Texas Instruments BOOST-LDC3114EVM User manual

User’s Guide
BOOST-LDC3114 Evaluation Module User's Guide
ABSTRACT
This user's guide describes the characteristics, operation, and use of the BOOST-LDC3114 Evaluation Module
(EVM). Complete schematic diagrams, printed-circuit board layouts, and bill of materials are included in this
document.
Table of Contents
1 Overview..................................................................................................................................................................................2
1.1 EVM Kit Contents...............................................................................................................................................................3
1.2 Compatible Sensors...........................................................................................................................................................3
1.3 Main EVM Elements...........................................................................................................................................................3
2 EVM GUI...................................................................................................................................................................................4
2.1 System Requirements........................................................................................................................................................4
2.2 Installation.......................................................................................................................................................................... 4
2.3 Navigation.......................................................................................................................................................................... 5
2.4 Firmware Updates..............................................................................................................................................................7
3 Schematic................................................................................................................................................................................8
4 Layout...................................................................................................................................................................................... 9
5 Bill of Materials..................................................................................................................................................................... 10
Trademarks
All trademarks are the property of their respective owners.
www.ti.com Table of Contents
SNOU181 – FEBRUARY 2021
Submit Document Feedback
BOOST-LDC3114 Evaluation Module User's Guide 1
Copyright © 2021 Texas Instruments Incorporated

1 Overview
The LDC3114EVM demonstrates the use of inductive sensing technology to sense and measure the presence or
position of a conductive target object and to detect the press of an inductive touch button. The LDC3114EVM is
controlled by an MSP432, which connects to a host computer.
The EVM is comprised of two boards, the LDC board and the MSP board. This is set up as a boosterpack and
allows the LDC board to be used with a different microcontroller.
Figure 1-1. BOOST-LDC3114EVM
Figure 1-2. LDC3114EVM and PAMB Controller
Overview www.ti.com
2BOOST-LDC3114 Evaluation Module User's Guide SNOU181 – FEBRUARY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

1.1 EVM Kit Contents
Table 1-1 details the contents of the EVM kit. Contact the nearest Texas Instruments Product Information Center
if any components are missing.
Table 1-1. EVM Kit Contents
Item Quantity
BOOST-LDC3114EVM 1
PAMB Controller Board 1
Micro-USB Cable 1
1.2 Compatible Sensors
The LDC3114EVM includes four identical example sensors that are perforated so they can be removed and
replaced with different sensors by soldering onto the provided header pin locations. The LDCCOILEVM and
LDCTOUCHCOMCOILEVM both have compatible sensors that can be used with the LDC3114EVM. Other
sensors can be connected to the input headers with an unshielded twisted pair of wires.
1.3 Main EVM Elements
Figure 1-3 shows the layout of the LDC3114EVM and points out various features. The sensor coils are located
on a perforated section of the board so that they can be placed remotely from the sensor or replaced with other,
compatible sensors by using the sensor connection headers.
The LDC3114EVM has multiple test points designated for the power, ground, I2C, and output pins. Additionally,
the button detection LEDs on the output pins are located in the center of the board.
Figure 1-3. EVM Features
www.ti.com Overview
SNOU181 – FEBRUARY 2021
Submit Document Feedback
BOOST-LDC3114 Evaluation Module User's Guide 3
Copyright © 2021 Texas Instruments Incorporated

2 EVM GUI
The LDC3114EVM GUI provides direct device register access and data streaming.
2.1 System Requirements
The LDC3114EVM software is compatible with Windows, Mac, and Linux operating systems. The online
software works with Chrome, Firefox, and Safari browsers.
2.2 Installation
The GUI software for the LDC3114EVM runs on TI's GUI Composer framework. The software is available as a
live version that runs in a browser and as a download for offline use.
Download and install the PAMB Controller drivers from https://www.ti.com/lit/zip/sbac253. This is a one-time only
setup.
Access the online version by navigating to https://dev.ti.com/gallery/search/LDC3114EVM_GUI. To access the
offline GUI, mouse over the download icon, select your operating system from the list and follow the installation
instructions.
Figure 2-1. Download Pop-Up
EVM GUI www.ti.com
4BOOST-LDC3114 Evaluation Module User's Guide SNOU181 – FEBRUARY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

