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TSC2010H Datasheet(PDF) 25 Page - STMicroelectronics

No. de pieza TSC2010H
Descripción Electrónicos  High temperature, high voltage, precision, bidirectional current sense amplifiers
PDF  50 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TSC2010H Datasheet(HTML) 25 Page - STMicroelectronics

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So due to the architecture of the TSC2011H, the current to be measured must be much larger than the input bias
current. In case of small current to measure the Iib current must be taken into account.
Figure 55. Input bias current vs. common mode voltage Vcc = 5 V
-20
-10
0
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40
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-600
-500
-400
-300
-200
-100
0
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Iibp
Vref=Vcc/2
Vsense=0V
Vcc=5V
Iibn
Vicm (V)
•
Gnd < Vicm < Vcc
In this manner, the TSC2011H is only powered by the power supply Vcc, and the iib currents are very close to 0
µA and do not have any impact on the current measurement.
•
-20 V < Vicm < Gnd
The TSC2011H is fully functional in this range of common mode voltage and has also been characterized.
As the high positive common mode voltage, in this specific range, the TSC2011H is also powered by the input,
see Figure 3.
Figure 56. Power supply when Vicm < Gnd
TSC2010H, TSC2011H, TSC2012H
Theory of operation
DS13791 - Rev 1
page 25/50



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