National Semiconductor DAC5682Z, Руководство пользователя

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Key Texas Instruments Components
5 SLWU055A – May 2008 – Revised May 2016
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TSW3070EVM: Amplifier Interface to Current Sink DAC - Arbitrary Waveform
Generator Demonstration
3.4 OPA695, THS3091, THS30915
These both provide the differential-to-single-ended conversion for the DAC5682Z output. The OPA695 is a
wide bandwidth (1400 MHz) high-performance operational amplifier (see data sheet
SBOS693 ). The
THS3095 is high-performance operational amplifier capable of driving large voltages (20+ V). For more
information about the THS3091 and THS3095 devices, see the data sheet,
SLOS423 .
Both DAC outputs have optional transformer outputs to bypass the operational amplifiers, if needed. There
are also options to bypass the onboard supplies to use higher external operational amplifier supplies.
The amplifier circuits can be further optimized by following the guidelines in the application report,
SBAA135 . This optimization can be performed once the final filter and gain components have been
selected.
4 Software Installation
The enclosed CD-ROM contains all of the necessary software that is needed for the host personal
computer (PC) to control the DAC5682Z and CDCM7005 on the TSW3070EVM. The interface software is
a graphical user interface (GUI) that allows all the registers to be programmed in the CDCM7005 and the
DAC5682Z. Once the software is installed, the GUI is accessible from the Start
→ All Programs → Texas
Instruments DACs → DAC5682z EVM Control. This GUI was originally used for the TSW3082
(RF modulator) but is also applicable for the TSW3070EVM.
4.1 DAC5682Z USB Control Software Installation
Copy the DAC5682z software from the provide CD to a local drive on a PC. Execute the setup.exe file.
This starts the DAC5682Z control software installation.