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.

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 · i2c-clockVoltage · logic level follows VIN
SDA
I2C data line. The Learn pinout states this pin has a 10K pullup to VIN.
Type · i2c-dataVoltage · logic level follows VIN
STEMMA QT
STEMMA QT / Qwiic connectors carrying I2C, power and ground for solderless connection to development boards or accessories.
Type · i2c-connectorVoltage · power follows VIN
ADDR
I2C address selection pin for ADS11x5 addressing. The base address is 0x48 and the address pin selects alternate addresses.
Type · address-select
A0
ADC input pin for channel 0.
Type · analog-input
A1
ADC input pin for channel 1.
Type · analog-input
A2
ADC input pin for channel 2.
Type · analog-input
A3
ADC input pin for channel 3.
Type · analog-input
ALRT
Digital comparator output or conversion-ready interrupt/asynchronous read signal.
Type · digital-output
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 · power-outputVoltage · 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-output
A0 address jumper
Back-side I2C address jumper. Closing it changes the default 0x48 address to 0x49 for this ADS1015 breakout.
Type · solder-jumper
LED jumper
Power LED disable jumper. Cut the trace to disable the on-board power LED.
Type · solder-jumper

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-clock	I2C clock line. The Learn pinout states this pin has a 10K pullup to VIN.	logic level follows VIN
SDA	i2c-data	I2C data line. The Learn pinout states this pin has a 10K pullup to VIN.	logic level follows VIN
STEMMA QT	i2c-connector	STEMMA QT / Qwiic connectors carrying I2C, power and ground for solderless connection to development boards or accessories.	power follows VIN
ADDR	address-select	I2C address selection pin for ADS11x5 addressing. The base address is 0x48 and the address pin selects alternate addresses.
A0	analog-input	ADC input pin for channel 0.
A1	analog-input	ADC input pin for channel 1.
A2	analog-input	ADC input pin for channel 2.
A3	analog-input	ADC input pin for channel 3.
ALRT	digital-output	Digital comparator output or conversion-ready interrupt/asynchronous read signal.
A+	power-output	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-output	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	solder-jumper	Back-side I2C address jumper. Closing it changes the default 0x48 address to 0x49 for this ADS1015 breakout.
LED jumper	solder-jumper	Power LED disable jumper. Cut the trace to disable the on-board power LED.

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