2.3 Navigation
For first time use, follow the prompts for TI Cloud Agent Installation:
Figure 2-2. Initial GUI Setup
After successful completion of the previous steps it should read "Hardware Connected" in the bottom left corner.
If the hardware is not recognized, select Options->Serial Port..., then select the correct port and click "Ok".
The main page has the device name and links to other pages in the GUI.
2.3.1 Registers
The Registers page allows the user to read and write to the device registers. Additionally, the Auto Read function
will default to Off, but can be set to the following speeds:
• Every 1 sec
• Every 5 sec
• Every 10 sec
• Every 20 sec
• Every 30 sec
• Every 60 sec
• As fast as possible
Figure 2-3. Registers Page
www.ti.com EVM GUI
SNOU181 – FEBRUARY 2021
Submit Document Feedback
BOOST-LDC3114 Evaluation Module User's Guide 5
Copyright © 2021 Texas Instruments Incorporated

2.3.2 Data Plot
In the Data Plot tab the data will be read as fast as the register is set. The graph can be configured as either
Button Data or Raw Data, depending on register settings.
Make sure to select the correct view for the selected data, either Button Data or Raw Data. The data plot can be
saved as a .csv file or cleared by clicking either the "Save Plot" or "Clear Plot" icons.
Figure 2-4. Data Plot
2.3.3 Settings
The Settings page has select register settings that can be controlled directly, as well as GPIO settings.
Figure 2-5. Settings
EVM GUI www.ti.com
6BOOST-LDC3114 Evaluation Module User's Guide SNOU181 – FEBRUARY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

2.3.4 Collateral
The Collateral page is where the user can find links to various resources, including data sheets, application
notes, firmware, and any applicable reports.
Figure 2-6. Collateral Page
2.4 Firmware Updates
If there are issues with the PAMB controller such that it is unable to connect to the GUI or the LEDs do not light
the firmware may need to be re-flashed via batch file.
Before this can be done the PAMB controller must be put back into Device Firmware Upgrade (DFU) mode. The
steps to put the controller into DFU mode are as follows:
1. With the USB cable unplugged, remove the LDC3114 daughter card from the PAMB.
2. Locate the two test points near the PK1 and PK2 header pins.
3. Reconnect the USB cable to power the USB board.
4. With a pair of metal tweezers or wire, short and hold the connection between the PK1 and PK2 test points.
5. With the test points still shorted, press and release the RESET button (SW1) on the PAMB board.
6. If successful, none of the LEDS on the PAMB board will be on.
7. Launch the LDC3114EVM GUI.
8. Navigate to File > Program Device to launch the firmware update. Wait for the firmware to update and do not
disconnect the USB cable or press the RESET button during the update.
9. Once the update is complete the EVM firmware should reboot and connect to the GUI. If it doesn't reconnect
momentarily, press the RESET button OR unplug and plug in the USB cable to reconnect.
www.ti.com EVM GUI
SNOU181 – FEBRUARY 2021
Submit Document Feedback
BOOST-LDC3114 Evaluation Module User's Guide 7
Copyright © 2021 Texas Instruments Incorporated

