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3
EVM Test Configuration
3.1
Test Block Diagram
The test setup for general testing of the TRF3711xx is shown in
3.2
Test Equipment
The following equipment is required for completing RF testing:
● Power supply with current readout
● Signal generator for input signal
● Signal generator for LO signal
● Spectrum analyzer
● Programming computer
3.3
Calibration
The RF cables should be good-quality RF cables because of the high-frequency signals.
NOTE: There is approximately 1 dB of insertion loss for the input traces and balun on the printed
circuit board (PCB).
•
Measure the insertion loss of the RF input cable and use this value to compensate for the desired input
power.
•
Measure the insertion loss of the LO input cable and use this value to compensate for the desired LO
power.
•
BB loss factor: If using the onboard transformers to interface with 50-Ω test equipment, then there is
approximately 12 dB of loss associated with the voltage transformation and transformer loss.
4
Basic Test Procedure
This section outlines the basic test procedure for testing the EVM. This section is divided into three test
sections: DC Test, Basic RF Test, and Advanced RF Test. The first section requires only power supply
with current readout and a computer for programmability. The second section requires basic RF test
equipment and basic technical know-how. The third section is for reference and requires specialized
equipment and setup. Only
4.1
DC Test
1. Connect +5 V to J11; connect ground to J12.
2. Engage power supplies.
3. Verify current is 385 mA ± 25 mA.
SLWU069B – February 2010 – Revised November 2010
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Computer
Terminal
J1
Signal Generator
J6
RF
J11 J12
Power
5V
Supply
Gnd
Figure 3. Test Setup Block Diagram
Section 4.1
and
Section 4.2
Copyright © 2010, Texas Instruments Incorporated
Figure
3.
J3
Signal Generator
DUT
J 7
LO
J10
Spectrum Analyzer
(Agilent E3631 or equivalent)
(Agilent E4438C or equivalent)
(Agilent E4438C or equivalent)
(Agilent E4440A or equivalent)
are required to ensure basic functionality.
EVM Test Configuration
5
TRF3711xxEVM
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