
U
U
V
OUT

LT1167I相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    Seoul Semiconductor [RED OVAL LAMP LED]
    SEOUL
  • 英文版
    Linear Technology [High Speed Operational Amplifier]
    LINER
  • 英文版
    Linear Technology [Precision, Chopper-Stabilized Instrument...
    LINER
  • 英文版
    Precision, Micropower, Single Supply Instrumentation Amplifi...
    LINER
  • 英文版
    Precision, Micropower, Single Supply Instrumentation Amplifi...
    Linear
  • 英文版
    Precision, Micropower, Single Supply Instrumentation Amplifi...
    Linear
  • 英文版
    Precision, Micropower, Single Supply Instrumentation Amplifi...
    Linear
  • 英文版
    High Speed, Precision, JFET Input Instrumentation Amplifier(...
    LINER
  • 英文版
    High Speed, Precision JFET Input Instrumentation Amplifier (...
    Linear
  • 英文版
    High Speed, Precision, JFET Input Instrumentation Amplifier ...
    Linear
  • 英文版
    High Speed, Precision, JFET Input Instrumentation Amplifier&...
    Linear
  • 英文版
    Offline Switching Regulator
    LINER
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Offline Switching Regulator
    LINER
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Offline Switching Regulator
    Linear
  • 英文版
    Micropower Step-Up DC/DC Converter for PCMCIA Card Flash Mem...
    LINER

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！