- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄5270 > LTC6103IMS8#TRPBF (Linear Technology)IC AMP CURRENT SENSE 8-MSOP PDF資料下載
參數(shù)資料
| 型號： | LTC6103IMS8#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP CURRENT SENSE 8-MSOP |
| 標準包裝： | 2,500 |
| 放大器類型： | 電流檢測 |
| 電路數(shù)： | 2 |
| 增益帶寬積： | 140kHz |
| 電流 - 輸入偏壓： | 100nA |
| 電壓 - 輸入偏移： | 85µV |
| 電流 - 電源： | 390µA |
| 電流 - 輸出 / 通道： | 1mA |
| 電壓 - 電源，單路/雙路(±)： | 4 V ~ 60 V，±2 V ~ 30 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-MSOP |
| 包裝： | 帶卷 (TR) |
LTC6103
7
6103f
APPLICATIONS INFORMATION
In this dual current sense device, ampliers A and B are
independent except for sharing the same V– pin. So supply
voltage and component values can be chosen independently
for each amplier.
Selection of External Current Sense Resistor
The external sense resistor, RSENSE, has a signicant effect
on the function of a current sensing system and must be
chosen with care.
First, the power dissipation in the resistor should be
considered. The system load current will cause both heat
and voltage loss in RSENSE. As a result, the sense resis-
tor should be as small as possible while still providing
the input dynamic range required by the measurement.
Note that input dynamic range is the difference between
the maximum input signal and the minimum accurately
reproduced signal, and is limited primarily by input DC
offset of the internal amplier of the LTC6103.
As an example, an application may require that the
maximum sense voltage be 100mV. If this application is
expected to draw 2A at peak load, RSENSE should be no
larger than 50m
Ω.
R
V
I
mV
A
m
SENSE
PEAK
==
=
100
2
50
Once the maximum RSENSE value is determined, the mini-
mum sense resistor value will be set by the resolution or
dynamic range required. The minimum signal that can be
accurately represented by this sense amp is limited by the
input offset. As an example, the LTC6103 has a typical
input offset of 85V. If the minimum current is 20mA, a
sense resistor of 4.25m
Ω will set VSENSE to 85V. This is
the same value as the input offset. A larger sense resistor
will reduce the error due to offset by increasing the sense
voltage for a given load current.
Choosing a 50m
ΩRSENSEwillmaximizethedynamicrange
and provide a system that has 100mV across the sense
resistor at peak load (2A), while input offset causes an
error equivalent to only 1.7mA of load current.
Peak dissipation is 200mW. If instead a 5m
Ω sense resis-
tor is employed, then the effective current error is 17mA,
while the peak sense voltage is reduced to 10mV at 2A,
dissipating only 20mW.
The low offset and corresponding large dynamic range of
the LTC6103 make it more exible than other solutions
in this respect. The 85V typical offset gives 60dB of
dynamic range for a sense voltage that is limited to 85mV
max, and over 75dB of dynamic range for a maximum
input of 500mV.
THEORY OF OPERATION
An internal sense amplier loop forces –IN to have the
same potential as +IN. Connecting an external resistor, RIN,
between –IN and V+ forces a potential across RIN that is the
same as the sense voltage across RSENSE. A corresponding
current, (ILOAD + IS) RSENSE/RIN, will ow through RIN.
The high impedance inputs of the sense amplier will not
conduct this input current, so the current will ow through
an internal MOSFET to the OUT pin. In most application
cases, IS << ILOAD, so IOUT ≈ ILOAD RSENSE/RIN.
The output current can be transformed into a voltage by
adding a resistor from OUT to V–. The output voltage is
then VOUT = (V
–) + (IOUT ROUT).
相關PDF資料 |
PDF描述 |
|---|---|
| TA45-ABDWF090C0 | CIRCUIT BRKR THERMAL 9A 2POLE |
| 0031.8559 | FUSE 400MA 250VAC 5X20 FAST |
| V56CH8 | VARISTR 56V 100A 1.4J SMD CH T/R |
| TA45-A124PJ25C0 | CIRCUIT BRKR THERMAL 2.5A 2POLE |
| EL5308IS | IC AMP FGA TRPL 450MHZ 16-SOIC |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC6104 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:36V Low Cost High Side Current Sense in a SOT-23 |
| LTC6104CMS8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, High Side, Bi-Directional Current Sense Amplifi er |
| LTC6104CMS8#PBF | 功能描述:IC AMP CURRENT SENSE 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 其它有關文件:Automotive Product Guide 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
| LTC6104CMS8#TRPBF | 功能描述:IC AMP CURRENT SENSE 8-MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:1,000 系列:- 放大器類型:電壓反饋 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SOIC 包裝:帶卷 (TR) |
| LTC6104CMS8PBF | 制造商:Linear Technology 功能描述:Bi-Directional Curr Sense Amp LTC6104 |
發(fā)布緊急采購，3分鐘左右您將得到回復。