Overview
The ADS1115IDGSR from Texas Instruments is a precision, low-power, 16-bit analog-to-digital converter (ADC) designed for a variety of sensor measurement applications. This device is part of the ADS111x family, which includes the ADS1113 and ADS1114. The ADS1115IDGSR is available in a VSSOP-10 package and is well-suited for power- and space-constrained environments due to its ultra-small size and low power consumption.
The device features a wide operating supply range of 2.0 V to 5.5 V, an internal low-drift voltage reference, and an internal oscillator. It supports both continuous-conversion and single-shot modes, significantly reducing power consumption during idle periods.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-10 |
| Resolution | 16-bit |
| Data Rate | 8 SPS to 860 SPS |
| Supply Voltage | 2.0 V to 5.5 V |
| Current Consumption | 150 µA (Continuous-Conversion Mode) |
| Operating Temperature Range | –40°C to +125°C |
| Input Types | Four Single-Ended or Two Differential Inputs |
| Interface | I2C with Four Pin-Selectable Addresses |
| Programmable Gain Amplifier (PGA) | Input ranges from ±256 mV to ±6.144 V |
| Digital Comparator | For under- and overvoltage detection |
Key Features
- Ultra-Small Package: Available in VSSOP-10 and X2QFN-10 packages, making it ideal for space-constrained applications.
- Wide Supply Range: Operates from 2.0 V to 5.5 V, providing flexibility in various power environments.
- Low Power Consumption: Consumes only 150 µA in continuous-conversion mode, reducing power consumption significantly.
- Programmable Data Rate: Supports data rates from 8 SPS to 860 SPS, allowing for adjustable performance based on application needs.
- Internal Low-Drift Voltage Reference and Oscillator: Ensures stable and accurate conversions without the need for external components.
- I2C Interface: Features four pin-selectable addresses for easy integration into I2C-based systems.
- Input Multiplexer (MUX): Allows for two differential or four single-ended input measurements, enhancing versatility in sensor connections.
- Programmable Comparator: Enables under- and overvoltage detection, adding an extra layer of protection and monitoring capability.
Applications
- Portable Instrumentation: Ideal for handheld devices due to its small size and low power consumption.
- Battery Voltage and Current Monitoring: Suitable for monitoring battery health in various electronic devices.
- Temperature Measurement Systems: Can be used in temperature sensing applications requiring high precision.
- Consumer Electronics: Used in a variety of consumer electronics for precise analog-to-digital conversions.
- Factory Automation and Process Control: Applicable in industrial settings for precise measurement and control.
Q & A
- What is the resolution of the ADS1115IDGSR?
The ADS1115IDGSR has a 16-bit resolution.
- What are the available data rates for the ADS1115IDGSR?
The data rates range from 8 SPS to 860 SPS.
- What is the operating supply voltage range of the ADS1115IDGSR?
The device operates from 2.0 V to 5.5 V.
- How much current does the ADS1115IDGSR consume in continuous-conversion mode?
It consumes 150 µA in continuous-conversion mode.
- What types of inputs does the ADS1115IDGSR support?
The device supports four single-ended or two differential inputs.
- Does the ADS1115IDGSR have an internal oscillator and voltage reference?
Yes, it has an internal low-drift voltage reference and an internal oscillator.
- What interface does the ADS1115IDGSR use for communication?
The device uses an I2C interface with four pin-selectable addresses.
- What is the operating temperature range of the ADS1115IDGSR?
The operating temperature range is from –40°C to +125°C.
- Does the ADS1115IDGSR have a programmable gain amplifier (PGA)?
Yes, it includes a PGA with input ranges from ±256 mV to ±6.144 V.
- What is the purpose of the digital comparator in the ADS1115IDGSR?
The digital comparator is used for under- and overvoltage detection.
