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| 型號(hào)： | INA271AIDRG4 |
| 英文描述： | Voltage Output, Unidirectional Measurement Current-Shunt Monitor |
| 中文描述： | 電壓輸出，單向測量電流并聯(lián)監(jiān)視器 |
| 文件頁數(shù)： | 9/17頁 |
| 文件大?。?/td> | 360K |
| 代理商： | INA271AIDRG4 |
www.ti.com
TRANSIENT PROTECTION
The –16V to +80V common-mode range of the
INA270
and
INA271
is
automotive fault conditions ranging from 12V battery
reversal up to +80V transients, since no additional
protective components are needed up to those
levels. In the event that the INA270 and INA271 are
exposed to transients on the inputs in excess of their
ratings,
external
transient
semiconductor
transient
Transzorbs) will be necessary.
OUTPUT VOLTAGE RANGE
The output of the INA270 and INA271 is accurate
within the output voltage swing range set by the
power-supply pin, V+.
a) Single-Pole Filter
b) Second-Order, Sallen-Key Filter
A1
A2
Single-Pole Filter
Capacitor
+2.7V to +18V
5k
W
5k
W
96k
W
R
L
PRE OUT
BUF IN
GND
Output
IN
-
IN+
V+
Load
Supply
R
S
INA270
A1
A2
Second-Order, Sallen-Key Filter Connection
+2.7V to +18V
C
FILT
C
FILT
5k
W
5k
W
96k
W
R
L
PRE OUT
BUF IN
GND
Output
IN
-
IN+
V+
Load
Supply
R
S
R
S
INA270
INA270
INA271
SBOS381A–FEBRUARY 2007–REVISED APRIL 2007
Despite
protection, the INA270 and INA271 are not suited to
using external resistors in series with the inputs since
the internal gain resistors can vary up to
±
30%, but
are tightly matched (if gain accuracy is not important,
then resistors can be added in series with the
INA270 and INA271 inputs with two equal resistors
on each input).
the
use
of
internal
zener-type
ESD
ideal
for
withstanding
absorption
with
or
absorbers
(zeners
Use of MOVs or VDRs is not recommended except
when they are used in addition to a semiconductor
transient absorber. Select the transient absorber
such that it will never allow the INA270 and INA271
to be exposed to transients greater than 80V (that is,
allow for transient absorber tolerance, as well as
additional voltage because of transient absorber
dynamic impedance).
The INA270 and INA271 readily enable the inclusion
of filtering between the preamp output and buffer
input. Single-pole filtering can be accomplished with
a single capacitor because of the 96k
output
impedance at PRE OUT on pin 3, as shown in
Figure 16
a.
The INA270 and INA271 readily lend themselves to
second-order Sallen-Key configurations, as shown in
Figure 16
b. When designing these configurations
consider that the PRE OUT 96k
output impedance
exhibits an initial variation of
±
30% with the addition
of a –2200ppm/
°
C temperature coefficient.
Figure 16. The INA270–INA271 can be easily connected for first- or second-order filtering. Remember to
use the appropriate buffer gain (INA270 = 1.4, INA271 = 2) when designing Sallen-Key configurations.
9
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA271AQDRQ1 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Auto Cat Unidir- Msrmt Crnt-Shunt Mon RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| INA271-HT | 制造商:TI 制造商全稱:Texas Instruments 功能描述:VOLTAGE OUTPUT, UNIDIRECTIONAL MEASUREMENT CURRENT-SHUNT MONITOR |
| INA271SHKJ | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Hi Temp Hi-Side Msmt Crnt-Shunt Mon RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| INA271SHKQ | 功能描述:電流靈敏放大器 Hi Temp Vout Hi-Side Msmt Crnt-Shunt Mon RoHS:否 制造商:Texas Instruments 通道數(shù)量: 共模抑制比（最小值）:110 dB 輸入補(bǔ)償電壓:80 uV 電源電壓-最大:5.5 V 電源電壓-最小:2.7 V 電源電流:350 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| INA271SKGD1 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 VOut Hi-Side Msmt Current-Shunt Mon RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
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