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 168-8082
製造零件編號TSC1021BIYPT
HK$7.262
個 (在毎卷:4000)
單位
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS庫存編號 920-6317
製造零件編號TSC101AILT
HK$7.817
個 (在毎卷:3000)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 920-6311
製造零件編號TSC101BILT
HK$6.082
個 (在毎卷:3000)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 166-0789
製造零件編號TSC101CILT
HK$11.083
個 (在毎卷:3000)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 860-7505
製造零件編號CS30AL
HK$9.072
/個 (每包:5個)
單位
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS庫存編號 165-6638
製造零件編號TSC1031IPT
HK$15.694
個 (在毎卷:4000)
單位
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 829-1544
製造零件編號TSC1021BIYPT
HK$7.256
/個 (每包:5個)
單位
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS庫存編號 795-8634
製造零件編號TSC1031IPT
HK$18.724
/個 (每包:5個)
單位
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 860-7514
製造零件編號CS30BL
HK$8.40
/個 (每包:5個)
單位
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS庫存編號 426-269
製造零件編號TSC101CILT
HK$12.016
/個 (每包:5個)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 168-8815
製造零件編號CS30AL
HK$5.809
個 (在毎卷:3000)
單位
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS庫存編號 426-190
製造零件編號TSC101AILT
HK$13.424
/個 (每包:5個)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 426-308
製造零件編號TSC101BILT
HK$11.648
/個 (每包:5個)
單位
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS庫存編號 860-7517
製造零件編號CS30CL
HK$10.758
/個 (每包:5個)
單位
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS庫存編號 829-1541
製造零件編號TSC1021AIYPT
HK$5.304
/個 (每包:10個)
單位
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS庫存編號 168-7760
製造零件編號TSC103IPT
HK$17.221
個 (在毎卷:4000)
單位
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 795-9176
製造零件編號TSC102IPT
HK$17.17
/個 (每包:2個)
單位
Single 2.8 → 30 V - 90dB 1 - 700 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 795-9259
製造零件編號TSC103IPT
HK$25.545
/個 (每包:2個)
單位
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 168-7749
製造零件編號TSC102IPT
HK$6.347
個 (在毎卷:4000)
單位
Single 2.8 → 30 V - 90dB 1 - 700 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS庫存編號 165-5719
製造零件編號TSC1021AIYPT
HK$6.618
個 (在毎卷:4000)
單位
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc