Library

ADS1256

24-bit 8-channel delta-sigma ADC, SPI, SSOP-28

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Search the Adom Wiki for the library component "ADS1256" (slug: ads1256) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/libraries/ads1256. Pull down the KiCad symbol, footprint, and 3D model files from the wiki page's assets. Install them into my current KiCad project and register in sym-lib-table and fp-lib-table. If the page has a datasheet URL, save that too.
Manufacturer Texas Instruments
Package SSOP-28
Pins 28 pins (Analog In, SPI, Control, Reference, Power)
Resolution 24-bit
Sample Rate 30kSPS
Channels 8 single-ended / 4 differential
Interface SPI

Library View

Interactive symbol, footprint, and 3D model — hover pins for cross-highlighting.

SymbolGenerated Generated from pin data (not in KiCad standard library)
FootprintKiCad KiCad standard library: Package_SO/TSSOP-28_4.4x9.7mm_P0.65mm
3DGenerated Generated pad visualization (Babylon.js)

Breakout Board

Auto-generated breakout molecule for ADS1256 — all pins brought to 2mm-pitch headers with 4 corner machine pins on 8mm grid.

Pricing & Availability

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DigiKey Not available
JLCPCB Not available

Specifications

Resolution24-bit
Sample Rate30kSPS
Channels8 single-ended / 4 differential
InterfaceSPI
PGA1-64x
PackageTSSOP-28

Pin Configuration

Analog InSPIControlReferencePower
PinNameGroupFunction
Analog In — Differential analog inputs
7AIN4Analog InAnalog input 4
8AIN3Analog InAnalog input 3
9AIN2Analog InAnalog input 2
10AIN1Analog InAnalog input 1
11AIN0Analog InAnalog input 0
12AVDDAnalog InAnalog supply (5V)
13AGNDAnalog InAnalog ground
14AGNDAnalog InAnalog ground
SPI — SPI communication
22DOUTSPISPI data out (MISO)
23SCLKSPISPI clock
24D0SPIDigital I/O 0
25D1SPIDigital I/O 1
Control — Data ready, reset, sync
19DRDYControlData ready (active low)
20CSControlChip select (active low)
21DINControlSPI data in (MOSI)
Reference — Voltage reference
15DGNDReferenceDigital ground
16DVDDReferenceDigital supply (1.8V-3.6V)
Power — Supply and ground
1VREFPPowerPositive reference voltage
2VREFNPowerNegative reference voltage
3AINCOMPowerAnalog input common
4AIN7PowerAnalog input 7
5AIN6PowerAnalog input 6
6AIN5PowerAnalog input 5
17RESETPowerReset (active low)
18SYNCPowerSync / power down
26D2PowerDigital I/O 2
27D3PowerDigital I/O 3
28CLKINPowerClock input (7.68MHz)

AI Skill Technical Reference

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ADS1256 — 24-bit 8-channel delta-sigma ADC, SPI, SSOP-28

Manufacturer: Texas Instruments Package: SSOP-28

Description

The ADS1256 is a 24-bit high-precision ADC from Texas Instruments with 8 single-ended or 4 differential inputs. Features programmable data rate up to 30kSPS and programmable gain amplifier. Used in precision measurement.

Electrical Specifications

  • Resolution: 24-bit
  • Sample Rate: 30kSPS
  • Channels: 8 single-ended / 4 differential
  • Interface: SPI
  • PGA: 1-64x
  • Package: TSSOP-28

Pin Configuration

Package: SSOP-28

  • Pin 1: VREFP — Positive reference voltage
  • Pin 2: VREFN — Negative reference voltage
  • Pin 3: AINCOM — Analog input common
  • Pin 4: AIN7 — Analog input 7
  • Pin 5: AIN6 — Analog input 6
  • Pin 6: AIN5 — Analog input 5
  • Pin 7: AIN4 — Analog input 4
  • Pin 8: AIN3 — Analog input 3
  • Pin 9: AIN2 — Analog input 2
  • Pin 10: AIN1 — Analog input 1
  • Pin 11: AIN0 — Analog input 0
  • Pin 12: AVDD — Analog supply (5V)
  • Pin 13: AGND — Analog ground
  • Pin 14: AGND — Analog ground
  • Pin 15: DGND — Digital ground
  • Pin 16: DVDD — Digital supply (1.8V-3.6V)
  • Pin 17: RESET — Reset (active low)
  • Pin 18: SYNC — Sync / power down
  • Pin 19: DRDY — Data ready (active low)
  • Pin 20: CS — Chip select (active low)
  • Pin 21: DIN — SPI data in (MOSI)
  • Pin 22: DOUT — SPI data out (MISO)
  • Pin 23: SCLK — SPI clock
  • Pin 24: D0 — Digital I/O 0
  • Pin 25: D1 — Digital I/O 1
  • Pin 26: D2 — Digital I/O 2
  • Pin 27: D3 — Digital I/O 3
  • Pin 28: CLKIN — Clock input (7.68MHz)

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0 revisions · Updated 2026-03-02 17:31:36