ADS1015 12-Bit ADC - 4 Channel with Programmable Gain Amplifier - STEMMA QT / Qwiic
4-channel, 12-bit ADC with programmable gain amplifier (PGA) on an I2C breakout board. Samples at up to 3300 SPS; PGA supports input ranges from ±256mV to ±6.144V. Useful when a microcontroller lacks an ADC or when higher precision is needed.
Pinout
- VIN
Power input for the ADS1015 breakout. Adafruit states acceptable board power/logic is 2V to 5V and to use the same voltage as the host logic level.
Type · PowerVoltage · 2V to 5V - GND
Common ground for power and logic.
Type · Ground - SCL
I2C clock line. The Learn pinout states this pin has a 10K pullup to VIN.
Type · I2CVoltage · logic level follows VIN - SDA
I2C data line. The Learn pinout states this pin has a 10K pullup to VIN.
Type · I2CVoltage · logic level follows VIN - STEMMA QT
STEMMA QT / Qwiic connectors carrying I2C, power and ground for solderless connection to development boards or accessories.
Type · I2CVoltage · power follows VIN - ADDR
I2C address selection pin for ADS11x5 addressing. The base address is 0x48 and the address pin selects alternate addresses.
Type · Unknown - A0
ADC input pin for channel 0.
Type · Analog - A1
ADC input pin for channel 1.
Type · Analog - A2
ADC input pin for channel 2.
Type · Analog - A3
ADC input pin for channel 3.
Type · Analog - ALRT
Digital comparator output or conversion-ready interrupt/asynchronous read signal.
Type · GPIO - A+
ADC power supply output on the breakout, described by Adafruit as VIN through a ferrite. It is an output, not an analogue input.
Type · PowerVoltage · derived from VIN - A-
ADC analogue ground output on the breakout, described by Adafruit as digital GND through a ferrite. It is an output, not an analogue input.
Type · Ground - A0 address jumper
Back-side I2C address jumper. Closing it changes the default 0x48 address to 0x49 for this ADS1015 breakout.
Type · Unknown - LED jumper
Power LED disable jumper. Cut the trace to disable the on-board power LED.
Type · Unknown
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VIN | Power | Power input for the ADS1015 breakout. Adafruit states acceptable board power/logic is 2V to 5V and to use the same voltage as the host logic level. | 2V to 5V |
| GND | Ground | Common ground for power and logic. | |
| SCL | I2C | I2C clock line. The Learn pinout states this pin has a 10K pullup to VIN. | logic level follows VIN |
| SDA | I2C | I2C data line. The Learn pinout states this pin has a 10K pullup to VIN. | logic level follows VIN |
| STEMMA QT | I2C | STEMMA QT / Qwiic connectors carrying I2C, power and ground for solderless connection to development boards or accessories. | power follows VIN |
| ADDR | Unknown | I2C address selection pin for ADS11x5 addressing. The base address is 0x48 and the address pin selects alternate addresses. | |
| A0 | Analog | ADC input pin for channel 0. | |
| A1 | Analog | ADC input pin for channel 1. | |
| A2 | Analog | ADC input pin for channel 2. | |
| A3 | Analog | ADC input pin for channel 3. | |
| ALRT | GPIO | Digital comparator output or conversion-ready interrupt/asynchronous read signal. | |
| A+ | Power | ADC power supply output on the breakout, described by Adafruit as VIN through a ferrite. It is an output, not an analogue input. | derived from VIN |
| A- | Ground | ADC analogue ground output on the breakout, described by Adafruit as digital GND through a ferrite. It is an output, not an analogue input. | |
| A0 address jumper | Unknown | Back-side I2C address jumper. Closing it changes the default 0x48 address to 0x49 for this ADS1015 breakout. | |
| LED jumper | Unknown | Power LED disable jumper. Cut the trace to disable the on-board power LED. |
Pin details
15 connections- VIN
Power input for the ADS1015 breakout. Adafruit states acceptable board power/logic is 2V to 5V and to use the same voltage as the host logic level.
PowerVoltage · 2V to 5V - GND
Common ground for power and logic.
Ground - SCL
I2C clock line. The Learn pinout states this pin has a 10K pullup to VIN.
I2CVoltage · logic level follows VIN - SDA
I2C data line. The Learn pinout states this pin has a 10K pullup to VIN.
I2CVoltage · logic level follows VIN - STEMMA QT
STEMMA QT / Qwiic connectors carrying I2C, power and ground for solderless connection to development boards or accessories.
I2CVoltage · power follows VIN - ADDR
I2C address selection pin for ADS11x5 addressing. The base address is 0x48 and the address pin selects alternate addresses.
Unknown - A0
ADC input pin for channel 0.
Analog - A1
ADC input pin for channel 1.
Analog - A2
ADC input pin for channel 2.
Analog - A3
ADC input pin for channel 3.
Analog - ALRT
Digital comparator output or conversion-ready interrupt/asynchronous read signal.
GPIO - A+
ADC power supply output on the breakout, described by Adafruit as VIN through a ferrite. It is an output, not an analogue input.
PowerVoltage · derived from VIN - A-
ADC analogue ground output on the breakout, described by Adafruit as digital GND through a ferrite. It is an output, not an analogue input.
Ground - A0 address jumper
Back-side I2C address jumper. Closing it changes the default 0x48 address to 0x49 for this ADS1015 breakout.
Unknown - LED jumper
Power LED disable jumper. Cut the trace to disable the on-board power LED.
Unknown
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