High-side current-sense amplifier demonstration board
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
STEVAL-ISQ007V1
based on the TSC101
Data Brief
Description
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.
STEVAL-ISQ007V1
February 2009 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-ISQ007V1
1 Circuit schematic
Figure 1. Schematic
J2
1
Current_in
R1
1 2
3
4
R2
J3
1
Current_out
J4
Gnd
TSC101
VCC
OUT
IC1
5
C1
CAP
J1
1
1
2
3
CON3
3
VP VM
GND
2
1
4
2/4
STEVAL-ISQ007V1 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
12-Feb-2009 1 Initial release.
3/4
STEVAL-ISQ007V1
y
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