MAX11200EVKIT+ Maxim Integrated Products, MAX11200EVKIT+ Datasheet - Page 7

• Manufacturer Part Number: MAX11200EVKIT+
• Description: Power Management Modules & Development Tools MAX11200 EVAL KIT MAX11200 EVAL KIT
• Manufacturer: Maxim Integrated Products
• Type: A/Dr

Specifications of MAX11200EVKIT+

• Interface Type: USB, SPI
• Product: Data Conversion Development Tools
• Resolution: 24 bit
• For Use With/related Products: MAX11200
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The user MUST perform at least one calibration (either
self-calibration and/or system calibration) before any
measurement. Refer to the MAX11200/MAX11210,
MAX11203/MAX11213,
MAX11209/MAX11211 IC data sheets for calibration
details. The following calibration procedure details how
to use all the calibration registers in a measurement.
1)
2)
a.
b.
c.
d.
a.
b.
c.
d.
To perform a self-calibration (both offset and gain):
To perform a system calibration, a system offset
calibration must be performed first:
MAX11200/MAX11206/MAX11209/MAX11210/
This is a conversion with internally shorted
inputs, which is done by the internal state
machine. No user manual action is required.
That is, JU9 and JU8 shunt positions can be
anywhere.
In the CAL1, CAL0 group box, select the
01 – Self Calibration radio button.
In
0 – Calibration/Conversion radio button.
Press the Send button. The device performs a
self-calibration.
This is a conversion with the inputs held at
system zero. For the EV kit, one option is to
place the shunt on JU9 across pins 7-8 (AINP =
GND) and place the shunt on JU8 across pins
7-8 (AINN = GND). In the case of a user system,
the user should apply the target system zero to
the AINN and AINP inputs.
In the CAL1, CAL0 group box, select the
10 – System Offset Calibration radio button.
In
0 – Calibration/Conversion radio button.
In the CTRL3 register row, type 18 in the Write
Value edit box to enable SCOC and SCGC
registers. Press the Write button.
the
the
_______________________________________________________________________________________
IMPD
IMPD
MAX11206/MAX11207,
Calibration Notes
group
group
box,
box,
select
select
MAX11213 Evaluation Kits
and
the
the
3)
4)
5)
In the CTRL3 register of the MAX11206, MAX11209,
MAX11210, and MAX11213 devices, there are 3 digital
gain bits that control the input-referred gain. The user
can change the gain by typing a new value in the CTRL3
Programmable Gain Register Bits
e.
a.
b.
c.
d.
e.
a.
The second step of the system calibration is to
perform a system gain calibration. The SOC register
must be enabled before a system gain calibration
is performed.
To enable the calibration coefficients:
Continue to perform a measurement by connecting
AINP and AINN to the measurement target.
Press the Send button. The device performs
a system offset calibration with self-calibration
registers enabled.
This is a conversion with the inputs held at
system full-scale reference. For the EV kit, one
option is to place the shunt on JU9 across pins
1-2 (AINP = REFP = 3.0V) and place the shunt
on JU8 across pins 3-4 (AINN = REFN = GND).
In the case of a user system, the user should
apply the target system full-scale reference to
the AINP and AINN inputs.
In the CAL1, CAL0 group box, select the
11 – System Gain Calibration radio button.
In
0 – Calibration/Conversion radio button.
In the CTRL3 register row, type 10 in the Write
Value edit box to enable the system offset
register and the self-calibration registers. Press
the Write button.
Press the Send button. The device performs a
system gain calibration.
In the CTRL3 register row, type 00 in the Write
Value edit box. Press the Write button. All the
self and system calibration gain and offset
values are used in the calculation of the
conversion result.
the
IMPD
group
box,
select
the
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