The TRF1108 evaluation module (EVM) is used to evaluate the TRF1108 device, which is a differential input to single-ended (D2S) output RF amplifier. The device is designed for applications that require a D2S conversion when driven by a digital-to-analog converter (DAC)
The board is set up for 100Ω differential input matching. The amplifier has a low output impedance. The board has ac-coupling capacitors at input and output. The EVM is ready to connect to a +5-V power supply, signal source, and test instruments for the measurements.
The basic steps and functions that are required to verify the proper operation and quick setup of the TRF1108EVM. This document also includes a schematic diagram, a bill of materials (BOM), printed-circuit board (PCB) layouts, and test block diagrams is outlined in this document. Throughout this document, the abbreviations EVM, TRF1108EVM and the term evaluation module are synonymous with the TRF1108-EVM, unless otherwise noted.
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Hot surface. Contact can cause burns. Do not touch. |
Item | Quantity |
---|---|
TRF1108EVM | 1 |
Connector | Parameter | Value |
---|---|---|
J2 |
J2.1 VDD J2.2 VSS |
VDD = 5V VSS = GND |
J5 |
J5.1 VSS J5.2 GND |
Short |
J13 |
PD2 Select |
Short 1,2 (V_PD) to disable Ch2 Short 2,3 (GND) to enable Ch2 |
J18 |
RF Output | |
J19 |
RF Input INP |
Max 20dBm |
J20 |
RF Input INP |
Max 20dBm |
The TRF1108 is a very high performance, differential-to-single-ended (D2S) RF amplifier that has an operational bandwidth from true-dc to 12GHz. The device is excellent choice for applications that require a D2S conversion when driven by a digital-to-analog converter (DAC) such as the high-performance DAC39RF10 or AFE7950. The on-chip matching components simplify printed circuit board (PCB) implementation and provide the highest performance over the usable bandwidth. The device is fabricated using Texas Instruments’ advanced complementary BiCMOS process and is available in a space-saving, WQFN-FCRLF 2mm x 2mm package.
The TRF1108 operates on a single 5V supply with an internally set common-mode voltage for ac-coupled applications. Dual supplies with an externally set input common-mode voltage enables dc-coupled applications. A power-down feature is also available for power savings.