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ADS1013 12-Bit I2C ADC

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by Ray

12-bit delta-sigma I2C ADC with an on-chip reference and oscillator, tiny footprint.

adcdelta-sigma12-biti2ctivssop-10
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ADS1013

Texas Instruments · Analog-to-Digital Converter · VSSOP-10

The ADS1013 is a 12-bit delta-sigma analog-to-digital converter with an I2C interface, an internal reference, and an on-chip oscillator. It digitizes a single differential input at up to 3.3 ksps with a programmable full-scale range, providing simple precision measurement in a compact VSSOP-10. It is the base member of the ADS101x family.

Pinout

Pin Name Type Function
1 ADDR input I2C target address select input. Four selectable addresses are chosen by tying ADDR to GND, VDD, SDA, or SCL.
2 NC unconnected No connect on the ADS1013. Leave floating or tie to GND. (On ADS1014/ADS1015 this pin is ALERT/RDY.)
3 GND power_in Analog ground reference for the supply and analog inputs.
4 AIN0 input Analog input 0. Serves as the positive differential input (AINP) or single-ended input for the 12-bit delta-sigma ADC. Absolute input range GND to VDD; FSR up to ±6.144 V (limited by VDD + 0.3 V).
5 AIN1 input Analog input 1. Serves as the negative differential input (AINN) paired with AIN0, or as a single-ended input referenced to GND.
6 NC unconnected No connect on the ADS1013. Leave floating or tie to GND. (On ADS1015 this pin is AIN2.)
7 NC unconnected No connect on the ADS1013. Leave floating or tie to GND. (On ADS1015 this pin is AIN3.)
8 VDD power_in Analog power supply, 2.0 V to 5.5 V. Connect a 0.1 µF power-supply decoupling capacitor to GND.
9 SDA bidirectional I2C serial data input/output (open-drain). Connect to VDD through a pullup resistor. Digital input high 0.7·VDD min, low 0.3·VDD max; VOL 0.4 V at IOL = 3 mA.
10 SCL input I2C serial clock input. Connect to VDD through a pullup resistor. Supports fast mode up to 400 kHz and high-speed mode up to 3.4 MHz.

Key specifications

Parameter Value
Resolution 12-bit
Architecture Delta-sigma
Inputs 1 differential
Data rate Up to 3300 sps
Reference Internal
Interface I2C
Supply voltage 2.0 V to 5.5 V
Operating temperature -40 C to 125 C

Ordering variants

  • ADS1013IDGSR
  • ADS1013IDGST
  • ADS1013IRUGR
  • ADS1013IRUGT
  • ADS1013IDYNR
  • ADS1013IDYNT

CAD (KiCad official)

  • Symbol: ads1013.kicad_sym
  • Footprint: ads1013.kicad_mod
  • 3D model: VSSOP-10 body from KiCad Package_SO/TSSOP-10_3x3mm_P0.5mm.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (50 pp, sha256 a5cb3720275767b1, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF