本文介紹了LT6105的主要性能，方框圖以各種典型的應用。
LT6105: High Side Current Sense Amplifier Features Input Range from –0.3V to 44V & 300uV Offset
The LT®6105 is a micropower, precision current sense amplifier with a very wide input common mode range. The LT6105 monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V–). This allows the LT6105 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105 can withstand differential voltages up to ±44V, which makes it ideal for ?onitoring a fuse or MOSFET switch.
Gain is confi gured with external resistors from 1V/V to 100V/V. The input common mode rejection and power supply rejection are in excess of 100dB and the input offset voltage is less than 300μV. A minimum slew rate of 2V/μs
ensures fast response to unexpected current changes.
The LT6105 can operate from an independent power supply of 2.85V to 36V and draws only 150μA. When V+ is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105 is available in a 6-lead DFN and 8-lead MSOP package.
主要特性" title="主要特性">主要特性：
n Very Wide, Over-the-Top®, Input Common Mode Range
- Extends 44V Above V– (Independent of V+)
- Extends –0.3V Below V–
n Wide Power Supply Range: 2.85V to 36V
n Input Offset Voltage: 300μV Maximum
n Gain Accuracy: 1% Max
n Gain Confi gurable with External Resistors
n Operating Current: 150μA
n Slew Rate: 2V/μs
n Sense Input Current When Powered Down: 1nA
n Full-Scale Output Current: 1mA Minimum
n Operating Temperature Range –40°C to 125°C
n Available in 2mm 3mm DFN and 8-Lead MSOP
Packages
應用：
n High Side or Low Side Current Sensing
n Current Monitoring on Positive or Negative Supply Voltages
n Battery Monitoring
n Fuse/MOSFET Monitoring
n Automotive
n Power Management
n Portable Test/Measurement Systems
圖1。LT6105方框圖
圖2。LT6105典型應用電路圖
圖3。最簡化的電磁螺線管" title="電磁螺線管">電磁螺線管驅動器
圖4。和圖" title="和圖">和圖3 相似的電路，但電磁螺線管接地
LT6105: High Side Current Sense Amplifier Features Input Range from –0.3V to 44V & 300uV Offset
The LT®6105 is a micropower, precision current sense amplifier with a very wide input common mode range. The LT6105 monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V–). This allows the LT6105 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105 can withstand differential voltages up to ±44V, which makes it ideal for ?onitoring a fuse or MOSFET switch.
Gain is confi gured with external resistors from 1V/V to 100V/V. The input common mode rejection and power supply rejection are in excess of 100dB and the input offset voltage is less than 300μV. A minimum slew rate of 2V/μs
ensures fast response to unexpected current changes.
The LT6105 can operate from an independent power supply of 2.85V to 36V and draws only 150μA. When V+ is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105 is available in a 6-lead DFN and 8-lead MSOP package.
主要特性" title="主要特性">主要特性：
n Very Wide, Over-the-Top®, Input Common Mode Range
- Extends 44V Above V– (Independent of V+)
- Extends –0.3V Below V–
n Wide Power Supply Range: 2.85V to 36V
n Input Offset Voltage: 300μV Maximum
n Gain Accuracy: 1% Max
n Gain Confi gurable with External Resistors
n Operating Current: 150μA
n Slew Rate: 2V/μs
n Sense Input Current When Powered Down: 1nA
n Full-Scale Output Current: 1mA Minimum
n Operating Temperature Range –40°C to 125°C
n Available in 2mm 3mm DFN and 8-Lead MSOP
Packages
應用：
n High Side or Low Side Current Sensing
n Current Monitoring on Positive or Negative Supply Voltages
n Battery Monitoring
n Fuse/MOSFET Monitoring
n Automotive
n Power Management
n Portable Test/Measurement Systems
圖1。LT6105方框圖
圖2。LT6105典型應用電路圖
圖3。最簡化的電磁螺線管" title="電磁螺線管">電磁螺線管驅動器
圖4。和圖" title="和圖">和圖3 相似的電路，但電磁螺線管接地
本站內容除特別聲明的原創文章之外，轉載內容只為傳遞更多信息，并不代表本網站贊同其觀點。轉載的所有的文章、圖片、音/視頻文件等資料的版權歸版權所有權人所有。本站采用的非本站原創文章及圖片等內容無法一一聯系確認版權者。如涉及作品內容、版權和其它問題，請及時通過電子郵件或電話通知我們，以便迅速采取適當措施，避免給雙方造成不必要的經濟損失。聯系電話：010-82306118；郵箱：aet@chinaaet.com。