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Register Address
0x01
0x02
0x03
0x04
Sensor Configuration Options
Component footprints are available for a variety of configuration connections.
When operating in an electrically noisy environment or with extended distances to a remote sensor, it may
be necessary to populate C4+C5 to improve the measurement ENOB. The components are left
unpopulated by default, and the footprints are located on the bottom of the PCB. For additional noise
suppression, R1 & R2 can be removed and a common-mode choke (e.g. SRF3216-222Y) can be placed
into those two footprints.
In the rare case where EMI interference is caused by the LDC1101, it may be mitigated by populating
C6+C7 with capacitors that are approximately 10% of the value of C
unpopulated by default, and the footprints are located on the bottom of the PCB.
For some sensors, such as wire-wound inductors, it may not be easy to connect a sensor capacitor. A
second capacitor footprint – C
with the footprint located on the bottom of the PCB.
SNOU137 – May 2015
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LDC1101 Recommended Register Settings for EVM Sensor
Figure 2-7. Sensor Configuration Options
Figure 2-8. Unpopulated Footprints on EVM Bottom
- is included for such a situation. This is left unpopulated by default,
SENSOR2
Copyright © 2015, Texas Instruments Incorporated
Value
0x36
0xDD
0xFD
0xCX (set lower nibble based on desired response time)
. The components are left
SENSOR
EVM Features and Connections
Break-Away Sections
9
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