ADS1015
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TI 12-bit 4-channel I2C ADC, VSSOP-10. PGA, comparator, 3.3 ksps. The fast sibling of ADS1115. Datasheet-verified.
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markdownADS1015
Texas Instruments · 12-bit 4-channel I2C ADC · VSSOP-10
A 12-bit analog-to-digital converter with an I2C interface, in VSSOP-10, the faster, lower-resolution sibling of the 16-bit ADS1115 (same pinout and registers). It has four single-ended or two differential inputs, an on-chip programmable-gain amplifier that scales small signals down to millivolts full-scale, and an internal reference and oscillator so it needs no external support. A built-in comparator can flag threshold crossings on the ALERT/RDY pin without host polling, and it samples up to 3300 times per second. An address pin puts four on one bus. Runs 2.0-5.5 V.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADDR | input | I2C target (slave) address select. Tie to GND, VDD, SDA, or SCL to select one of four I2C addresses (0x48, 0x49, 0x4A, 0x4B). |
| 2 | ALERT/RDY | output | Comparator output or conversion-ready output. Open-drain, requires an external pullup resistor to VDD. Signals over/under-voltage conditions or that a new conversion result is available. |
| 3 | GND | power_in | Analog ground reference for the device. |
| 4 | AIN0 | input | Analog input 0. Selectable as single-ended input or as the positive input of a differential pair. Absolute input range GND to VDD. |
| 5 | AIN1 | input | Analog input 1. Selectable as single-ended input or as the negative input of a differential pair with AIN0. Absolute input range GND to VDD. |
| 6 | AIN2 | input | Analog input 2 (ADS1015 only). Selectable as single-ended input or as the positive input of a differential pair with AIN3. Absolute input range GND to VDD. |
| 7 | AIN3 | input | Analog input 3 (ADS1015 only). Selectable as single-ended input or as the negative input of a differential pair with AIN2. Absolute input range GND to VDD. |
| 8 | VDD | power_in | Power-supply input, 2.0 V to 5.5 V. Bypass with a 0.1 µF decoupling capacitor to GND placed close to the pin. |
| 9 | SDA | bidirectional | I2C serial data input/output. Open-drain; requires an external pullup resistor to VDD. |
| 10 | SCL | input | I2C serial clock input. Requires an external pullup resistor to VDD. |
Key specifications
| Parameter | Value |
|---|---|
| Type | 4-channel SAR ADC |
| Resolution | 12-bit |
| Inputs | 4 single-ended or 2 differential |
| PGA | yes (±0.256 to ±6.144 V FS) |
| Sample rate | up to 3300 sps |
| Interface | I2C + ALERT/RDY |
| Supply voltage | 2.0-5.5 V |
| Package | VSSOP-10 |
Ordering variants
ADS1015IDGSR (VSSOP-10)ADS1015IDGST (VSSOP-10, small reel)
CAD (KiCad official)
- Symbol:
Analog_ADC:ADS1015IDGS - Footprint:
Package_SO:TSSOP-10_3x3mm_P0.5mm - 3D model: TSSOP-10 / VSSOP-10 (KiCad packages3D)
- 3D model files:
ads1015-etched.step/ads1015-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ads1015.step/ads1015.glbare the bare package body.
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).