- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362809 > INA271AIDR Voltage Output, Unidirectional Measurement Current-Shunt Monitor PDF資料下載
參數(shù)資料
| 型號： | INA271AIDR |
| 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)： | 10/13頁 |
| 文件大小： | 299K |
| 代理商： | INA271AIDR |
"#$
"#%
SBOS381 FEBRUARY 2007
www.ti.com
10
0.48
0.48
0.40
0.36
0.32
0.28
0.24
0.20
0.16
0.12
0.08
0.04
0
0
2
4
6
8
10
12
14
16
18
20
22
V
O
(
V
SENSE
(mV)
24
INA271 V
OUT
Limit
(1)
V
CM2
V
CM1
V
CM3
V
CM4
V
, V
, and V
illustrate the variance
from part to part of the V
CM
that can cause
maximum V
OUT
with V
SENSE
< 20mV.
V
OUT
limit at V
SENSE
= 0mV,
0
≤
V
CM1
≤
V
S
NOTE: (1) INA271 V
OUT
Limit = 0.4V. INA270 V
OUT
Limit = 0.28V.
Ideal
Figure 4. Example for Low V
Case 2
(INA271, Gain = 20)
SHUTDOWN
The INA270 and INA271 do not provide a shutdown pin;
however, because they consume a quiescent current less
than 1mA, they can be powered by either the output of logic
gates or by transistor switches to supply power. Driving the
gate low shuts down the INA270/INA271. Use a
totem-pole output buffer or gate that can provide sufficient
drive along with 0.1
μ
F bypass capacitor, preferably
ceramic with good high-frequency characteristics. This
gate should have a supply voltage of 3V or greater
because the INA270 and INA271 require a minimum
supply greater than 2.7V. In addition to eliminating
quiescent current, this gate also turns off the 10
μ
A bias
current present at each of the inputs. Note that the IN+ and
IN inputs are able to withstand full common-mode voltage
under all powered and under-powered conditions. An
example shutdown circuit is shown in Figure 5.
RFI/EMI
Attention
recommended. Keep traces short and, when possible, use
a printed circuit board (PCB) ground plane with
surface-mount components placed as close to the device
pins as possible. Small ceramic capacitors placed directly
across amplifier inputs can reduce RFI/EMI sensitivity.
PCB layout should locate the amplifier as far away as
possible from RFI sources. Sources can include other
components in the same system as the amplifier itself,
such as inductors (particularly switched inductors
handling a lot of current and at high frequencies). RFI can
generally be identified as a variation in offset voltage or dc
signal levels with changes in the interfering RF signal. If
the amplifier cannot be located away from sources of
radiation, shielding may be needed. Twisting wire input
leads makes them more resistant to RF fields. The
difference in input pin location of the INA270 and INA271
versus the INA193INA198 may provide different EMI
performance.
to
good
layout
practices
is
always
R
S
0.1
μ
F
V+ > 3V
Load
16V to +80V
Supply
Negative
and
Positive
CommonMode
Voltage
I
L
A1
A2
SinglePole Filter
Capacitor
5k
5k
96k
R
L
PRE OUT
BUF IN
GND
OUT
IN
IN+
V+
INA270, INA271
74HC04
Figure 5. INA270INA271 Example Shutdown Circuit
相關PDF資料 |
PDF描述 |
|---|---|
| IS-5 | One Channel/ ISD-5 Two Channel/ ISQ-5 Four Channel Optically Coupled Isolat |
| IS25C64-3G | EEPROM |
| IS42S16100-10T | x16 SDRAM |
| IS42S16100-6T | x16 SDRAM |
| IS42S16100-7T | x16 SDRAM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| INA271AIDRG4 | 功能描述:電流和電力監(jiān)控器、調節(jié)器 Vltg Output Hi-Side Msrmt Crnt-Shunt Mon RoHS:否 制造商:STMicroelectronics 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| INA271AQDRQ1 | 功能描述:電流和電力監(jiān)控器、調節(jié)器 Auto Cat Unidir- Msrmt Crnt-Shunt Mon RoHS:否 制造商:STMicroelectronics 產品: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、調節(jié)器 Hi Temp Hi-Side Msmt Crnt-Shunt Mon RoHS:否 制造商:STMicroelectronics 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。