Datasheet

4-1

Power Supply Options

The ADS8342 modular EVM board requires ±5 VDC for the ADS8342 circuit.

Positive 3.3 VDC is required for the digital circuitry found on the EVM. Power

to the EVM is applied to the 10-pin dual-row header/socket combination of J2.

When used in combination with one of the DAP Interface boards, the socket

portion of J2 (bottom side of the PWB) provides connection to the common

power bus described in document SLAU104. The pin portion may be used to

allow stacking of future DAC boards, or as a convenient point to apply external

power supplies in stand-alone operation. The following table shows the pin out

of J2.

Signal Pin Number Signal

Unused 1 2 Unused

+5VA 3 4 Unused

DGND 5 6 AGND

Unused 7 8 Unused

+3.3VD 9 10 +5VD

Note: While filters are provided for all power supply inputs, optimal performance of the EVM

requires a clean, well-regulated power source.

Chapter 4