ADS1115IDGSR - 16-Bit I2C ADC with PGA & Reference | TI
MPN: ADS1115IDGSR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.74 | $6.74 |
| 10 | $6.38 | $63.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.69 | $4,690.00 |
| 3,000 | $4.3 | $12,900.00 |
Drop-in alternatives for ADS1115IDGSR 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:
ADS1115QDGSRQ1
β Drop-Inπ Reference alternative (not in catalog)
ADS1114IDGSR
β Drop-Inπ Reference alternative (not in catalog)
ADS1113IDGSR
β Drop-Inπ Reference alternative (not in catalog)
ADS1015IDGSR
β Drop-Inπ Reference alternative (not in catalog)
SGM58031XMS10G/TR
β Drop-Inπ Reference alternative (not in catalog)
ADS1115IDGSR Maximum Ratings & Electrical Characteristics
| Resolution | 16-bit |
| Input Channels | 4 single-ended or 2 differential |
| Interface | I2C |
| Max Sample Rate | 860 SPS |
| Data Rate Options | 8, 16, 32, 64, 128, 250, 475, 860 SPS |
| Supply Voltage Range | 2.0 V to 5.5 V |
| PGA Gains | 2/3, 1, 2, 4, 8, 16 V/V |
| I2C Address Options | 0x48 to 0x4B (4 addresses) |
| Internal Voltage Reference | Yes, low-drift |
| Internal Oscillator | Yes |
| Digital Comparator | Yes, programmable |
| Operating Temperature | -40C to +125C |
| Package | VSSOP-10 (DGS) |
| Mounting Type | Surface Mount |
| Number of Pins | 10 |
| Current Consumption | [DATA_NEEDED: quiescent current] |
ADS1115IDGSR Pin Configuration
| Pin 1 | ADDR β I2C address select pin |
| Pin 2 | ALERT/RDY β Comparator alert output or conversion-ready indicator |
| Pin 3 | GND β Ground |
| Pin 4 | AIN0 β Analog input 0 |
| Pin 5 | AIN1 β Analog input 1 |
| Pin 6 | AIN2 β Analog input 2 |
| Pin 7 | AIN3 β Analog input 3 |
| Pin 8 | SCL β I2C clock line |
| Pin 9 | SDA β I2C data line |
| Pin 10 | VDD β Power supply, 2.0V to 5.5V |
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 is suitable for 6 applications: Battery Voltage & Current Monitoring, IoT Sensor Node Data Acquisition, Precision Portable Instrumentation, Industrial Process Control, Solar / Energy Harvesting Power Monitoring, Test & Measurement Data Logger.
Battery Voltage & Current Monitoring
In battery-powered systems, the ADS1115IDGSR measures cell voltages and current-sense resistor voltages through its 4-channel MUX. Its 16-bit resolution and 860 SPS max data rate allow precise tracking of charge/discharge curves. With PGA gain of 16, microvolt-level shunt voltages can be resolved without an external amplifier. The internal comparator can generate an alert when voltage crosses a threshold, reducing MCU wake-ups. Paired with INA219AIDCNR for current and TPS7A4700RGWR for low-noise rails, this ADC supports high-side/low-side monitoring in portable and industrial designs.
Recommended
IoT Sensor Node Data Acquisition
The ADS1115IDGSR is ideal for IoT nodes that monitor temperature, humidity, or pressure and report via I2C. Its 2.0V to 5.5V supply and low-power active operation allow direct battery operation, while the 4 I2C addresses let multiple ADS1115s share one bus. The internal voltage reference eliminates the need for a precision reference IC. For stable supply rails, pair with TPS7A1601DGNR or TPS62840DLCR. The 16-bit output preserves small sensor signal variations after PGA amplification, making it easier to detect environmental changes in smart agriculture and smart building systems.
Recommended
Precision Portable Instrumentation
Handheld multimeters, data loggers, and portable analyzers require high resolution without high power. The 860-SPS delta-sigma ADC with internal reference and oscillator provides 16-bit measurements in a 10-pin VSSOP. The programmable comparator can indicate out-of-range readings, simplifying front-end firmware. With a -40C to +125C range, it suits field instruments. A REF3030AIDBZR can serve as a stable excitation reference for external sensors, while TPS7A4700RGWR supplies ultra-low-noise analog power to the ADC and sensor bridge.
