Integrated PCR front-end simplifies development Simplifying the hardware aspects of PCR technology implementation,
the Acconeer A111 provides a complete radar sensor that
integrates a mmWave radar front- end with an antenna-in-package (AIP) in a 5.2 x 5.5 x 0.88 millimeter (mm) flip chip chip-scale package (fcCSP) (Figure 2). Along with its mmWave radio frequency (RF) subsystem, the A111 includes a digital subsystem with dedicated memory areas for program and data for managing the mmWave radio subsystem. Separate subsystems provide phase-locked loop (PLL) timing and power management features including power-on reset (PoR) and separate low dropout (LDO)
Figure 2: The Arduino code listed above produces this output, showing the status of the SEN0140 sensors. (Image source: DFRobot)
regulators for the device’s multiple power domains.
With its picosecond scale time resolution, the device is typically capable of measuring distance with millimeter accuracy over a range of up to two meters. At the same time, its low power consumption allows developers to use it in battery-powered devices. Because of the A111 sensor’s high level of integration, developers need only a few additional components besides a host microcontroller to implement radar sensing in their designs (Figure 3). Because the A111 can
Figure 3: Because it integrates all the radio frequency and digital subsystems required for a radar front-end, the A111 enables developers to implement radar sensing with only a few additional components beyond the host microcontroller. (Image source: Acconeer)
operate without an aperture for its radar signals, developers can incorporate it in smart products without compromising existing ingress protection requirements.
The A111 functions as a conventional serial peripheral interface (SPI) device with serial data input (MOSI), serial output (MISO), clock (SPI_CLK),
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