Table 8 External Headers (P2) - Pin Description; Table 9 External Headers (P3) - Pin Description; Table 10 External Headers (P4) - Pin Description; Table 11 External Headers (P5) - Pin Description - Infineon BGT24LTR11 Manual

Distance2GoL (Software-Controlled FMCW) low-power radar shield using
BGT24LTR11 for range detection and human tracking
External pin header connectors
Pin no. Signal name
7 IF_S&H_EN
8 VCC_DIV_EN
Table 8 External headers (P2) – pin description
Pin no. Signal name
1 SCL
2 SDA
3 AREF
4 Ground
7 ARD_PWM_
8 ARD_PWM_
9 ARD_PWM_
Table 9 External headers (P3) – pin description
Pin no. Signal name
2 IOREF
4 3V3
5 5V
6 Ground
7 Ground
Table 10 External headers (P4) – pin description
Pin no. Signal name
2 ARD_PWM_
3 ARD_PWM
5 ARD_PWM_
Table 11 External headers (P5) – pin description
Pin no. Signal name
1 ARD_ADC_0
2 ARD_ADC_1
3 ARD_ADC_2
4 ARD_ADC_3
5 ARD_ADC_4
Application Note
Pin description
Control signal for IF S&H switches (U2 and U3)
Control signal for PMOS switch (Q2) to turn MMIC's divider on/off
Pin description
(I2C_EEPROM.SCL) serial clock input of the EEPROM
(I2C_EEPROM.SDA) serial data pin of the EEPROM
3.3 V power supply to Arduino
Ground
ARD_BB1_EN: control signal to turn on/off the first stage of
baseband amplification
ARD_V_PTAT_S&H_EN: control signal for V_PTAT
ARD_IF_S&H_EN: control signal for S&H switches for IFI and IFQ
Pin description
Reference signal
3.3 V power supply to Arduino
5 V power supply to Arduino
Ground
Ground
Pin description
ARD_VCC_PTAT: control signal to turn PTAT on/off
ARD_TX_EN: control signal for turning the TX of BGT24LTR11
on/off
ARD_VCC_BGT_EN: control signal for turning the BGT24LTR11
on/off (via Q1 PMOS)
Pin description
IFI_HG signal from the second baseband stage. Place R94 (0 Ω)
and remove R93 to see IFI_LG signal from the first baseband
stage.
IFQ_HG signal from the second baseband stage. Place R96 (0
Ω) and remove R95 to see IFQ_LG signal from the first
baseband stage.
IFI_LG signal from first baseband stage
IFQ_LG signal from first baseband stage
V_PTAT_OUT: V_PTAT signal
page 23 of 32 V1.0
2021-03-31