Introduction
3
SLAU374B – December 2011 – Revised May 2016
Copyright © 2011–2016, Texas Instruments Incorporated
TSW308x Evaluation Module
1
Introduction
1.1
Overview
The TSW308x evaluation module (EVM) is a family of circuit boards that allow designers to evaluate the
performance of the Texas Instruments DAC348x digital-to-analog converters (DAC). The DAC348x family
consists of DAC3482, DAC3484, and DAC34H84. The 16-bit, 1.25 GSPS, DAC348x has integrated
2x/4x/8x/16x interpolation filters, 32-bit NCO, on-chip PLL, and exceptional linearity at high IFs. The EVM
provides a flexible environment to test the DAC348x under a variety of clock, data input, and RF output
conditions. For ease of use as a complete RF transmit solution, the TSW308xEVM includes the
LMK04806B low-noise, clock generator/jitter cleaner for clocking the DAC348x. Besides providing a high-
quality, low jitter DAC sampling clock to the DAC348x, the LMK04806B also provides FPGA clocks to the
TSW1400EVM (or TSW3100EVM) as FPGA reference clocks.
The TSW3085 (populated with DAC3482) has one pair of I/Q channel and is designed as a single RF
channel transmit solution, while the TSW3084 (populated with DAC3484) and TSW30H84 (populated with
DAC34H84) have two pairs of I/Q channel and are designed for dual RF channels transmit solution. Both
the TSW3085 and TSW30H84 can accept up to 625MSPS of input data rate for each I or Q channel. The
TSW3084 can be considered as a lower bus width alternative for the dual RF channel while accepting up
to 312.5MSPS of input data rate.
Each transmit channel of the TSW308x has the TRF3705 quadrature modulator, which follows
immediately after the DAC348x as part of the signal chain. Its output ranging from 300 MHz to 4 GHz, to
up-convert the I/Q outputs from the DAC to RF. The default RF signal paths is the direct TRF3705 I/Q
modulator output. To add flexibility to the RF evaluation, the modulator outputs can also connect to the
optional RF amplifier and programmable attenuator path to meet additional test conditions and
requirements.
The EVM can be used along with TSW1400 or TSW3100 to perform a wide varieties of test and
measurement. This board is also compatible with Altera
®
and Xilinx
®
FPGA development platforms for
rapid evaluation and prototyping. The on-board HSMC connector input allows direct connection to the
HSMC compatible Altera development platforms, and the externally attached FMC-DAC-Adapter board
available from TI enables the connection of the EVM to the Xilinx development platforms with FMC
headers.
Other DAC348x families can be evaluated on different EVM platforms. For details of the DAC348x family
and the corresponding EVM part number, see
.
Table 1. DAC348x Family
DAC Part No.
DAC3484
DAC3482
DAC34H84
DAC34SH84
EVM Part No.
TSW3084EVM
TSW3085EVM
TSW30H84EVM
TSW30SH84EVM
Output Channels
4
2
4
4
Maximum DAC Rate
1.25 GSPS
1.25 GSPS
1.25 GSPS
1.5 GSPS
Digital Interface
16-Bit LVDS Interface
16-Bit LVDS Interface
32-Bit LVDS Interface
32-Bit LVDS Interface
Maximum Data Rate per Channel 312.5 MSPS
625 MSPS
625 MSPS
750 MSPS
Maximum LVDS Bus Toggle
Rate
1.25 GSPS
1.25 GSPS
1.25 GSPS
1.5 GSPS
Pattern Generator Support
TSW1400/TSW3100
TSW1400/TSW3100
TSW1400/TSW3100
TSW1400/TSW3100 with
limited data rate support
See the DAC348x EVM web folders at:
http://www.ti.com/tool/dac3482evm
http://www.ti.com/tool/dac3484evm
http://www.ti.com/tool/dac34h84evm
http://www.ti.com/tool/dac34sh84evm
For evaluation of the DAC348x family with transformer coupled IF output, see the DAC348xEVM user's
guide (
).
For evaluation of the TSW30SH84 with the on-board DAC34SH84, see the TSW30SH84EVM user's guide
(
).
