Texas Instruments TRF1500 User Manual
Page 7
Figures
Figure 1.
TRF1500 Dual-Band Receiver Block Diagram ................................................ 14
Figure 2.
Cascaded Block Diagram of the Low-Band Receiver Section ......................... 18
Figure 3.
Voltage Divider at Low-Band LNA Input .......................................................... 19
Figure 4. Low-Band LNA Input Configuration ................................................................... 20
Figure 5. Low-Band LNA Output Configuration................................................................. 21
Figure 6. SAW Filter Insertion Loss .................................................................................. 21
Figure 7. Low-Band Mixer RF Input Configuration ............................................................ 22
Figure 8. Low-Band Mixer LO Input Configuration ............................................................ 23
Figure 9. Low-Band IF Output Configuration .................................................................... 24
Figure 10. Low-Band Buffer Amplifier Output Configuration ............................................. 25
Figure 11. Block Diagram of the High-Band Receiver Section .......................................... 35
Figure 12. High-Band RF Input Configuration................................................................... 36
Figure 13. High-Band LO Frequency Doubler Driven Configuration ................................. 37
Figure 14. High-Band LO Directly Driven Configuration.................................................... 37
Figure 15. High-Band IF Output Configuration.................................................................. 38
Figure 16. High-Band LO Buffer Amplifier Output Configuration ....................................... 39
Figure 17. Transmit Mixer Block Diagram......................................................................... 50
Figure 18. Low- and High-Band Transmit Mixer RF Input Configuration ........................... 51
Figure 19. Low- and High-Band Transmit Mixer IF Output Configuration.......................... 51
Figure 20. Test Bench Setup: Power Conversion Gain, Power Conversion Gain
Reduction, 1dB RF Input Compression Point, Second Order Input Intercept
Point (IIP2), 2x2 Spur Performance, 3x3 Spur Performance, Image rejection
and LO Buffer Output Power ........................................................................... 72
Figure 21. Test Bench Setup: Third Order Input Intercept Point (IIP3), 1dB Blocking
Point Measurements ....................................................................................... 72
Figure 22. Test Bench Setup: Noise Figure ..................................................................... 73
Figure 23. Test Bench Setup: Power Leakage LO In to RF In ......................................... 73
Figure 24. Test Bench Setup: Power Leakage RF In to LO In Measurements ................. 74
Figure 25. Test Bench Setup: LNA Noise Figure Measurements..................................... 74
Figure 26. Test Bench Setup: LNA Third Order Input Intercept Point (IIP3) Measurement75
Figure 27. Test Bench Setup: LNA 1dB Input Compression Point ................................... 75
Tables
Table 1. Pin Descriptions................................................................................................. 15
Table 2. Control State and the Corresponding Active Circuits ......................................... 17
Table 3. LB LNA, LB Mixer, SAW Filter, and LB IF Amp Parameters............................... 26
Table 4. HB LNA, HB mixer, HB IF amp .......................................................................... 40
Table 5. Low-Band Transmit Performance Parameters ................................................... 52
Table 6. High-Band Transmit Mixer Performance Parameters......................................... 59
Table 7. Low-Band LNA Parameters ............................................................................... 60
Table 8. Low-Band Receiver Mixer Parameters .............................................................. 65