ADS1015 — i2c address & wiring
12-bit, 3.3 kSPS sibling of the ADS1115 — less resolution, much faster.
Key facts
ADS1015 at a glance
| i2c address | 0x480x490x4A0x4B address-selectable via pins/jumpers |
|---|---|
| Logic voltage | 2–5.5 V |
| Type | adc |
| Part | TI ADS1015 |
| Ships with | Qwiic, STEMMA QT |
| Datasheet | TI ADS1015 — manufacturer documentation ↗ |
The chip
What the TI ADS1015 actually is
12-bit delta-sigma analog-to-digital converter with four multiplexed single-ended or two differential inputs, a programmable gain amplifier (PGA), programmable comparator and an i2c interface. Data rates up to 3300 samples per second — faster conversions than the ADS1115 at reduced resolution.
Wiring
How to connect the ADS1015
The ADS1015 talks i2c at address 0x48 (up to 4 selectable addresses, handy when you need more than one on the same bus). It runs at 2–5.5 V, so match your host's logic level — if your host is 5 V and a board on the bus is 3.3 V-only, add a level shifter. Use the compatibility checker to confirm the exact cable for your setup.
Because the address is selectable, you can run several ADS1015 boards on one bus by setting each to a different address — no extra wiring beyond the shared SDA/SCL.
Wiring is the usual four: power, ground, SDA and SCL, plus pull-up resistors — almost always already fitted on the breakout. Nothing showing up? Run an i2c scan first; if the bus is silent, the 7-step checklist finds it faster than guessing.
Ecosystems
Plug-together options for the ADS1015
ADS1015 breakouts ship with Qwiic and STEMMA QT — keyed 4-pin cables carrying power, ground, SDA and SCL, so there's nothing to solder and nothing to wire backwards. Chain it to the next board and keep going.
Running a mixed bench? Those ecosystems interoperate more than their marketing suggests — see every connector pairing for the cable or adapter you need, or the standards overview for how they compare.
Go deeper
Guides covering the ADS1015
Alternatives
Other adc boards
Watch the bus
Boards that clash with the ADS1015
These want addresses the ADS1015 also answers (0x48, 0x49, 0x4A, 0x4B), so they can't share a bus with it untouched. If one is address-selectable, strap it elsewhere; if not, the conflict guide covers the multiplexer and second-bus routes, and the collision roundup explains why a scan won't warn you.
Get one
Questions
ADS1015 i2c FAQ
What is the ADS1015's i2c address?
The ADS1015 uses 0x48 or 0x49 or 0x4A or 0x4B, selected with an address pin or solder jumper on the board. If a scan turns up something unexpected, our i2c address list names the usual suspect for every address.
What voltage does the ADS1015 run at?
2–5.5 V logic. That range covers both 3.3 V and 5 V hosts, so it drops onto a Pi, ESP32 or Arduino without a level shifter.
Can I use two ADS1015s on one i2c bus?
Yes — set each one to a different address (0x48, 0x49, 0x4A, 0x4B) using its address pin or jumper, then wire both to the same SDA/SCL. That gives you up to 4 on a single bus before you need a multiplexer.
Does the ADS1015 work with Qwiic and STEMMA QT?
Yes — ADS1015 breakouts ship with Qwiic / STEMMA QT, so it plugs straight in with no soldering. Mixing ecosystems? The compatibility checker gives you the exact cable or adapter.