Datasheet

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Software and SPI Registers

3.7 Input Common Mode

Jumper P21 can be used to force a common mode on the ADC inputs. In its default configuration, the

evaluation board has capacitively coupled ADC inputs, and using the Input Common Mode jumper will not

have any effect.

3.8 Default Jumper and Switch Settings

On delivery, the board’s jumpers and switches should be set as defined in Table 1. Any directions are

defined when the board is positioned as in Figure 1.

Table 1. Board Jumpers and Switches

Jumper or Switch Default Position

P2 Open

P4 Closed

P13 Closed

P15 Closed

P17 Closed

P21 Open

S2 Left (On Board Clock)

S3 Left (Sleep mode not active)

4 Software and SPI Registers

The ADC12EU050 evaluation board is designed to be used with the WaveVision5™ data capture board

and software. The latest version of the WaveVision5™ software must be used.

4.1 SPI Registers

As described in the ADC12EU050 datasheet, there are many user registers accessible via the SPI

interface.

These registers can all be programmed via the “Registers” tab in the WaveVision5™ software.

All registers and values are described in the ADC12EU050 data sheet, which is available from the Texas

Instruments website.

SNAU020–September 2013 ADC12EU050: Ultra-low Power, Octal, 12-bit, 45MSPS Sigma-Delta Analog-

to-Digital Converter

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