Texas Instruments ADS1285EVM-PDK, Руководство пользователя, Страница: 7 / 40

Analog inputs
DAC_SWOUTP
DAC_SWOUTN
Connects to 'DC127_DAC' page
This input is reserved
for the DAC1282
+VINP1
-VINN1
+VINP2
-VINN2
GND
VOCM
+VINP1
-VINN1
Vocm
Vocm
Connects to 'DC127_ADC' page
AIN1P
AIN1N
AIN2P
AIN2N
Connects to 'DC127_ADC' page
+VINP2
-VINN2
GND
Vocm
C0G/NP0
1000pF
C29
C0G/NP0
1000pF
C31
C0G/NP0
1000pF
C32
C0G/NP0
1000pF
C34
1
2
J14
0
R56
0
R58
22.6k
R45
22.6k
R46
22.6k
R51
22.6k
R52
1
2
3
J12
GND
1
2
3
J13
GND
NP0
1nF
C30
NP0
1nF
C33
20
R50
20
R54
0
R55
0
R59
VOUTN_SWINN
VOUTP_SWINP
20
R48
20
R47
20
R43
20
R44
20
R49
20
R53
Place differential RC filter
stages close to ADC input pins
Recommended input protection:
TPD4E1B06DCKR
Figure 3-1. Input Terminal Blocks and Headers (Schematic)
Table 3-1. Analog Input Terminal Blocks (J12, J13)
Terminal Block Pin Function ADS1285 Input Pin(s)
J12
1 Channel 1 positive input
+VINP1
(Eventually leading to AIN1P)
2 GND AGND and DGND
3 Channel 1 negative input –VINN1
(Eventually leading to AIN1N)
J13
1 Channel 2 positive input
+VINP2
(Eventually leading to AIN2P)
2 GND AGND and DGND
3 Channel 2 negative input
–VINN2
(Eventually leading to AIN2N)
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SBAU394A – APRIL 2022 – REVISED SEPTEMBER 2022
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ADS1285EVM-PDK Evaluation Module 7
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