Application Note
page 22 of 32
V1.0
2021-03-31
Distance2GoL (Software-Controlled FMCW) low-power radar shield using
BGT24LTR11 for range detection and human tracking
External pin header connectors
6
External pin header connectors
The BGT24LTR11 Shield has the provision to connect multiple headers on the edge of the board. Figure 15
shows the pin headers on the PCB, and Table 7,Table 8, Table 9, Table 10, Table 11 and Table 12 describe the
pins.
8
7
6
5
4
3
2
1
8
4
2
1
6
8
7
6
4
1
6
5
3
7
9
2
3
5
3
2
1
5
4
2
3
1
1
4
5
7
8
6
3
2
10
Figure 15
External headers
–
P1, P2, P3, P4, P5 and P6
Table 7
External headers (P1)
–
pin description
Pin no.
Signal name
Pin description
1
VCC_PTAT
Control signal for VCC_PTAT pin (pin 16) of MMIC
2
TX_EN
Control signal for TX_EN pin (pin 5) of MMIC
3
VCC_BGT_EN
Control signal for PMOS switch (Q1) to turn MMIC on/off
4
GND
Ground
5
IFI.I1 (IFI_HG)
Second baseband amplifier stage output for IFI signal
6
IFI.Q1 (IFQ_HG)
Second baseband amplifier stage output for IFQ signal