Current Sensing Amplifiers

Current sensing amplifiers measure current by outputting a voltage that is proportional to the flowing power current. A resistor is used to convert the load current to a small voltage which is then accurately amplified. They offer real-time overcurrent protection.


What are the different applications of current sensing amplifiers?


Accurate current sensing is crucial to optimising performance in a range of applications, such as motor control and power management. In devices where battery or power-line monitoring is highly necessary, like laptops and phones, current sensing amplifiers are critical. 


How to choose the right type of current sensing amplifier


There are several factors that will determine the the type of amplifier you choose, including whether the measurement will be on the high or low side. The sense resistor can be placed either between the supply voltage and load, or between the load and ground. The former is called high-side seinsing, whereas the latter is called low-side sensing. High voltage current sensing amplifiers offer input ranges up to +76V and down to -20V, ideal for applications such as motor control and network routers. Low power current sensing amplifiers help to maximise and extend battery life. 


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제품설명 단가 Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Minimum CMRR Number of Channels per Chip Output Type Maximum Supply Current Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage
RS 제품 번호 894-7027
제조사 부품 번호TS1106-200ITD833
제조사Silicon Labs
₩1,949.90
Each (In a Pack of 5)
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Single 1.7 → 5.25 V - 120dB 2 Buffered 1.3 μA Surface Mount TDFN 8 3 x 3 x 0.75mm 0.75mm 3mm 6 V
RS 제품 번호 901-3967
제조사 부품 번호Si8920AC-IP
제조사Silicon Labs
₩4,423.70
Each (In a Pack of 2)
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Single 3 → 5.5 V - - 2 Differential 5.5 mA Through Hole DIP 8 9.9 x 6.6 x 3.44mm 3.44mm 9.9mm 5.5 V
RS 제품 번호 901-3976
제조사 부품 번호Si8920BC-IP
제조사Silicon Labs
₩4,002.10
Each (In a Pack of 2)
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Single 3 → 5.5 V - - 2 Differential 5.5 mA Through Hole DIP 8 9.9 x 6.6 x 3.44mm 3.44mm 9.9mm 5.5 V
RS 제품 번호 169-0204
제조사 부품 번호SI8920BC-IP
제조사Silicon Labs
₩3,552.60
Each (In a Tube of 50)
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Single 3 → 5.5 V - - 2 Differential 5.5 mA Through Hole DIP 8 9.9 x 6.6 x 3.44mm 3.44mm 9.9mm 5.5 V
RS 제품 번호 169-0202
제조사 부품 번호SI8920AC-IP
제조사Silicon Labs
₩4,257.85
Each (In a Tube of 50)
수량
Single 3 → 5.5 V - - 2 Differential 5.5 mA Through Hole DIP 8 9.9 x 6.6 x 3.44mm 3.44mm 9.9mm 5.5 V