1µF
C5
0.1µF
C6
GND
GND
GND
1µF
C3
0.1µF
C4
GND
1
VREF_A
2
A1
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
10
B8
11
B7
12
B6
13
B5
14
B4
15
B3
16
B2
17
B1
18
VREF_B
19
EN
20
U3
LSF0108PW
200k
R15
SDA
/INT
/MIC_PRESENT
MSP430_/INT
MSP430_/MIC_PRESENT
MSP430_SDA
MSP430_SCL
VCC
4.7k
R16
4.7k
R17
4.7k
R18
4.7k
R19
VDDIO
SCL
1
2
3
4
5
6
7
8
J27
/MIC_PRESENT
SDA
SCL
/INT
RING1
TIP
MICP
SLEEVE
RING2
1
2
3
J17
1
2
3
J14
/DET_TRIGGER
GND_SENSE
VDD
J9
J8
J7
J11
J13
J6
TS3A227E-EVM Connections Overview
4.3
Test Points
The headers in
provide breakout test points on the EVM for connecting to external hosts and
systems.
Figure 4. Breakout Test Point Headers
4.4
Translator
Because the TS3A227E VDDIO supply can vary from 1.8 V to 4.5 V, a translator is needed to translate
the VDDIO voltage domain to the LaunchPad 3.6-V domain. U3 provides this functionality.
If the LaunchPad is not used, remove the jumpers on J27.
Figure 5. Translator
6
TS3A227E EVM User's Guide
SLVUAD9 – December 2014
Copyright © 2014, Texas Instruments Incorporated