A121 Pulsed Coherent Radar (PCR)

Datasheet v1.0

Page 17 of 29

2023-03-30

© 2023 Copyright by Acconeer

6

Hardware integration

The A121 sensor can be configured for a 3.3 V or 1.8 V host interface as shown in Figure 6.1 and

Figure 6.2.

A121

INTERRUPT

SPI_SS

SPI_MISO

SPI_MOSI

SPI_CLK

ENABLE

VRX

VTX

VDIG

RESET_N

XIN

XOUT

1.8 V

X1

C6

C5

C2

C3

Host

(3.3 V)

C1

C4

VIO

3.3 V

Figure 6.1. Recommended integration of the A121 radar sensor for 3.3 V host interface.

A121

INTERRUPT

SPI_SS

SPI_MISO

SPI_MOSI

SPI_CLK

ENABLE

VRX

VTX

VDIG

RESET_N

XIN

XOUT

1.8 V

X1

C6

C5

C2

C3

Host

(1.8 V)

C1

VIO

Figure 6.2 Recommended integration of the A121 radar sensor for 1.8 V host interface.