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5.3 Schematic
Figure 5-8
shows the ADS1x48EVM schematic.
3V3
R1
10.0k
C13
100nF
R2
R7
10.0k
10.0k
U1
1
8
GND
A0
VCC
EEPROM_WE
2
7
A1
WP
SCL_LP
3
6
A2
SCL
4
5
SDA_LP
VSS
SDA
BR24G32FVT-3AGE2
GND
AVDD
R24
DNP
10.0M
R13
TC+
4.12k
C3
1000pF
C10
GND
0.01uF
C4
R16
1000pF
TC-
1
TC+
4.12k
R23
2
TC-
DNP
10.0M
3
REF5025
4
REFOUT
5
NTC+
NTC-
6
GND
J5
R21
NTC+
4.12k
C7
R14
1000pF
C12
RT1
DNP
DNP
GND
10.0k
0.01uF
C8
10k
R22
NTC-
1000pF
4.12k
R17
10.0k
GND
JP6
R10
REFP1
4.12k
C2
R11
1000pF
C5
GND
4.02k
0.01uF
C6
R12
REFN1
1000pF
4.12k
JP3
1
REFP1
2
REFN1
3
RTD_A
4
RTD_B
GND
5
RTD_C
6
R18
J6
680
R20
RTD_A
GND
4.12k
C11
C18
1000pF
0.01uF
GND
C21
R28
RTD_B
1000pF
4.12k
JP4
R29
RTD_C
680
JP5
GND
SBAU378A – SEPTEMBER 2021 – REVISED JANUARY 2022
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AVDD
1
3
R8
10.0k
JP1
3V3
J1/J3
1
+3.3V
2
Analog_In
C9
3
LP_UART_RX
10µF
4
LP_UART_TX
5
GPIO !
6
Analog In
GND
SCLK
7
SPI_CLK
EEPROM_WE
8
GPIO !
Analog_In/I2S_SCLK
SCL_LP
9
I2C_SCL
Analog_Out/I2S_SDout
SDA_LP
10
I2C_SDA
Analog_Out/I2S_SDin
SSQ-110-03-T-D
AIN4
AIN5
AIN6
AVDD
AIN7
U2A
2
6
VIN
VOUT
5
TRIM/NR
3
4
TEMP
GND
C16
C17
1µF
REF5025IDGKT
1µF
AIN1
GND
AIN0
IEXC2
AIN2
AIN3
IEXC1
Figure 5-8. ADS1x48EVM Schematic
Copyright © 2022 Texas Instruments Incorporated
5V
J2/J4
CLK_EXT
21
40
+5V
PWM/GPIO !
22
39
GND
PWM/GPIO !
C14
23
38
Analog_In
PWM/GPIO !
10µF
RESET
24
37
Analog_In
PWM/GPIO !
25
GND
36
Analog_In
Timer_Cap/GPIO !
26
35
Analog_In
Timer_Cap/GPIO !
27
GND
34
Analog_In/I2S_WS
GPIO !
28
START
33
GPIO !
29
32
GPIO !
30
DRDY
31
GPIO !
SSQ-110-03-T-D
3V3
AVDD
R6
R25
0.1
0.1
C15
C20
C22
C19
10µF
100nF
100nF
10µF
GND
GND
U3
22
AVDD
R26
C1
1.1
1
DVDD
0.01uF
DOUT/DRDY
REF5025
5
REFP0/GPIO0
C23
START
10µF
6
REFN0/GPIO1
RESET
7
REFP1
8
REFN1
VREFOUT
AIN0
11
AIN0/IEXC
VREFCOM
AIN1
12
AIN1/IEXC
AIN2
17
AIN2/IEXC/GPIO2
AIN3
18
AIN3/IEXC/GPIO3
AIN4
13
AIN4/IEXC/GPIO4
AIN5
14
AIN5/IEXC/GPIO5
AIN6
15
AIN6/IEXC/GPIO6
AIN7
16
AIN7/IEXC/GPIO7
ADS1248IPWR
Bill of Materials, Printed Circuit Board Layout, and Schematic
20
GND
19
PWM/GPIO !
18
GPIO !
GND
17
GPIO
16
RST
15
DIN
SPI_MOSI
14
DOUT_DRDY
SPI_MISO
13
SPI_CS/GPIO !
12
CS
SPI_CS/GPIO !
11
GPIO !
TP1
GND
3V3
3V3
R19
47
SCLK
28
SCLK
R30
47
DIN
R27
R9
R5
27
DIN
100k
100k
100k
25
R31
47
DRDY
DRDY
26
R32
47
DOUT_DRDY
24
R33
47
CS
CS
23
R34
47
START
4
RESET
GND
TP2
R35
47
3
CLK
REFOUT
R15
9
470k
C24
10
10µF
20
IEXC1
IEXC1
19
IEXC2
GND
IEXC2
GND
21
AVSS
2
GND
U2B
GND
REF5025IDGKT
ADS1x48EVM Evaluation Module
AVDD
3V3
D1
D2
Green
Green
R3
R4
470
390
GND
GND
CLK_EXT
JP2
2
GND
7
NC
1
DNC
8
DNC
41
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