MICROCHIP ATA8352 User Manual
MICROCHIP CONFIDENTIAL
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ATA8352 Module Application Note
Introduction
This application note describes the ATA8352 module, which provides hardware setup guidance for the ATA8352
Ultra-Wide Band (UWB) device. The ATA8352 module is available in two versions:
1. A Demo version with a 48 MHz crystal used in the Demo kit
2. A TDoA version with an external clock and sync signal used in the TDoA kit
Additionally, this document provides the following:
• Current consumption data with the current profile operating in the Prover or the Verifier mode
• Bill of Material (BOM) for the module
Note: The schematic, layout and BOM are provided in a zip folder.
© 2021 Microchip Technology Inc.
Application Note
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Table of Contents
Introduction.....................................................................................................................................................1
1. Quick References....................................................................................................................................3
1.1. Reference Documentation............................................................................................................3
1.2. Acronyms and Abbreviations........................................................................................................3
2. ATA8352 Module.....................................................................................................................................4
2.1. Schematic.....................................................................................................................................4
2.2. Layout...........................................................................................................................................5
2.3. Pin Details.................................................................................................................................... 7
2.4. Bill of Material...............................................................................................................................8
3. Current Consumption Profile.................................................................................................................10
3.1. Supply Current Profile................................................................................................................ 10
3.2. Verifier Mode Current Consumption...........................................................................................10
3.3. Prover Mode Current Consumption............................................................................................11
4. RF Spectrum......................................................................................................................................... 13
5. Document Revision History...................................................................................................................14
The Microchip Website.................................................................................................................................15
Product Change Notification Service............................................................................................................15
Customer Support........................................................................................................................................ 15
Microchip Devices Code Protection Feature................................................................................................ 15
Legal Notice................................................................................................................................................. 16
Trademarks.................................................................................................................................................. 16
Quality Management System....................................................................................................................... 17
Worldwide Sales and Service.......................................................................................................................18
© 2021 Microchip Technology Inc.
Application Note
DS00003770A-page 2
Microchip Confidential
1. Quick References
1.1 Reference Documentation
For further details, refer to the following:
1. ATA8352 User Guide V1.0
2. ATA8352 Datasheet V1.0
1.2 Acronyms and Abbreviations
Table 1-1. Acronyms and Abbreviations
Acronyms Abbreviations
ADC Analog-to-Digital Converter
ETSI European Telecommunications Standards Institute
FCC Federal Communications Commission
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Quick References
FLL Frequency Lock Loop
MCU Microcontroller Unit
PR Prover
RF Radio Frequency
SMA Sub Miniature version A
SSID Secure Session Identifier
SWD Serial Wire Debugger
TDoA Time Difference of Arrival
USB Universal Serial Bus
UWB Ultra-Wide Band
VR Verifier
XTAL External Crystal
© 2021 Microchip Technology Inc.
Application Note
DS00003770A-page 3
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2. ATA8352 Module
The ATA8352 Module includes the following components to set up a UWB system, controlled by an external MCU
host using an SPI connection (see the following figure):
• ATA8352 Module UWB transceiver device
• 48 MHz crystal for Demo version or external clock supply for TDoA version
• SMA connector for a UWB antenna
The version V1.1 of the module does not include the following:
• UWB prefilter for the 6 GHz to 8.2 GHz band
• Integrated UWB antenna for the 6 GHz to 8.2 GHz band (Replacing the SMA connector)
Figure 2-1. ATA8352 Module (without SMA Connector)
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ATA8352 Module
2.1 Schematic
The following figure shows the overview of a schematic for the ATA8352 module. This module includes the following
components:
1. ATA8352 UWB device with BGA 33-pin package
2. SMA connector
3. 48 MHz crystal for Demo version or external clock circuitry for TDoA version
4. A 30 to 50Ω microstrip transformation line for the RFIO pin
Some components are marked as not mounted as they are not necessary for application use.
© 2021 Microchip Technology Inc.
Application Note
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Figure 2-2. ATA8352 Module Overview Schematic
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ATA8352 Module
2.2 Layout
The following figure shows the top layer of the ATA8352 module with the routing of the RF path and GND routing of
the ATA8352 device with the blocking capacitors. The structure connection between the PCB and SMA connector
contains a 30 to 50Ω convertor. The recommended guidelines are:
1. Use the same structure and follow the GND connection, as shown in the ATA8352 device layout and the
capacitors to achieve the required sensitivity level. The layout shown in the following figure is designed in such
a way to avoid loop connections for the power and ground supplies.
© 2021 Microchip Technology Inc.
Application Note
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Microchip Confidential
Figure 2-3. ATA8352 – Top Layer and Components
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ATA8352 Module
2. Place three vias below the ATA8352 device for the GND connection.
3. Place a short and straight connection for the RF path to the SMA connector and copy the 30 to 50Ω
conversion.
The following figure illustrates the module footprint.
© 2021 Microchip Technology Inc.
Application Note
DS00003770A-page 6
Microchip Confidential
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