Texas Instruments LDC1101EVM - Page 23

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The GUI controls provide the following functions:
LHR Configuration Controls
Control Function Recommended LDC1101
LDC1101 Setting Register Field
RP Minimum Sets the maximum current drive. 4kΩ RP_MIN
For higher loss coils, or if there is a larger amount of
conductive material in the vicinity of the sensor, this
setting may need to be decreased.
If the Optimize LHR measurement is set, then only the
RP_MIN setting is used to control sensor signal amplitude.
Optimize LHR measurement Disables R
P
measurement sensor modulation. This can Enabled D_CONFIG +
improve L measurement accuracy. ALT_CONFIG
Reference Count Set the LHR mode reference count – which is the number >1000 LHR_REF_CO
of reference clock cycles used to measure the sensor UNT
frequency. The higher this number, the higher the
resolution of the frequency, although the measurement will
take longer.
Offset Sets the LHR mode offset count – this value is subtracted 0 LHR_OFFSET
off of the measurement.
Clock Divider Set LHR Sensor Divider. Only necessary when f
SENSOR
> Not divided SENSOR_DIV
f
REFERENCE
.
This control is included only to provide comprehensive
configuration control, as the LDC1101EVM Reference
frequency of 12MHz is greater than the maximum sensor
frequency of 10MHz.
Reference Frequency Source Used to bring LDC1101 out of shutdown. Normal SHUTDOWN
This control is included only to provide comprehensive
configuration control and is not necessary for EVM
functionality.
INTB Disable Set INTB reporting. Do Not Report INTB_FUNC
DRDY
This control is included only to provide comprehensive
configuration control and is not necessary for EVM
functionality.
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SNOU137–May 2015 LDC1101EVM PC Software (GUI)
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