MAX4080EVKIT+ Maxim Integrated Products, MAX4080EVKIT+ Datasheet - Page 3

• Manufacturer Part Number: MAX4080EVKIT+
• Description: KIT EVAL FOR MAX4080
• Manufacturer: Maxim Integrated Products

Specifications of MAX4080EVKIT+

• Main Purpose: Power Management, Current Monitor: High Side
• Utilized Ic / Part: MAX4080
• Silicon Manufacturer: Maxim
• Silicon Core Number: MAX4080, MAX4081
• Kit Application Type: Amplifier
• Application Sub Type: Current-Sense Amplifier
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX4080 EV kit, which is assembled with the
MAX4080SAUA, is designed with a full-scale sense
voltage drop of 100mV. For a typical 1A full-scale load
current, this results in the use of a 0.1Ω sense resistor
on the MAX4080 EV kit using the following equation:
For different full-scale sense voltage and full-scale load-
current arrangements, the equation above can be used
to determine the appropriate current-sense-resistor val-
ues. Refer to Table 1. Typical Component Values in the
MAX4080/MAX4081 IC data sheet for further guidance.
The MAX4080 EV kit can be used to evaluate other gain
versions of the MAX4080 (5V/V, 20V/V, 60V/V = F, T, S
suffix). Replace U1 with a different version of the
MAX4080 and refer to Table 1. Typical Component
Values in the MAX4080/MAX4081 IC data sheet for
additional information.
The MAX4080 EV kit can also be used to evaluate the
MAX4081 bidirectional current-sense amplifiers.
Replace U1 with a MAX4081SAUA, MAX4081TAUA, or
MAX4081FAUA. The MAX4081 requires an external ref-
erence to set the zero-current output level (V
0V). The charging current is represented by an output
voltage from V
given from V
to V
REF
Evaluating the MAX4081 Bidirectional
(instead of GND) gives a ± output voltage.
REF
R
REF
1=
MAX4080FAUA/MAX4080TAUA
to GND. Measuring V
_______________________________________________________________________________________
V
I
to V
SENSE FULL SCALE
LOAD FULL SCALE
Current-Sense Amplifiers
CC
_
_
, while discharge current is
_
_
Evaluating the
OUT
with respect
SENSE
=
MAX4080 Evaluation Kit
The V
REF1B. V
VREF1A and VREF1B. Connect REF1A and REF1B
together to a low-noise, regulated voltage source to set
the output reference level. In this mode, V
VREF1A when V
Alternatively, connect REF1B to ground and REF1A to a
low-noise, regulated voltage source. In this case, the
output reference level (V
ed by two. V
equals zero.
In either mode, the output swings above the reference
voltage for positive current sensing (VRS+ > VRS-). The
output swings below the reference voltage for negative
current sensing (VRS+ < VRS-).
Use jumpers JU1 and JU2 to set the V
See Table 1 for jumper settings and the corresponding
V
Table 1. JU1 and JU2 Jumper Settings
*Default position.
REF
values.
JU1
OUT
1-2
1-2
2-3
2-3
SHUNT POSITION
REF
reference level is controlled by REF1A and
OUT
is defined as the average voltage of
SENSE
equals half of VREF1A when V
JU2
1-2
2-3
1-2
2-3
equals zero.
REF
) is equal to VREF1A divid-
(V
CC
REF
REFIN/2
REFIN*
V
+ REFIN)/2
V
CC
REF
on the EV kit.
/2
OUT
equals
SENSE
3