WTR4905/WTR4605 RF Transceiver

WTR4905/WTR4605 RF Transceiver
Slide Number 2
Revision History
Slide Number 4
Introduction
WTR Devices Overview
WTR Devices Overview
RF Front-end Using the WTR4905 Device
WTR4x05 Introduction
WTR4x05 Introduction – Block Diagram
WTR4x05 Transmit and Support Blocks
WTR4x05 Receive Blocks
WTR4x05 Introduction – Features (1 of 3)
WTR4x05 Introduction – Features (2 of 3)
WTR4x05 Introduction – Features (3 of 3)
WTR4x05 Supported Air Interfaces
Supported Bands and Airlink Technologies (1 of 2)
Supported Bands and Airlink Technologies (2 of 2)
WTRx05 Introduction – Package (60 WLNSP)
WTR Device Variants
WTR4905/WTR4605 Comparisons
WTR4905 Pin Assignments
WTR4605 Pin Assignments (differences from WTR4905 are highlighted)
Chipset Support & Reference Designs
Chipset Support Matrix
Available Reference Designs
QTI Support for WTR Devices
Reference Documents
Migration from WTR1605L to WTR4905
WTR4905 versus WTR1605L
Chipset Connections
PRx Inputs Comparison
DRx Inputs Comparison
Power Supply Comparison
Packages
Keep-out Area Comparison
Example WTR1605L PCB Layout (EU + B2)
Example WTR4905 PCB Layout (Japan)
High-level Area Comparison
WTR Related System-level Topics
Topics Addressed in this Section
Software Defined RF Port Assignments
WTR4x05 Port Mapping Guidance
Reference Design Port Mapping Table (1 of 3)
Reference Design Port Mapping Table (2 of 3)
Reference Design Port Mapping Table (3 of 3)
Supported Dual-Tx RF Techniques
SVLTE (and its variations)
DSDA
Design Guidelines for Dual-Tx RF Techniques
Example Applications
WTR4905 Japan
WTR4905 NA2 CSFB
WTR4905 5-mode CMCC BOM Reduced
WTR4905/WTR2605 SGLTE/DSDA/CT-SVLTE
WTR4905 + WTR2605 VzW SVLTE/NA1
WTR3905 + WTR4605 Configurable for SVLTE VzW, CT-SVLTE/DSDA, SGLTE/DSDA
WTR3905 + WTR4605 VzW SVLTE Variant
WTR3905 + WTR4605 CT-SVLTE with Opportunistic DSDA
WTR3905 + WTR4605 CMCC SGLTE with Opportunistic DSDA
General Design Guidelines
WTR-specific General Design Guidelines
WTR-specific General Design Guidelines
Summary of Key WTR-related Design Guidelines
WTR Transmitters
WTR4x05 WAN Transmitters
WTR4x05 Tx Baseband Interface with the Modem IC
WTR4x05 RF Tx Output Ports
WTR4905 Japan Tx Ports – Schematic Example
WTR4905 Japan Tx Ports – Layout Guidelines Example
WTR Receivers
WTR4x05 WAN PRx Receivers
WTR4x05 WAN DRx Receivers
WTR4x05 TX_FBRX and GNSS Receivers
WTR4x05 Rx Baseband Interfaces with the Modem IC (1 of 3)
WTR4x05 Rx Baseband Interfaces with the Modem IC (2 of 3)
WTR4x05 Rx Baseband Interfaces with the Modem IC (3 of 3)
RF Rx Ports – WTR4x05 PRx
WTR4905 Japan PRx Input Ports – Schematic Example
WTR4905 Japan PRx Input Ports – Layout Guidelines Example (1 of 2)
WTR4905 Japan PRx Input Ports – Layout Guidelines Example (2 of 2)
RF Rx Ports – WTR4x05 DRx
WTR4905 Japan DRx Input Ports – Schematic Example
WTR4905 Japan DRx Input Ports – Layout Guidelines Example
RF Rx Ports – WTR4x05 TX_FBRX and GNSS
WTR4905 Japan TX_FBRX and GNSS RF Ports – Schematic Example
WTR4905 Japan TX_FBRX and GNSS RF Ports – Layout Example
RF Rx Ports – Comments
GSM SAW-less Overview
WTR4x05 SAW-less Configuration
WTR4x05 GSM SAW/SAW-less Design Example
Tx Feedback Receiver Overview
Feedback of the Tx RF Signal
WTR4905 TX_FBRX Overview (1 of 2)
WTR4905 TX_FBRX Overview (2 of 2)
PCB Keep-out Areas
PCB Keep-out Areas (1 of 2)
PCB Keep-out Areas (2 of 2)
WTR DC Power
General DC Power Layout Techniques (1 of 2)
General DC Power Layout Techniques (2 of 2)
WTR DC Power Supply Example (1 of 2)
WTR DC Power Supply Example (2 of 2)
WTR Ground Connections
WTR Ground Connections (1 of 2)
WTR Ground Connections (2 of 2)
WTR Support Circuits
WTR Support Circuits
19.2 MHz XO
19.2 MHz Crystal Clarification (1 of 2)
19.2 MHz Crystal Clarification (2 of 2)
WTR Digital Status and Control
RF Layout Techniques (General)
General RF Layout Techniques (1 of 3)
General RF Layout Techniques (2 of 3)
General RF Layout Techniques (3 of 3)
RF Front-end Guidance
General Design Considerations
General Design Guidelines for RF Front-ends
Transmit Bandpass Filters (1 of 2)
Transmit Bandpass Filters (2 of 2)
PA Thermistors
PA Power Management
RF Top-level Parts Placement (1 of 2)
RF Top-level Parts Placement (2 of 2)
WTR4905 Japan RF Top-level Parts Placement Example
Shielding Recommendations
Key RF Component Recommendations
Tx Feedback Receiver Design Considerations
TX_FBRX Design Considerations
B41 Design Considerations
Design Considerations for B41
B28 Design Considerations
Design Considerations for B28
Thank You