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Acconeer A111 Datasheet

Pulsed coherent radar pcr
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A111 – Pulsed Coherent Radar (PCR)
Datasheet v1.8

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Summary of Contents for Acconeer A111

  • Page 1 A111 – Pulsed Coherent Radar (PCR) Datasheet v1.8...
  • Page 2 A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 A111 Overview The A111 is a radar system based on pulsed coherent radar (PCR) technology and is setting a new benchmark for power consumption and distance accuracy – fully integrated in a small...

  • Page 3: Table Of Contents

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 Table of Contents Revision History ............................4 Description ..............................5 Functional Block Diagram ........................6 Pin Configuration and Functions ....................... 7 Specifications ............................... 9 Absolute Maximum Ratings ....................... 9 Environmental Sensitivity ........................9 Recommended Operating Conditions ....................

  • Page 4: Revision History

    Revision Comment V1.0 Released version V1.1 Minor reference correction in chapter 5.1. A111 marking info added in chapter 2. V1.2 Relative phase accuracy added in chapter 6.3 V1.3 Ordering information added in chapter 2. Equation corrected in XTAL chapter 8.1.

  • Page 5: Description

    Datasheet, v1.8 Description The A111 is an optimized low-power, high-precision, 60 GHz radar sensor with integrated Baseband, an RF front-end and an Antenna in Package (AIP). The sensor is based on pulsed coherent radar (PCR) technology, featuring a leading-edge patented solution with picosecond time resolution.

  • Page 6: Functional Block Diagram

    ENABLE Figure 2.1. The A111 functional block diagram. The A111 silicon is divided into four functional blocks: Power, Digital, Timing and mmWave radio. The Power functional block includes LDOs and a Power on Reset (PoR) block. Each LDO creates its own voltage domain.

  • Page 7: Pin Configuration And Functions

    SPI_SS VIO_3a SPI_CLK SPI_MISO SPI_MOSI VIO_3b INTERRUPT Figure 3.1. Pin configuration of the A111 sensor, top view. The below table shows the A111 total number of 50 pins: Pin name Pin type Description Comment Must no connect A3-A8 Ground Must be connected to solid ground plane...
  • Page 8 Supply voltage Supply voltage, digital part Table 3.1. A111 sensor pin list (1) VIO_1a and VIO_1b are short circuit inside the sensor. VIO_2a and VIO_2b are short circuit inside the sensor. VIO_3a and VIO_3b are short circuit inside the sensor.

  • Page 9: Specifications

    JS-001, Class 1C 1000 Latch-up JESD78, Class I Pass Table 4.2 Environmental sensitivity (1) For reference only. The package is generically qualified by the manufacturer. Acconeer does not guarantee adherence to standard. Page 9 of 34 2019-06-12 © 2019 Copyright by Acconeer...

  • Page 10: Recommended Operating Conditions

    Operating temperature ºC Table 4.3. Recommended operating conditions (1) XIN input must not exceed 0V when ENABLE is low. 4.4 Electrical Specification The below table shows the A111 electrical DC specification conditions, on package, at T = 25ºC: Parameter Min. Typ.

  • Page 11: Power Consumption Summary

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 The below table shows the A111 electrical AC specification conditions, on package, at T = 25ºC: Parameter Min. Typ. Max. Unit I/O output operating frequency I/O load capacitance XIN operating frequency XIN capacitance Table 4.5 Electrical AC conditions...

  • Page 12: Timing Requirements

    The Serial Peripheral Interface (SPI) is a 4-wire serial bus, used for configuration and reading output from the A111 radar sensor. The A111 radar sensor is an SPI slave device connected to the SPI master, as described in figure 5.1. The A111 allows several devices to be connected on the same SPI bus, with a dedicated slave-select signal.
  • Page 13 A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 Parameter Min. Typ. Max. Unit Clock frequency SS setup time SS hold time MOSI setup time MOSI hold time MISO propagation delay Table 5.1 SPI timing characteristics (1) The 50 MHz clock frequency requires that the reference clock is at least 20.625 MHz...

  • Page 14: Typical Characteristics

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 Typical Characteristics 6.1 Distance Accuracy Conditions: T = 25 ºC, V = 1.8 V. Statistical result based on sweep count 100, 20 tested devices. The below figure shows the standard deviation of distance estimation, configuration using envelope service with maximize depth resolution profile, 0.06-0.30 m.

  • Page 15: Amplitude Accuracy

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 6.2 Amplitude Accuracy Conditions: T = 25 ºC, V = 1.8 V. Statistical result based on sweep count 100, 20 tested devices. The below figure shows the standard deviation of amplitude estimation, configuration using envelope service with maximize depth resolution profile, 0.06-0.30 m.

  • Page 16: Half Power Beamwidth (Hpbw)

    = 25 ºC, V = 1.8 V. Statistical result based on sweep count 100 (20 tested devices). This section shows the A111 Elevation plane (E-plane) and Horizontal plane (H-plane) radiation pattern. The below figure shows the normalized radiation pattern at E-plane, configuration using envelope service with maximize depth resolution profile, with a 5 cm radius spherical metal corner reflector.