3 Schematic
GND
OUT0
GND GND GND
OUT3
Green
1
2
D2
Green
1
2
D3
Green
1
2
D4
Green
1
2
D5
OUT1 OUT2
3
5
4
Q2A
MMDT3904-7-F
6
2
1
Q2B
MMDT3904-7-F
3
5
4
Q3A
MMDT3904-7-F
6
2
1
Q3B
MMDT3904-7-F
+3.3V +3.3V +3.3V +3.3V
1.0k
R5
1.0k
R6
1.0k
R7
1.0k
R8
4.70k
R9
4.70k
R10
4.70k
R11
4.70k
R12
Design note: 4mA
Bridge between LDC and MSP430
Button press LEDs
Sensor connectors
PU/PD for LDC inputs
LPWRB
INTB
SCL
OUT0
SDA
OUT1
OUT2
OUT3
IN2
IN1
IN0
GND
+1.8V
COM
GND GND
LDC3114
Layout note: move to bottom side
+1.8V
GND
LPWRB
Silk: BOOST-LDC3114EVM, SENS072A
Silk: Draw Silkscreen box around red area
Silk: OUT0 Silk: OUT1 Silk: OUT2 Silk: OUT3
Silk: GND
Design note: Default to pullup
Layout note: move C1,C2,C3,C4 close to DUT
Design note: OUTPUTS must be configured as active high in device register settings
Level shift from 1.8V LDC211x to 3.3V MSP430
Design note: DIR=Hi sends signals from A ports to B ports
Design note: PD for LDC3114
Design note: Send INTB LDC3114->MSP430
Design note: Send LPWRB MSP430->LDC3114
SDA
SCL
1uF
C8
0.1uF
C9
Design note: DIR=Hi sends signals from A ports to B ports
IN
1OUT 5
2
EN
3NC 4
GND
U2 PM-REG-LP3990- SOT5
+3.3V
2.2uF
C4
+1.8V
GND
GND
2.2uF
C3
GND
Power: 1.8V LDO for LDC211x
Silk: +1.8V
47pF
C11
47pF
C12
47pF
C13
47pF
C14
GND
IN3
1000pF
C16
PM7
PA7
PQ1
PM6
PQ2
PQ3
TARGET_RESET
PN3
PN2
PG1
PK4
PK5
PM0
PM1
PM2
PH0
PH1
PK6
PK7
PB4
PB5
PK0
PK1
PK2
PK3
PA4
PA5
+5V
+3.3V
PD2
PP0
PP1
PQ0
PH3
PN5
PN4
PD4
PD5
GND
GND
1
3
5 6
4
2
7
9 10
8
1211
1413
1615
1817
2019
J1
1
3
5 6
4
2
7
9 10
8
1211
1413
1615
1817
2019
J2
PK7
PK6
PH1
PH0
PM2
PN5
PN4
PM1
Note: Maps the LDC pins to the PAMB pins
GND
Green
1
2
D1
6
2
1
Q1B
MMDT3904-7-F
+3.3V
1.0k
R1
4.70k
R4
1
2
J10
Header_2x1
+3.3V+3.3V
IN0
1.00k
R13
1.00k
R15
IN1
1.00k
R14
1.00k
R16
IN2
IN3
Design Note: DNP 1K RES
IN0 IN2
IN3IN1
OUT0 OUT1 OUT2 OUT3
LPWRB INTB
SCL SDA
1.8V
GND
0
R2
0
R3
1
2
J9
Header_2x1
1
2
J8
Header_2x1
1
2
J7
Header_2x1
1
2
J6
Header_2x1
1
2
J5
Header_2x1
1
2
J4
Header_2x1
1
2
J3
Header_2x1
390pF
C17
390pF
C15
390pF
C7
390pF
C10
Design note: Perforate between sensors and between c onnectors
Design note: DNP Jumpers
IN0
COM
IN1
COM
COM
COM
IN3
IN2
INTB
LPW RB_3.3
4.70k
R17
4.70k
R18
1A1
6
1OE 1
VCCB 2
1DIR
4
VCCA
3
2DIR
5
1A2
7
2A1
8
2A2
9
GND 10
GND 11
2B2 12
2B1 13
1B2 14
1B1 15
2OE 16
U3
SN74AVCH4T245RSV
+1.8V+3.3V
0.1uF
C6
0.1uF
C5
OUT1
GND
GND
OUT1_3.3
OUT0_3.3 OUT0
GND
GND OUT3_3.3
OUT2_3.3
OUT2
GND
OUT3
1A1
6
1OE 1
VCCB 2
1DIR
4
VCCA
3
2DIR
5
1A2
7
2A1
8
2A2
9
GND 10
GND 11
2B2 12
2B1 13
1B2 14
1B1 15
2OE 16
U1
SN74AVCH4T245RSV
+1.8V+3.3V
0.1uF
C2
0.1uF
C1
LPWRB
+3.3V
GND
GND
GND
LPWRB_3.3
1.00k
R19
COM
COM
1
IN0
9
IN1
8
IN2
7
IN3
6
SDA
14
VDD
4
GND 2
GND 10
INT 5
LPW R 3
OUT0 15
OUT1 13
OUT2 12
OUT3 11
SCL
16
LDC3114PWR
U4
COM
Figure 3-1. Schematic
Schematic www.ti.com
8BOOST-LDC3114 Evaluation Module User's Guide SNOU181 – FEBRUARY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated

4 Layout
Figure 4-1. Top View Layout
Figure 4-2. Bottom View Layout
www.ti.com Layout
SNOU181 – FEBRUARY 2021
Submit Document Feedback
BOOST-LDC3114 Evaluation Module User's Guide 9
Copyright © 2021 Texas Instruments Incorporated

