Analog Interfacing Networks for DAC348x and Modulators
Description
The analog interface circuits in this reference design are often used between current-source based digital-to analog converters (DAC) and quadrature modulators. While the DAC348x is used as an example of a TI high-speed DAC: the circuits can be applied to other current-source based converters with slight modifications. The DAC348x and TRF3705 analog interface are populated by default on the TSW308xEVMs. Both the DAC348x and TRF3705 are designed with the same DC bias and AC swing specification to provide a seamless interface. Other circuit topologies are described to account for other DC bias and AC swing specifications. By accounting the correct DC bias and proper AC swing: system designers can apply these circuits based on their application needs in order to achieve optimal performance.
Features
- A breakdown of the interface on the TSW308x is explained to show the direct connection between the DAC3484 and TRF3705General Design equations of current source DACs with IQ modulators are provided and explainedTINA spice models are provided for different interface networks for DC: AC: and filtered interfaces to meet customer needs
Applications
- Electronic warfare
- Active antenna system mMIMO (AAS)
- Vector signal transceiver (VST)
- Macro remote radio unit (RRU)
- Wireless communications test
Product Categories
- Data converters
| Download the bill of materials for TIDA-00077 | Download |
Design File
Download ready-to-use system files to speed your design process. Get Viewer.
Download the design file for TIDA-00077Test Data
Get results faster with test and simulation data that's been verified.
Download the test file for TIDA-00077| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIDA-00077 Layer Plots | 03 Jun 2014 | ZIP | 3329 | |
| TIDA-00077 BOM | 03 Jun 2014 | 89 | ||
| TIDA-00077 Schematic | 03 Jun 2014 | 149 |