Texas Instruments EVM430-FR6043, User Manual, Page: 11 / 13

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AFE Configuration
11 SLAU764 – January 2019
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EVM430-FR6043 hardware guide
4 AFE Configuration
The EVM430-FR6043 includes circuitry for additional amplification and to filter. The following sections
describe how to configure this AFE.
4.1 Power Source
To use the same voltage source as the MCU, set JP3. To use an external voltage source, remove the
jumper from JP3 and apply voltage to TP1 (V+) and TP2 (GND) (see
Figure 13 ).
Figure 13. MCU Voltage Source
4.2 TX Voltage
Use JP2 to set the transmit voltage level to 3.3 V or 5 V. For 5-V operation, also set JP1 (see Figure 14 ).
Figure 14. 5-V Configuration
4.3 5-V Enable
The AFE includes a DC/DC step-up converter to enable 5-V TX voltage. To enable the step up converter,
set JP1. For 5-V operation, also set JP2 for 5-V operation (see
Figure 14 ).