Pin Grouping by Function

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Grouped and verified all 16 ADS1120 pins:
  • Power: AVDD, DVDD
  • Ground: AVSS, DGND
  • Analog Inputs: AIN0–AIN3
  • Reference: REFP0, REFN0
  • SPI: SCLK, DIN, DOUT/~DRDY, ~CS
  • Control: CLK, ~DRDY
Power pins are oriented top, grounds bottom, analog pins left, and digital pins right. Pin numbers and mappings remain unchanged.
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adrian95

Assign a Terminal Order from 1 to 10, starting with Power. Power should be Terminal Order 1, and Ground should be last, Terminal Order 10. For Orientation, set Power to "Top" and Ground to "Bottom." For the remaining sections/groups, you may decide the Terminal Order and Orientation yourself. For Orientation, distribute them between "Left" and "Right" — don't put everything on one side. Each group/section should have a different orientation.

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I’ll apply a global 1–10 ordering by functional group: Power first at 1 and Ground last at 10, with the remaining groups spaced between them. I’ll alternate the non-power groups between Left and Right so adjacent groups do not share the same orientation.

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Updated and verified all terminal groups:
  • 1 — Supply: Top
  • 2 — Analog Inputs: Left
  • 4 — Reference: Right
  • 6 — Clock: Left
  • 7 — SPI: Right
  • 9 — Data Ready: Left
  • 10 — Ground: Bottom
All 16 pins retain their original names, numbers, and mappings.
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Pins

Symbol

Layout

3D View

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
SCLK
1
Unspecified
Digital Interface
SPI
Right
7
~CS
2
Unspecified
Digital Interface
SPI
Right
7
CLK
3
Unspecified
Digital Interface
Clock
Left
6
DGND
4
Unspecified
Power
Ground
Bottom
10
AVSS
5
Unspecified
Power
Ground
Bottom
10
AIN3/REFN1
6
Unspecified
Analog
Analog Inputs
Left
2
AIN2
7
Unspecified
Analog
Analog Inputs
Left
2
REFN0
8
Unspecified
Analog
Reference
Right
4
REFP0
9
Unspecified
Analog
Reference
Right
4
AIN1
10
Unspecified
Analog
Analog Inputs
Left
2
AIN0/REFP1
11
Unspecified
Analog
Analog Inputs
Left
2
AVDD
12
Unspecified
Power
Supply
Top
1
DVDD
13
Unspecified
Power
Supply
Top
1
~DRDY
14
Unspecified
Digital Interface
Data Ready
Left
9
DOUT/~DRDY
15
Unspecified
Digital Interface
SPI
Right
7
DIN
16
Unspecified
Digital Interface
SPI
Right
7

ADS1120IPWR