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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Description Price 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庫存編號 922-8238
製造零件編號ZXCT1107SA-7
HK$2.983
個 (在毎卷:3000)
單位
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RS庫存編號 738-5272
製造零件編號ZXCT1107SA-7
HK$4.506
/個 (每包:5個)
單位
- - - - - - - - - - - - - -
RS庫存編號 154-920
製造零件編號ZXCT1009FTA
HK$7.336
/個 (每包:5個)
單位
- 2.5 → 20 V - - - - - Surface Mount SOT-23 3 3.05 x 1.4 x 1mm 1mm 3.05mm -
RS庫存編號 922-7617
製造零件編號ZXCT1009FTA
HK$3.437
個 (在毎卷:3000)
單位
- 2.5 → 20 V - - - - - Surface Mount SOT-23 3 3.05 x 1.4 x 1mm 1mm 3.05mm -
RS庫存編號 922-8232
製造零件編號ZXCT1109SA-7
HK$2.983
個 (在毎卷:3000)
單位
- - - - - - - - - - - - - -
RS庫存編號 738-5276
製造零件編號ZXCT1109SA-7
HK$6.786
/個 (每包:5個)
單位
- - - - - - - - - - - - - -
RS庫存編號 879-3375
製造零件編號IR25750LTRPBF
BrandInfineon
HK$4.05
/個 (每包:10個)
單位
Single -5 → 600 V - - 1 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 600 V
RS庫存編號 162-6300
製造零件編號LMP8601MA/NOPB
HK$18.923
毎管:95 個
單位
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V
RS庫存編號 165-5536
製造零件編號IR25750LTRPBF
BrandInfineon
HK$3.482
個 (在毎卷:3000)
單位
Single -5 → 600 V - - 1 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 600 V
RS庫存編號 761-6328
製造零件編號LMP8601MA/NOPB
HK$25.45
單位
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V
RS庫存編號 825-3081
製造零件編號INA213AIDCKR
HK$11.882
/個 (每包:5個)
單位
Single 5 V - 105dB 1 Analogue 5 mA Surface Mount SC-70 6 2.15 x 1.4 x 1mm 1mm 2.15mm 26 V
RS庫存編號 919-9881
製造零件編號LT6106HS5#TRMPBF
HK$12.664
個 (在毎卷:500)
單位
Single 2.7 → 36 V - - 1 - 115 μA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 36 V
RS庫存編號 786-9727
製造零件編號LT6106HS5#TRMPBF
HK$14.616
/個 (每包:5個)
單位
Single 2.7 → 36 V - - 1 - 115 μA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 36 V
RS庫存編號 817-6603
製造零件編號INA282AID
HK$28.338
/個 (每包:5個)
單位
Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS庫存編號 921-2940
製造零件編號INA282AID
HK$21.902
毎管:75 個
單位
Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS庫存編號 461-6586
製造零件編號INA169NA/250
HK$19.81
單位
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 60 V
RS庫存編號 378-2755
製造零件編號INA138NA/250
HK$15.77
單位
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 36 V
RS庫存編號 100-3851
製造零件編號INA169NA/250
HK$11.419
個 (在毎卷:250)
單位
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 60 V
RS庫存編號 100-3828
製造零件編號INA138NA/250
HK$10.443
個 (在毎卷:250)
單位
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 36 V
RS庫存編號 738-5285
製造零件編號ZXCT1110W5-7
HK$6.868
/個 (每包:5個)
單位
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