Texas Instruments TRF1500 - Manual (Page 5)

Contents
Abstract ......................................................................................................................... 9
Product Support ......................................................................................................... 10
The TI Advantage Extends Beyond RF to Every Other Major Wireless System
Block....................................................................................................................... 10
Related Documentation........................................................................................... 11
World Wide Web ..................................................................................................... 11
Email....................................................................................................................... 11
Introduction................................................................................................................. 12
Design Considerations ............................................................................................... 13
External Components.............................................................................................. 13
Board Design and Impedance Matching.................................................................. 13
TRF 1500 Dual-Band Receiver ................................................................................... 14
TRF1500 Control State ............................................................................................... 17
Low Band Cascaded Receiver Section: LNA, External SAW Filter, Mixer, and LO
Buffer Amplifier........................................................................................................... 18
Low-Band LNA........................................................................................................ 19
Low-Band LNA Turn on Time .................................................................................. 19
Low-Band LNA Input ............................................................................................... 20
Low-Band LNA Output ............................................................................................ 20
Surface Acoustic Wave (SAW) Filter....................................................................... 21
Low-Band Mixer ...................................................................................................... 22
Low-Band Mixer RF Input ....................................................................................... 22
Low-Band Mixer LO Input ....................................................................................... 23
Low-Band IF Output ................................................................................................ 23
Low-Band LO Buffer Amplifier Output ..................................................................... 24
Low-Band Cascaded Test Guide ............................................................................... 26
LOW-Band Cascaded: Power Conversion Gain ...................................................... 26
Low-Band Cascaded: Power Conversion Gain Reduction....................................... 27
Low-Band Cascaded: Noise Figure......................................................................... 28
Low-Band Cascaded: RF Input Return Loss ........................................................... 30
Low-Band Cascaded: LO Input Return Loss ........................................................... 30
LOW BAND: LO Buffer Output Power ..................................................................... 31
Low-Band: Power Leakage LO In to RF In .............................................................. 31
Low-Band Cascaded: Third Order Input Intercept Point (IIP3)................................. 32
Low-Band Cascaded: 1dB RF Input Compression Point ......................................... 33
Low-Band Cascaded: 1dB Blocking Point ............................................................... 34
High-Band Cascaded Receiver Section: LNA, Mixer, LO Buffer Amplifier ............. 35
Cascaded High-Band Receiver Section: LNA, Mixer, and LO Amplifier................... 35
High-Band RF Input ................................................................................................ 36
High-Band LO Input ................................................................................................ 36
High-Band IF Output ............................................................................................... 38
High-Band LO Buffer Amplifier Output .................................................................... 39
High-Band Cascaded Test Guide............................................................................... 40
High-Band Cascaded: Power Conversion Gain....................................................... 40