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dc1880af

DEMO MANUAL DC1880A

Quick start proceDure

DC1880A is a 6-layer demonstration board. An LDO is

signals interrupt requests.

1. Install, or update as needed, Linear Technology's

QuikEval™ evaluation software on the PC. See Using

the LTC2874 Software section for more information.

2. Connect the DC590 board to the PC with a standard

USB A/B cable.

3. Connect the DC1880A board to the DC590 board using

the14-conductorribboncablesuppliedwiththeDC590

board.

4. ChoosethesourcefortheVLlogicsupply—theDC590,

the LDO on the DC1880A, or either if both are set to

the same voltage:

a. SettheDC1880ALDOjumpers(JP11andJP12)and

DC590 VCCIO jumper (JP6) to one of the combina-

tions listed in Table 1. Default jumper positions set

both boards to 5V.

b. When using a Linduino™ One instead of a DC590

board, set the DC1880A LDO to 5V (JP11 = 5.0V)

or disable it (JP12 = OPEN).

5. Before connecting the input power supply to the

DC1880A board, verify the voltage is below 40V

(normally between 8V and 30V) and that the supply

is turned off.

the DC1880A board as shown in Figure 1.

7. Connect line interface cables (up to 20m long) to either

the screw-terminal blocks (J1-J4) or the IO-Link con-

nectors (J5-J8).

8. Turn on the 24V power supply and verify that the IRQ

LED on the DC1880A board is lit. (The LTC2874 is

signalling that one or more of its supplies had been

low.)

9. Launch the GUI software. Refer to the Using the

LTC2874 Software section for more information on

how to control the LTC2874 using the GUI.

10.Clear the IRQ condition by clearing any Supply Event

bits that are set. On the Events tab, simply click on any

lamps that are lit.

11.Refer to the Additional Information section and the

data sheet for operating details.