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| 型號： | INA198AIDBVR |
| 英文描述： | CURRENT SHUNT MONITOR |
| 中文描述： | 電流分流監(jiān)測 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 226K |
| 代理商： | INA198AIDBVR |
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SBOS307B MAY 2004 REVISED JUNE 2004
www.ti.com
9
The INA19x uses a new, unique internal circuit topology
that provides common-mode range extending from 16V
to +36V while operating from a single power supply. The
common-mode rejection in a classic instrumentation amp
approach is limited by the requirement for accurate
resistor matching. By converting the induced input
voltage to a current, the INA19x provides common-mode
rejection that is no longer a function of closely matched
resistor values, providing the enhanced performance
necessary for such a wide common-mode range. A
simplified diagram (see Figure 3) shows the basic circuit
function. When the common-mode voltage is positive,
amplifier A2 is active.
The differential input voltage, (V
IN+
) (V
IN
) applied
across R
S
, is converted to a current through a 5k
resistor. This current is converted back to a voltage
through R
L
, and then amplified by the output buffer
amplifier. When the common-mode voltage is negative,
amplifier A1 is active. The differential input voltage, (V
IN+
)
(V
IN
) applied across R
S
, is converted to a current
through a 5k
resistor. This current is sourced from a
precision current mirror whose output is directed into R
L
converting the signal back into a voltage and amplified by
the output buffer amplifier. Patent-pending circuit
architecture ensures smooth device operation, even
during the transition period where both amplifiers A1 and
A2 are active.
INSIDE THE INA19x
R
S
A1
A2
R
L
Load
V
IN+
Negative
and
Positive
CommonMode
Voltage
V
IN+
V
IN
V+
I
S
OUT =
I
S
R
S
R
L
5k
INA193 INA198
5k
5k
Figure 3. INA19x Simplified Circuit Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INA198AIDBVRG4 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Vltg Out Hi-Sd Msmnt Current Shunt Mntr 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 |
| INA198AIDBVT | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Vltg Out Hi-Sd Msmnt Current Shunt Mntr 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 |
| INA198AIDBVT | 制造商:Texas Instruments 功能描述:Current Shunt Monitor IC |
| INA198AIDBVTG4 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 Vltg Out Hi-Sd Msmnt Current Shunt Mntr 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 |
| INA198AMDBVREP(2) | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT SHUNT MONITORSa??16 V to 80 V Common Mode Range |
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