5 Bill of Materials
Table 5-1. BOOST-LDC3114EVM BOM
Designator QTY Value Description Package Reference Part Number Manufacturer
!PCB1 1 Printed Circuit Board SENS072 Any
1.8V, COM,
GND, IN0, IN1,
IN2, IN3, INTB,
LPWRB, OUT0,
OUT1, OUT2,
OUT3, SCL,
SDA
15 Test Point, Miniature, SMT Testpoint_Keystone_
Miniatur
e
5015 Keystone
C1, C2, C5, C6,
C9
5 0.1uF CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R,
0402
0402 C1005X7R1H104K0
50BB
TDK
C3, C4 2 2.2uF CAP, CERM, 2.2 uF, 10 V, +/- 10%, X5R,
0603
0603 C0603C225K8PACT
U
Kemet
C7, C10, C15,
C17
4 390pF CAP, CERM, 390 pF, 50 V, +/- 1%, C0G/
NP0, 0603
0603 CC0603FRNPO9BN
391
Yageo America
C8 1 1uF CAP, CERM, 1 uF, 6.3 V, +/- 20%, X7R,
0402
0402 GRM155R70J105M
A12D
MuRata
C11, C12, C13,
C14
4 47pF CAP, CERM, 47 pF, 50 V, +/- 1%, C0G/NP0,
0603
0603 GRM1885C1H470F
A01J
MuRata
C16 1 1000pF CAP, CERM, 1000 pF, 50 V, +/- 1%, C0G/
NP0, 0603
0603 GRM1885C1H102F
A01J
MuRata
D1, D2, D3, D4,
D5
5 Green LED, Green, SMD 1.7x0.65x0.8mm LG L29K-G2J1-24-Z OSRAM
H1 1 Kitting Item: PAMB Controller DC081 Texas Instruments
H2 1 Kitting Item: 3025010-03; Cable, USB A
MALE to Micro B MALE 3'; CDDS 6612041
6612041 Qualtek
J1, J2 2 Receptacle, 2.54mm, 10x2, Tin, TH Receptacle,
2.54mm, 10x2, TH
SSQ-110-03-T-D Samtec
Q1, Q2, Q3 3 40 V Transistor, Dual NPN, 40 V, 0.2 A, SOT-363 SOT-363 MMDT3904-7-F Diodes Inc.
R1, R5, R6, R7,
R8
5 1.0k RES, 1.0 k, 5%, 0.1 W, AEC-Q200 Grade 0,
0402
0402 ERJ-2GEJ102X Panasonic
R2 1 0 RES, 0, 5%, 0.1 W, AEC-Q200 Grade 0,
0603
0603 ERJ-3GEY0R00V Panasonic
R4, R9, R10,
R11, R12, R17,
R18
7 4.70k RES, 4.70 k, 1%, 0.1 W, 0402 0402 ERJ-2RKF4701X Panasonic
U1, U3 2 4-Bit Dual-Supply Bus Transceiver with
Configurable Voltage Translation and 3-
State Outputs, RSV0016A (UQFN-16)
RSV0016A SN74AVCH4T245R
SVR
Texas Instruments
U2 1 Micropower, 150mA Low-Dropout CMOS
Voltage Regulator, 5-pin SC-70, Pb-Free
DCK0005A LP5951MG-1.8/
NOPB
Texas Instruments
U4 1 4-channel hybrid inductive touch and
inductance to digital converter
TSSOP16 LDC3114PWR Texas Instruments
FID1, FID2,
FID3
0 Fiducial mark. There is nothing to buy or
mount.
N/A N/A N/A
J3, J4, J5, J6,
J7, J8, J9, J10
0 Header, 100mil, 2x1, Gold, TH 2x1 Header TSW-102-07-G-S Samtec
R3 0 0 RES, 0, 5%, 0.1 W, AEC-Q200 Grade 0,
0603
0603 ERJ-3GEY0R00V Panasonic
R13, R14, R15,
R16, R19
0 1.00k RES, 1.00 k, 1%, 0.1 W, 0603 0603 ERJ-3EKF1001V Panasonic
Bill of Materials www.ti.com
10 BOOST-LDC3114 Evaluation Module User's Guide SNOU181 – FEBRUARY 2021
Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated