A121-001-T&R

A121 – Pulsed Coherent Radar (PCR) Datasheet v1.1 A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 A121 Overview The A121 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 package of 29 mm2. The A121 60 GHz radar system is optimized for high precision and ultra-low power, delivered as a one package solution with integrated Baseband, RF front-end, and antenna. This will enable easy integration into any portable battery driven device. Features • The A121 is based on leading-edge patented pulsed coherent radar technology with picosecond time resolution. The sensor can measure up to 20 meters and the actual measurable distance is dependent on object size, shape, and dielectric properties. The A121 60 GHz radar remains uncompromised by any natural source of interference, such as noise, dust, color and direct or indirect light. • Applications • • • • • • • High precision distance measurements with mm accuracy and high update rate Proximity detection with high accuracy and the possibility to define multiple proximity zones Motion detection and velocity measurement Material detection and classification High precision object tracking, enabling robot navigation Gesture control Monitoring of vital life signs such as breathing and pulse rate © 2023 Copyright by Acconeer 2023-05-30 Accurate distance ranging and movements - Measures absolute range up to 20 m o Absolute accuracy in mm o Relative accuracy in µm - Possible to recognize movement and gestures for several objects - Support continuous and single sweep mode - HPBW typical of 65 (H-plane) and 53 degrees (E-plane) Easy integration 60 GHz Pulsed Coherent Radar (PCR) - Integrated Baseband, RF front-end, and Antenna in Package - 5.5 x 5.2 x 0.88 mm fcCSP, 0.5 mm pitch - Can be integrated behind plastic or glass without any need for a physical aperture - Single reflowable component - 1.8 V single power supply, enable with Power on Reset (PoR) - 1.8 V or 3.3 V IO interface power supply - Clock input for crystal 24 MHz. - SPI interface for data transfer, up to 50 MHz SPI clock support - INTERRUPT support Page 2 of 29 A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 Table of Contents 1 Revision History ........................................................................................................................... 4 2 Description .................................................................................................................................... 5 2.1 Functional Block Diagram...................................................................................................... 6 3 Pin Configuration and Functions ............................................................................................... 7 4 Specifications ............................................................................................................................... 9 5 4.1 Absolute Maximum Ratings ................................................................................................... 9 4.2 Environmental Sensitivity ...................................................................................................... 9 4.3 Recommended Operating Conditions ................................................................................... 10 4.4 Electrical Specification ......................................................................................................... 10 4.5 Current Consumption ........................................................................................................... 11 4.6 RF Specification ................................................................................................................... 12 4.7 Distance Accuracy ................................................................................................................ 12 4.8 Distance Resolution .............................................................................................................. 13 4.9 Absolute RLG ...................................................................................................................... 14 4.10 A121 Temperature Sensor .................................................................................................... 14 Timing Requirements ................................................................................................................ 15 5.1 6 Serial Peripheral Interface .................................................................................................... 15 Hardware integration ................................................................................................................. 17 6.1 Bill of Materials (BOM) ....................................................................................................... 18 6.2 XTAL ................................................................................................................................... 18 6.3 Sensor startup ....................................................................................................................... 19 6.4 Layout Recommendations .................................................................................................... 19 6.5 VDIG power Supply ............................................................................................................. 20 7 Software ....................................................................................................................................... 21 8 Regulatory Approval .................................................................................................................. 22 8.1 ETSI ..................................................................................................................................... 22 8.1.1 8.2 9 EU type examination certificate.................................................................................... 23 FCC ...................................................................................................................................... 24 Mechanical Data ........................................................................................................................ 25 9.1 Moisture Sensitivity Level and Recommended Reflow Profile ............................................ 27 9.2 RoHS and REACH Statement .............................................................................................. 27 10 Abbreviations.............................................................................................................................. 28 Disclaimer ........................................................................................................................................... 29 Page 3 of 29 2023-05-30 © 2023 Copyright by Acconeer A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 1 Revision History Revision Comment v0.1 Preliminary revision. v0.2 Table 4.6 updated. v0.3 Table 4.1, 4.3, 4.6, 7.1 updated. v0.4 Characterization data added: Ch 4.5, 4.7, 4.8, 4.10, 4.11 ETSI Regulatory approval added: Ch 8.1 v1.0 Released version. v1.1 Updated chapter 6.2 XTAL (corrected typo 0.3 to 0.58, corrected reference to crystal capacitors) © 2023 Copyright by Acconeer 2023-05-30 Page 4 of 29 A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 2 Description Note that explanations of definitions can be found at docs.acconeer.com/handbook. The A121 is an optimized low-power, high-precision, 60 GHz radar sensor with integrated Baseband, RF front-end, and Antenna in Package (AiP). The sensor is based on pulsed coherent radar (PCR) technology, featuring a leading-edge patented solution with picosecond time resolution. The A121 is the perfect choice for implementing highaccuracy, high-resolution sensing systems with low power consumption. Ordering information Part number Package Size (nom) Primary component container A121-001-T&R fcCSP50 5.2 x 5.5 x 0.88 mm Tape & reel A121-001-TY fcCSP50 5.2 x 5.5 x 0.88 mm 13” Tray Acconeer A121 marking Page 5 of 29 2023-05-30 © 2023 Copyright by Acconeer A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 2.1 Functional Block Diagram A121 One Package Solution A121 Silicon Digital mmWave Radio Communication SPI (4) INTERRUPT XIN XOUT CTRL (optional) Program memory TX Rx ant. RX Data memory Power 1.8V Single power supply. 1.8V or 3.3V IO power supply. Timing LDOs ENABLE Tx ant. PLL PoR Figure 2.1 The A121 functional block diagram. The A121 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. The PoR block generates a Reset signal on each power-up cycle. To operate the A121, an external host CPU such as a microcontroller (MCU) is required. The host application interfaces the Power functional block of the sensor via 1.8 V Single power supply, 1.8 V or 3.3 V IO power supply and ENABLE. The Digital functional block includes sensor control and the data memory stores the radar sweep data. The external host CPU interfaces the A121 via an SPI interface, INTERRUPT signal and optional CTRL signal. The SPI, INTERRUPT, CTRL and ENABLE interfaces support 1.8 V or 3.3 V IO voltage levels. The Timing block includes the timing circuitry. The PLL digital clock output is used to drive internal digital logic and is generated by a crystal oscillator that requires an external crystal (XIN/XOUT). Supported frequency of the external crystal is 24 MHz. The mmWave radio functional block generates and receives radar pulses and includes transmitter (TX), receiver (RX) and interfaces toward the antennas in package. The A121 operates in the 57-64 GHz band. © 2023 Copyright by Acconeer 2023-05-30 Page 6 of 29 A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 3 Pin Configuration and Functions The below figure shows the A121 pin configuration, top view: 1 A B 2 3 4 5 6 7 8 Analog0 9 CTRL Analog1 C GPIO3 VRX D VTX VRX E F 10 GPIO1 GND VTX Supply PLL_RF _TEST I/O ENABLE CLK G Analog H GPIO2 J RESET_N K XOUT SPI_SS SPI_CLK VDIG SPI_MISO GPIO4 SPI_MOSI XIN VIO INTERRUPT Figure 3.1. Pin configuration of the A121 sensor, top view. Table 1 shows A121 pin functions. Pin Pin name Pin type Description Comment A3-A8, B2, B9, C1, C10, D2, D9, E1, E2, E9, F2, F9, G1, G10, H2, H9, J3, J5, J6, J8, K4, K7 GND Ground Must be connected to solid ground plane A2 Analog0 Analog Not connected or ground. Ground recommended for optimized ground plane. A9 CTRL I/O For future use. Connect to ground B1 Analog1 Analog Not connected or ground. Ground recommended for optimized ground plane. B10 GPIO3 I/O For future use. Connect to ground C2, D1 VRX Supply voltage Supply voltage, RF part C9, D10 VTX Supply voltage Supply voltage, RF part Page 7 of 29 2023-05-30 © 2023 Copyright by Acconeer A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 Pin Pin name Pin type Description E10 PLL_RF_TEST Analog Must be connected to solid ground plane F1 GPIO1 I/O For future use. Connect to ground F10 ENABLE I/O To control OFF/ON/Hibernate/Reset Comment Recommended to be connected to host MCU GPIO. ENABLE is active high H1 GPIO2 I/O For future use. Connect to ground H10 XOUT CLK XTAL output J1 RESET_N I/O RESET_N must be connected to VIO J2 SPI_SS I/O SPI slave select, active low select. J9 VDIG Supply voltage Supply voltage, digital part J10 XIN CLK XTAL input K2 SPI_CLK I/O SPI Serial Clock K3 SPI_MISO I/O Master Input – Slave Output K5 GPIO4 I/O For future use. Connect to ground K6 SPI_MOSI I/O Master Output – Slave Input K8 INTERRUPT I/O Interrupt signal, used as an interrupt to the host. More details are found in section 7, Description. K9 VIO Supply voltage Supply voltage, digital part Mandatory Table 1. A121 sensor pin list. © 2023 Copyright by Acconeer 2023-05-30 Page 8 of 29 A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 4 Specifications 4.1 Absolute Maximum Ratings The below table shows the A121 absolute maximum ratings over operating temperature range, on package, unless otherwise noted: Parameter Description Min. Max. Unit VRX (1) 1.8 V RF power supply 0 2.0 V VTX (1) 1.8 V RF power supply 0 2.0 V VDIG 1.8 V digital power supply 0 2.0 V VIO I/O supply voltage -0.5 3.63 V TOP Operating temperature range -40 105 °C TSTG High temperature storage 150 °C Table 2. Absolute maximum ratings. (1) VRX and VTX must never exceed VDIG. Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions or at any other conditions beyond those indicated under Recommended Operating Conditions is not recommended. Exposure to absolute-maximum-rated conditions for extended periods of time may affect device reliability. 4.2 Environmental Sensitivity The below table shows the A121 environmental sensitivity: Parameter Standard Storage temperature Min Max. Unit JESD22-A103 125 ºC Reflow soldering temperature J-STD-020 260 ºC Moisture Sensitivity Level JESD22-A113 MSL3 ESD, Charge Device Model (CDM) JS-002, Class C3 1000 V ESD, Human Body Model (HBM) JS-001, Class 2 2000 V Latch-up JESD78, Class I PASS JEDEC JESD47 PASS Table 3. Environmental sensitivity. Page 9 of 29 2023-05-30 © 2023 Copyright by Acconeer A121 Pulsed Coherent Radar (PCR) Datasheet v1.1 4.3 Recommended Operating Conditions The below table shows the A121 recommended operating conditions, on package: Parameter Min. Typ. Max. Unit Operating power supply voltage, VRX 1.71 1.8 1.89 V Operating power supply voltage, VTX 1.71 1.8 1.89 V Operating power supply voltage, VDIG 1.71 1.8 1.89 V Operating power supply voltage, VIO (1.8V) 1.71 1.8 1.89 V Operating power supply voltage, VIO (3.3V) 2.97 3.3 3.45 V I/O operating range -0.3 VIO+0.3 V Operating temperature (Top) -40 105 ºC Table 4. Recommended operating conditions. 4.4 Electrical Specification The below table shows the A121 electrical DC specification conditions, on package, Top = -40ºC to 105ºC: Parameter Min. Typ. Max. Unit Current into any power supply 0 100 mA I/O VIL Low-level input voltage -0.3 0.10*VIO V I/O VIH High-level input voltage 0.90*VIO VIO+0.3 V I/O VOL Low-level output voltage 0 0.4 V I/O VOH High-level output voltage 1.6 VIO V I/O IOL (VOL = 0.4 V) 4.56 7.8 12.4 mA I/O IOH (VOH = VIO-0.4) 3.42 5.8 9.16 mA I/O IIL Low-level input current