Recommended
Industrial Process Control
In industrial PLCs and transmitters, the ADS1115IDGSR digitizes 4-20mA loop voltages, thermocouple outputs, and strain-gauge bridge signals. The integrated PGA with gains up to 16 V/V amplifies low-level sensor outputs, and the 16-bit resolution supports 0.1% class measurements. Its rail-to-rail input range and I2C interface simplify isolation barriers. Use INA4180AIPWR for current-sense and TPS7A1601DGNR for rugged 24V input regulation, ensuring reliable operation in factory automation and process control panels.
Recommended
Solar / Energy Harvesting Power Monitoring
Energy-harvesting systems need to measure tiny solar panel voltages and battery charge currents with minimal power overhead. The ADS1115IDGSR's low-power consumption and internal oscillator allow periodic measurement without loading the harvested rail. The comparator can wake the host only when a threshold is exceeded. With four addresses, one bus can monitor panel voltage, battery voltage, and load current. Pair with INA226AIDGSR for I2C power monitoring and BQ25601RTWR for charger management to build a complete energy-aware system.
Recommended
Test & Measurement Data Logger
For benchtop and field-test instruments, the ADS1115IDGSR provides a low-cost 16-bit front end. The high input impedance reduces loading on circuits under test, and the programmable PGA and comparator enable autoranging and limit detection. The I2C interface allows easy connection to MCUs and single-board computers. Pairing with REF3030AIDBZR improves absolute accuracy and TPS7A4700RGWR reduces supply noise, making this ADC suitable for multi-channel data logging in environmental and laboratory applications.
Recommended
Recommended Products Summary
Engineering reference data for ADS1115IDGSR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS1115QDGSRQ1 | ADS1114IDGSR | ADS1113IDGSR | ADS1015IDGSR | SGM58031XMS10G/TR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | SGMC |
| Package | VSSOP-10 (DGS) | VSSOP-10 (DGS) | VSSOP-10 (DGS) | VSSOP-10 (DGS) | VSSOP-10 (DGS) | VSSOP-10/MSOP-10 |
| Resolution | 16-bit | 16-bit | 16-bit | 16-bit | 12-bit | 16-bit |
| Input Channels | 4 single-ended / 2 differential | 4 single-ended / 2 differential | 1 channel | 1 channel | 4 single-ended / 2 differential | 4 single-ended / 2 differential (probable) |
| Max Data Rate | 860 SPS | 860 SPS | 860 SPS | 860 SPS | 3300 SPS | [DATA_NEEDED] |
| PGA Gain Range | 2/3 to 16 V/V | 2/3 to 16 V/V | 2/3 to 16 V/V | None (fixed gain) | 2/3 to 16 V/V | [DATA_NEEDED] |
| I2C Address Options | 0x48 to 0x4B | 0x48 to 0x4B | 0x48 to 0x4B | 0x48 to 0x4B | 0x48 to 0x4B | [DATA_NEEDED] |
| Internal Comparator | Yes | Yes | Yes | No | Yes | Yes (probable) |
| Automotive Grade | No | Yes (AEC-Q100) | No | No | No | No |
Key Differentiators
- 16-bit resolution with 4-channel MUX in a VSSOP-10 package (vs ADS1015IDGSR)
- Integrated PGA and comparator (vs ADS1113IDGSR)
- TI ecosystem and documented I2C compatibility (vs SGM58031XMS10G/TR)
Design Notes
Place a 0.1uF ceramic capacitor directly between VDD and GND close to the ADC pins, and a 1uF bulk capacitor nearby. Use short traces for analog inputs and keep them away from digital switching signals. For I2C lines, use 2.2kohm pull-up resistors to VDD; for high-speed modes, reduce capacitance. The VSSOP-10 package has no exposed thermal pad, so standard SMD soldering is sufficient.
Do not leave unused analog inputs floating; tie them to GND or VDD or configure the input MUX to ignore them. Unused input pins may pick up noise and increase current. Ensure the I2C address pin is tied to VDD, GND, SCL, or SDA to select one of four addresses. A floating ADDR pin may cause bus conflicts or incorrect device address.
The supply voltage must stay within 2.0V to 5.5V. For best PSRR, use a low-noise LDO such as the TPS7A4700RGWR for the analog VDD rail. The power dissipation is low (microamps), so thermal management is not critical; still ensure soldering follows the VSSOP-10 reflow profile. Adding a series ferrite bead on VDD can further reduce switching noise from digital rails.
Compliance Information
Verified web snippets do not explicitly list RoHS/REACH/conflict minerals for ADS1115IDGSR. Package is lead-free per TI's typical VSSOP offering, but not confirmed in provided data.
