3.4 Power-Supply Options
The TLA2024 supports a wide range of supply voltage from 2 V to 5.5 V. The TLA2024EVM ADC voltage (VDD)
can operate from either 3.3 V or 5 V. The power is supplied from the USB 5-V source to the PAMBoard.
However, the USB power supply voltage is not consistent from PC to PC. A DC/DC converter increases the USB
output to 5.5 V. A linear low drop out (LDO) regulator uses the 5.5 V to establish a clean and stable 5 V and 3.3
V for the TLA2024EVM-PDK.
When the USB cable is plugged into the PC, two LEDs will light on the PAMBoard (see
LED (D5) indicates that the 5-V output is active. The top LED (D1) indicates that the TLA2024EVM-PDK is ready
to communicate with the GUI.
Figure 3-4. LED Indicators D1 and D5
Jumper JP1 selects the operating voltage for the TLA2024 (see
). When jumper JP1 is in the bottom
position, the VDD to the TLA2024 is set to 5-V and when in the top position, the VDD supply is set 3.3-V.
Figure 3-5. TLA2024 Supply Setting Jumper (JP1)
TLA2024EVM-PDK Overview
SBAU368 – FEBRUARY 2021
TLA2024EVM-PDK User's Guide
11
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