Datasheet

J13

POWER

SUPPLY

CONFIG

J12

WALLSUPPLYCONNECTION

ACADAPTERINPUT

ADS1258EVM-PDK Kit Operation

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8.4 Connecting the Power Supply

The ADS1258EVM-PDK can be operated with a unipolar +5V supply or a bipolar ±5V supply.

If the ADS1258EVM-PDK is to be operated in unipolar mode only, either an ac adapter or a lab power

supply can be used. If the ADS1258EVM-PDK is to be operated in bipolar mode, a ±5V power supply

must be connected; an ac adapter cannot be used.

When the MMB0 DSP is powered properly, LED D2 glows green. The green light indicates that the 3.3V

supply for the MMB0 is operating properly. (It does not indicate that the EVM power supplies are

operating properly.)

8.4.1 Connecting an AC Adapter

An ac adapter can be connected to barrel jack J2 on the MMB0. J2 is located next to the USB connector.

The adapter must output 6V–9V dc. The connector must be sleeve-negative, tip-positive. It should have a

current rating of at least 500mA, as shown in Figure 6.

When an ac adapter is used, the ADS1258EVM cannot be used in bipolar mode.

Jumper J12 on the MMB0 connects a wall-mounted power supply to the board. To use the wall-mount

supply, J12 must be shorted.

Figure 6. Connecting an AC Adapter

ADS1158EVM, ADS1258EVM, ADS1158EVM-PDK, and ADS1258EVM-PDK SBAU126C– May 2007– Revised May 2011

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