DAC7573IPW datasheet(20/26 Pages) TI

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Factory Default Setting

3-2

3.1

Factory Default Setting

The EVM board is factory-configured to operate in unipolar 5-V output mode.

Table 3 - 1. DACx573EVM Factory-Default Jumper Configuration

DACx573 EVM CONFIGURATION

Reference

Jumper

Position

Function

1-2

Analog supply for the DACx573 is 5 VA.

1-2

DAC output A (VOUTA) is routed to J4-2.

Open

VREFH is not routed to the inverting input of the op

amp.

1-2

Onboard external buffered reference U3 is routed to

VREFH.

1-2

Negative supply rail of U2 op amp is supplied by VSS.

1-2

VREFL is tied to AGND.

Closed

A0 pin is tied to DGND.

Closed

A1 pin is tied to DGND.

Closed

A3 pin is tied to DGND.

W10

Closed

A2 pin is tied to DGND.

W11

1-2

DAC output B (VOUTB) is routed to J4-4.

W12

1-2

DAC output C (VOUTC) is routed to J4-6.

W13

1-2

DAC output D (VOUTD) is routed to J4-8.

W15

Closed

Output op amp U2 is configured for a gain of 2.

1-2

DAC output A (VOUTA) is connected to the noninvert-

ing input of output op amp U2.

3.2

Host Processor Interface

Because the host processor controls the DAC, proper operation depends on

the correct interface of the host processor and the EVM board. Properly written

code is also required to operate the DAC.

A host-platform-specific cable assembly can be made to connect the EVM to

the host processor through J2 for the I2C serial control and data signals. The

output is monitored through J4.

An interface adapter board is available for specific TI DSP starter kits as well

as for an MSP430-based microprocessor as mentioned in section 1.3. Using

the interface board alleviates the tedious task of building custom cables and

allows easy configuration of a simple evaluation system.

This DACx573 EVM interfaces with any host processor capable of I2C

protocols or the popular TI DSP. For more information regarding the serial

interface of the particular DAC installed, refer to the specific DAC data sheet,

as listed in the Related Documentation From Texas Instruments section in the

Preface of this user’s guide.

DAC7573IPW Datasheet(PDF) 20 Page - Texas Instruments

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