  • Page 17: Functional Description

    The Serial Peripheral Interface (SPI) is a 4-wire serial bus, used for configuration and reading output from the A111 radar sensor. The A111 radar sensor is an SPI slave device, connected to the SPI master (Host MCU), and allows several devices to be connected on same SPI bus, with a dedicated slave-select signal.

  • Page 18: Acconeer Software

    Datasheet, v1.8 7.1 Acconeer Software The Acconeer software has been written in C and is portable to any OS and HW platform. The Acconeer software is executed on Host MCU and delivered as binaries, except for integration software that is delivered as source code.

  • Page 19: Power Up Sequence

    SPI_MISO VIO_3a,b SPI_MOSI VBIAS Host SPI_CLK ENABLE XOUT Figure 7.3. Recommended integration of the A111 radar sensor. The power up sequence is shown in below figure. VIO_1-3a,b ENABLE Time Figure 7.4. Power up sequence Page 19 of 34 2019-06-12 © 2019 Copyright by Acconeer...
  • Page 20 It is advised to have the clock inactive at 0 V while ENABLE is inactive. Now the A111 radar sensor is ready for SPI communication. All I/Os must never exceed VIO_3 voltage, accordingly if VIO_3 voltage is set to 0V between sensor usage then all I/Os must also be set to 0V.

  • Page 21: Layout Recommendations

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 Layout Recommendations A111 sensor free space integration should take the following into consideration: • Any material above the sensor should have as low permittivity and loss as possible, e.g. plastic or glass with low permittivity.

  • Page 22: Bill Of Material (Bom)

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 8.1 Bill of Material (BoM) The below table shows BOM for integration of the A111: Component Value Description C1, C2, C3 100 nF VIO_1, VIO_2, VIO_3 decoupling C4, C5, C6 1 µF VIO_1, VIO_2, VIO_3 decoupling 100 kΩ...

  • Page 23: Xtal

    The input clock can origin from a crystal (XTAL), connected to XIN and XOUT. The A111 sensor has a built-in XTAL oscillator and by adding an external XTAL component, as shown in the below figure 8.1, a reference design without any external clock reference supplied is possible.

  • Page 24: External Clock Source

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 8.3 External clock source The input clock can origin from an external clock source connected to XIN, with XOUT left open. As an example given in table 8.3, maximum phase noise figures are given using 40 MHz external clock reference.

  • Page 25: Power Supply

    Datasheet, v1.8 8.4 Power supply The A111 sensor has got three power supplies where the VIO_3 power supply is sensitive to power supply ripple. Power supply ripple on VIO_3 may degrade performance since VIO_3 supplies the internal clock generation blocks. Table 8.4 provides the required power supply ripple specification for VIO_3.
  • Page 26 A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 Figure 8.3: Simulated performance with 10mV supply ripple with low cost LC supply filter. © 2019 Copyright by Acconeer 2019-06-12 Page 26 of 34...

  • Page 27: Regulatory Approval

    9.1 ETSI Hereby, Acconeer declares that the A111 sensor is compliant with directive 2014/53/EU for the following software configuration profiles: Maximize depth resolution Maximize SNR 9.1.1 EU declaration of conformity...

  • Page 28: Fcc Approval

    The A111 sensor meets the title 47 of the Code of Federal Regulations, part 15 section 15.255 for intentional radiators operating in the 57-71 GHz band for the following type of applications.

  • Page 29: Fcc Grant Authorization

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 9.2.2 FCC Grant Authorization Page 29 of 34 2019-06-12 © 2019 Copyright by Acconeer...

  • Page 30: Mechanical Data

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 10 Mechanical Data The A111 is available in fcCSP package for mounting on a substrate. The below table shows mechanical data: Parameter Min. Typ. Unit Body X 5.15 5.20 5.25 Body Y 5.45 5.50...
  • Page 31 A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 The physical layout of the A111 sensor is shown in Figure 10.2, 10.3 and 10.4. Figure 10.2. Physical layout of the A111 sensor, top view. Figure 10.3. Physical layout of the A111 sensor, side view.

  • Page 32: Recommended Reflow Profile

    C. All dimensions and tolerances conform to ASME Y14.5 – 2009. Figure 10.4. Physical layout of the A111 sensor, bottom view. The bottom view shows 50 solder balls. The pitch of the BGA balls is 500 µm, the ball diameter is 300 µm ±5 µm and the collapsed ball height is 0.244 ±...

  • Page 33: Abbreviations

    A111 Pulsed Coherent Radar (PCR) Datasheet, v1.8 11 Abbreviations Analog digital converter Antenna in package Application programming interface Ball grid array Bill of materials "Conformité Européene" (which literally means "European Conformity") CPHA Clock phase CPOL Clock polarity EIRP Equivalent isotropically radiated power...

  • Page 34: Disclaimer

    Datasheet, v1.8 Disclaimer The information herein is believed to be correct as of the date issued. Acconeer AB (“Acconeer”) will not be responsible for damages of any nature resulting from the use or reliance upon the information contained herein. Acconeer makes no warranties, expressed or implied, of merchantability or fitness for a particular purpose or course of performance or usage of trade.

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