TSW3070EVM Introduction
18
SLWU055A – May 2008 – Revised May 2016
Copyright © 2008–2016, Texas Instruments Incorporated
TSW3070EVM: Amplifier Interface to Current Sink DAC - Arbitrary Waveform
Generator Demonstration
6.3
USB Interface
The TSW3070EVM contains a 4-pin USB port connector to interface to a USB 1.1 or later compliant USB
port. Programming of the CDCM7005 and DAC5682Z is accomplished through this port.
6.4
Power Management
The TSW3070 EVM requires an input of 6 VDC (refer to
for details). A current rating of at
least 2 A is recommended for the 6-V supply. The rest of the supplies: 3.3, 1.8, ±5 V are all generated on
the board with linear regulators.
7
Demonstration Kit Test Configuration Test Equipment 7.1 Test
7.1
Test Setup
The test setup for the TSW3070EVM is shown in
. This setup shows the TSW3100 pattern
generator supplying an LVDS signal to the TSW3070EVM (see the TSW3100 product folder,
http://www.ti.com/tool/tsw3100evm
Figure 6. TSW3070EVM Driven by TSW3100 Pattern Generator
7.2
Test Equipment
The following test equipment is required for testing the .TSW3070EVM. Some other equipment may be
used; however, results may vary due to limitations of the instruments.
•
Power supply 6 VDC at 2 A
•
Spectrum Analyzer: Rhode & Schwarz FSU, FSQ, or equivalent
•
Pattern generator: TSW3100 using LVDS mode, or some other LVDS capable pattern generator
•
Oscilloscope: Probe clock and data lines for trouble shooting, measure voltage waveform in time
domain
•
Digital voltmeter to verify signal levels
7.3
Calibration
In order to measure the proper output power, the insertion loss of the analyzer cable must be calibrated.
Measure a calibrated 0-dBm source to see how much loss is in the cable at the frequency of interest.
