ADS1115IDGSR-Q1 - 16-Bit I2C ADC, 860SPS | Texas Instruments
MPN: ADS1115IDGSR-Q1 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.78 | $1,780.00 |
Drop-in alternatives for ADS1115IDGSR-Q1 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADS1115IDGSR
β Drop-Inβ In Stock
$3.38 / Unit
View Datasheet βADS1115QDGSRQ1
β Drop-Inπ Reference alternative (not in catalog)
ADS1114IDGSR
β Drop-Inπ Reference alternative (not in catalog)
ADS1015IDGSR
β Drop-Inπ Reference alternative (not in catalog)
ADS1115BQDGSRQ1
β Drop-Inπ Reference alternative (not in catalog)
MCP3424-E/SL
β‘ Same Packageπ Reference alternative (not in catalog)
ADS1115IDGSR-Q1 Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Number of Input Channels | 4 (2 differential or 4 single-ended) |
| Sampling Rate | 8 to 860 SPS |
| Architecture | Delta-Sigma |
| Interface Type | I2C |
| Input Type | Differential / Single-Ended |
| PGA Gains | 2/3, 1, 2, 4, 8, 16 |
| Full-Scale Range (lowest PGA) | +/-256 mV |
| Supply Voltage | 2 V to 5.5 V |
| Integrated Features | PGA, Voltage Reference, Oscillator, Comparator |
| Package | 10-VSSOP (DGS) |
| Operating Temperature | -40C to +125C |
| Qualification | AEC-Q100 (automotive) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ADS1115IDGSR-Q1 Pin Configuration
| Pin 1 | ADDR β I2C address select |
| Pin 2 | ALERT/RDY β Comparator output or conversion-ready |
| Pin 3 | GND β Ground |
| Pin 4 | AIN0 β Analog input channel 0 |
| Pin 5 | AIN1 β Analog input channel 1 |
| Pin 6 | AIN2 β Analog input channel 2 |
| Pin 7 | AIN3 β Analog input channel 3 |
| Pin 8 | VDD β Power supply, 2V to 5.5V |
| Pin 9 | SDA β I2C serial data |
| Pin 10 | SCL β I2C serial clock |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADS1115IDGSR-Q1 is suitable for 6 applications: Automotive Battery Monitoring, Battery Management Systems (BMS), Industrial Analog Input Modules, Portable and Battery-Powered Instrumentation, Temperature and Sensor Acquisition, Power Supply Telemetry.
Automotive Battery Monitoring
The ADS1115IDGSR-Q1's AEC-Q100 qualification, -40C to +125C range, and 16-bit resolution with +/-256mV minimum full-scale make it ideal for automotive battery voltage sensing. Placed on the I2C bus of a body-control module or BMS slave, it digitizes divider-scaled battery rails with high linearity, while the integrated ALERT comparator flags undervoltage or overvoltage events without host polling.
Recommended
Battery Management Systems (BMS)
In BMS auxiliary sensing, the ADS1115IDGSR-Q1 measures cell balancing status, pack voltage, and shunt-based current with 16-bit precision. The PGA gain of 16x provides a +/-256mV full-scale range suited to small shunt signals, and the internal reference removes external precision components. Its 860SPS maximum rate is sufficient for slow monitoring loops that run alongside dedicated cell supervisors.
Recommended
Industrial Analog Input Modules
Factory automation I/O modules use the ADS1115IDGSR-Q1 to add four single-ended or two differential analog channels over a simple two-wire I2C bus. The internal PGA and reference eliminate signal-conditioning front-ends for 0-5V-class sensors, and its 860SPS rate covers most process-variable acquisition. The digital comparator supports local threshold alarms directly at the sensor node.
Recommended
Portable and Battery-Powered Instrumentation
The ADS1115IDGSR-Q1's low-power operation and duty-cycling between 8SPS and 860SPS let designers trade speed for average current in portable meters and data loggers. Its 10-pin VSSOP occupies minimal board area, and the integrated oscillator and reference remove crystal and reference BOM items, critical for compact handheld designs where the ADC digitizes bridge and divider sensors.
Recommended
Temperature and Sensor Acquisition
Precision analog-output sensors such as RTD bridges and thermistor dividers benefit from the ADS1115IDGSR-Q1's 16-bit noise performance and PGA down to the +/-256mV range, allowing direct connection without additional gain stages. Differential input mode rejects ground noise common in sensor wiring, and the I2C interface with four address options lets multiple ADCs share one MCU bus.
Recommended
Power Supply Telemetry
On DC-DC converter boards, the ADS1115IDGSR-Q1 digitizes output voltage dividers and shunt signals for PMBus-less health telemetry. With a 2V to 5.5V supply, it runs from typical 3.3V or 5V rails, and its I2C interface integrates with system MCUs. The comparator ALERT output enables autonomous fault flagging such as output undervoltage during sequencing events.
Recommended
Recommended Products Summary
Engineering reference data for ADS1115IDGSR-Q1 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS1115IDGSR | ADS1115QDGSRQ1 | ADS1114IDGSR | ADS1015IDGSR | MCP3424-E/SL |
|---|---|---|---|---|---|---|
| Package | VSSOP-10 (DGS) | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (DGS) - same | VSSOP-10 (SL) - different pinout |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 12 bit | 12 to 18 bit |
| Max Sample Rate | 860 SPS | 860 SPS | 860 SPS | 860 SPS | 3300 SPS | 240 SPS |
| Input Channels | 4 (2 diff) | 4 (2 diff) | 4 (2 diff) | 1 differential | 4 (2 diff) | 4 (2 diff) |
| Interface | I2C | I2C | I2C | I2C | I2C | I2C |
| Qualification | AEC-Q100 | None (industrial) | AEC-Q100 | None (industrial) | None (industrial) | None (industrial) |
| PGA | Yes (2/3x to 16x) | Yes | Yes | Yes | Yes | Yes (1x to 8x) |
Key Differentiators
- Automotive AEC-Q100 qualification with 4-channel MUX (vs ADS1115IDGSR)
- Higher maximum sample rate in same footprint (vs ADS1015IDGSR)
- Integrated 4-channel MUX (vs ADS1114IDGSR)
Design Notes
Place a 0.1uF ceramic decoupling capacitor within 2mm of the VDD pin (pin 8) with a solid via to the ground plane. Keep analog input traces (AIN0-AIN3) short and away from SDA/SCL switching lines; if the source impedance is high, add an RC filter (e.g., 1k ohm / 10nF) at the input pins to reduce noise pickup without significantly settling error at 8SPS rates.
Input pins must stay within GND - 0.3V to VDD + 0.3V; clamp or divide any signal exceeding the supply. Choose ADDR pin level carefully - it sets one of four I2C addresses (0x48 to 0x4B); floating inputs are not allowed on ADDR. Pull up SDA/SCL with 2.2k to 4.7k ohm resistors on 3.3V buses; long buses at 400kHz may need stronger pull-ups.
For battery-powered designs, use the internal duty-cycling by writing the low data-rate register (8SPS) and powering down between conversions via the single-shot OS bit - this dramatically reduces average current compared with continuous mode. The ALERT pin can double as a conversion-ready output (RDY mode) to wake the host MCU only when new data is available.
Compliance Information
AEC-Q100 qualified automotive variant (ADS1115-Q1 family). RoHS/REACH per TI product page.
