AWR1843: AWR1843 power supply

Hello,

There are many more supply pins on the radar. In total the device has four different supplies (3.3V digital, 1.8V digital and analog, 1.2V digital, 1.0V RF). Please review the hardware design checklist and device datasheet to understand the different pins on the radar.

https://www.ti.com/lit/zip/spracl2 

https://www.ti.com/lit/gpn/awr1843

Regards,

Adrian

Hi,

The lines below from the datasheet show the role and pins for each of the voltage rails...

You would need to provide all of these voltage rails to produce a working design. 

The easiest place to start might be to look at how it is done on one of the TI Evaluation Boards, such as this one:

https://www.ti.com/tool/AWR1843BOOST

Hope this helps...

-Chris

VDDIN Power 1.2V digital power supply H15, N11, P15, R6

VIN_SRAM Power 1.2V power rail for internal SRAM G15

VNWA Power 1.2V power rail for SRAM array back bias P14

VIOIN Power I/O Supply (3.3V or 1.8V): All CMOS I/Os would operate on this supply R10, F15

VIOIN_18 Power 1.8V supply for CMOS IO R9

VIN_18CLK Power 1.8V supply for clock module B11

VIOIN_18DIFF Power 1.8V supply for LVDS port D15

VPP Power Voltage supply for fuse chain L13

VIN_13RF1 Power 1.3V Analog and RF supply,VIN_13RF1 and VIN_13RF2 could be shorted on the board G5, H5, J5

VIN_13RF2 Power 1.3V Analog and RF supply C2,D2

VIN_18BB Power 1.8V Analog base band power supply K5, F5

VIN_18VCO Power 1.8V RF VCO supply B12

VSS Ground Digital ground L5, L6, L8, L10, K7, K8, K9, K10, K11, J6, J7, J8, J10, H7, H9, H11, G6, G7, G8, G10, F9, F11, E5, E6, E8, E10, E11, R15

VSSA Ground Analog ground A1, A3, A5, A7, A15, B1, B3, B5, B7, C1, C3, C4, C5, C6, C7, E1, E2, E3, F3, G1, G2, G3, H3, J1, J2, J3, K3, L1, L2, L3, M3, N1, N2, N3, R1, A13, C8,A9, B9, C9, B14, C14

Hello,

No, L13 is not required for general purpose devices. This is only needed for secure variants which you would not be using.

ALL other supply pins are required for device operation. 

Regards,

Adrian

OK, Thank you!