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EVM Operation

6.2 Usage as a Stand-Alone EVM

If using the EVM in your own system and not with the PDK hardware and software, observe the following

recommendations:

• J13 should be removed if the external clock source is used and the TOUT pin is still driven by a

processor in order to avoid conflicts.

• Jumper J2 can be used to always select the U8 oscillator (DVDD position) or allow the

onboard/external clock selection to be controlled by GPIO5 (J7.19) as shown in Figure 2.

Figure 2. Jumper J2

7 EVM Operation

This section provides information on the analog input, digital control, and general operating conditions of

the ADS1248EVM.

7.1 Analog Input

Each of the analog input sources can be applied directly to J8 (top or bottom side) or through

signal-conditioning modules available for the the modular EVM system. Terminal block J4 is connected in

parallel with the analog signal connections to J8. Each input has a 47Ω/47pF RC filter in series with it, and

a differential 0.1μF capacitor is placed across each input pair for use with differential signals.

7.2 Digital Control

The digital control signals can be applied directly to J7 (top or bottom side). The modular ADS1248EVM

can also be connected directly to a DSP or microcontroller interface board, such as the 5-6K Interface or

HPA-MCU Interface boards available from Texas Instruments, or the MMB3 if purchased as part of the

ADS1248EVM-PDK. For a list of compatible interface and/or accessory boards for the EVM or the

ADS1248, see the relevant product folder on the TI web site.

SBAU142B– April 2009–Revised May 2011 ADS1148EVM, ADS1248EVM, ADS1148EVM-PDK, and ADS1248EVM-PDK

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ADS1248EVM-PDK Kit Operation

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7.3 Default Jumper Settings and Switch Positions

Figure 3 shows the jumpers found on the EVM and the respective factory default conditions for each.

Figure 3. ADS1248EVM Default Jumper Locations

Table 6 lists the switches found on the EVM and the respective factory default conditions for each.

Table 6. List of Switches

Switch Default Position Switch Description

S1 Left Onboard reference

8 ADS1248EVM-PDK Kit Operation

This section provides information on using the ADS1248EVM-PDK, including setup, program installation,

and program usage.

To prepare to evaluate the ADS1248 with the ADS1248EVM-PDK, complete the following steps:

Step 1. Install the ADCPro software (if not already installed) on a PC.

Step 2. Install the ADS1248EVM-PDK EVM plug-in software.

Step 3. Complete the USB driver installation process.

Step 4. Set up the ADS1248EVM-PDK.

Step 5. Connect the ADS1248EVM-PDK to the computer with a USB cable.

Step 6. Run the ADCPro software.

Each task is described in the subsequent sections of this document.

ADS1148EVM, ADS1248EVM, ADS1148EVM-PDK, and ADS1248EVM-PDK SBAU142B– April 2009–Revised May 2011

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ADS1248EVM-PDK Kit Operation

8.1 Installing the ADCPro Software

CAUTION

Do not connect the ADS1248EVM-PDK before installing the software on a

suitable PC. Failure to observe this caution may cause Microsoft Windows to

not recognize the ADS1248EVM-PDK as a connected device.

The CD-ROM shipped with the ADS1248EVM contains an installer for ADCPro as well as an installer for

the ADS1248EVM plug-in. The latest software is available from the TI website at http://www.ti.com/. Refer

to the ADCPro User Guide for instructions on installing and using ADCPro.

To install the ADS1248EVM-PDK plug-in, run the file: ads1248evm-pdk-plug-in-1.0.0.exe (1.0.0 is the

version number, and increments with software version releases; you may have a different version on your

CD). Double-click the file to run it; then follow the instructions shown. You can also utilize the ADCPro

Update Check feature to check for newer versions of the ADS1248EVM-PDK plug-in, once you have

installed a version of it.

Follow the on-screen prompts. Once the ADCPro plug-in installs, you will be prompted to install the Virtual

COM port driver as shown in Figure 4.

Figure 4. Virtual COM Port Installer

Press OK, and the screen shown in Figure 5 is displayed.

Figure 5. Virtual COM Port Setup

If you already have a TUSB3410 Virtual COM port driver installed on your system, select Cancel;

otherwise, press Setup and follow the on-screen prompts. You may be notified that the driver is not

digitally signed. If this message appears, select Continue Anyway and proceed.

SBAU142B– April 2009–Revised May 2011 ADS1148EVM, ADS1248EVM, ADS1148EVM-PDK, and ADS1248EVM-PDK

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Part #	ERJ-3EKF2001V
Description	RES THKFLM 0603 2K OHM 1% 1/10W 100PPM/ C SMD - Cut TR (SO
Category	RESISTOR
Availability	Out of Stock
Qty	0

ERJ-3EKF2001V

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