ST ISQ007V1 User Manual
STEVAL-ISQ007V1
High-side current-sense amplifier demonstration board based on the TSC101
Features
■Independent supply and input common-mode voltages
■Wide common-mode operating range: 2.8 V to 30 V
■Wide common-mode surviving range: -0.3 V to 60 V (load-dump)
■Wide supply voltage range: 4 V to 24 V
■Low current consumption: ICC max is 300 µA
■Internally fixed gain:
–20 V/V (TSC101A)
–50 V/V (TSC101B)
–100 V/V (TSC101C)
■Buffered output
Description
Data Brief
STEVAL-ISQ007V1
This demonstration board is specifically designed for the TSC101 integrated circuit.
The TSC101 measures a very small voltage drop on a high-side shunt resistor, and, using an internally fixed gain, amplifies the difference into a ground-referenced output voltage; the amplification gain is internally fixed.
Input common-mode and power supply voltages are independent.
The common-mode voltage can range from 2.8 V to 30 V in operating conditions, and up to 60 V in absolute maximum ratings.
The supply voltage can range from 4 V to 24 V.
Current consumption of less than 300 µA over the temperature range and low input bias current (less than 8 µA in standard conditions, a few 100 nA if VCC isn't supplied) are particularly interesting to save power in the application.
February 2009 |
Rev 1 |
1/4 |
For further information contact your local STMicroelectronics sales office. |
www.st.com |
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Circuit schematic |
STEVAL-ISQ007V1 |
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1 Circuit schematic
Figure 1. |
Schematic |
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J2 |
R1 |
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J3 |
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Current_in |
3 |
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Current_out |
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R2 |
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3 |
4 |
IC1 |
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VP |
VM |
TSC101 |
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VCC |
5 |
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C1 |
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CAP |
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J1 |
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OUT |
1 |
1 |
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2 |
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3 |
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CON3 |
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GND |
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J4 |
2 |
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1 |
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Gnd |
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