Overview
The ADS1115IRUGR, produced by Texas Instruments, is a 16-bit, ultra-small, low-power, precision analog-to-digital converter (ADC) designed for power- and space-constrained sensor measurement applications. This device is part of the ADS111x family, which includes the ADS1113 and ADS1114, but the ADS1115 stands out with its four single-ended or two differential input channels, programmable gain amplifier (PGA), and digital comparator.
Offered in a leadless X2QFN-10 package, the ADS1115 integrates a low-drift voltage reference, an internal oscillator, and an I2C-compatible serial interface with four pin-selectable addresses. This combination of features makes it highly suitable for a variety of applications requiring precise and efficient analog-to-digital conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Data Rate | 8 SPS to 860 SPS | SPS |
| Supply Voltage Range | 2.0V to 5.5V | V |
| Current Consumption (Continuous-Conversion Mode) | 150 μA | μA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package Type | X2QFN-10 | |
| Package Dimensions | 2mm × 1.5mm × 0.4mm | mm |
| Input Channels | Four single-ended or two differential | |
| Programmable Gain Amplifier (PGA) Input Ranges | ±256 mV to ±6.144 V | V |
| Internal Components | Low-drift voltage reference, internal oscillator, digital comparator | |
| Interface | I2C with four pin-selectable addresses |
Key Features
- Ultra-Small Package: Available in a leadless X2QFN-10 package with dimensions of 2mm × 1.5mm × 0.4mm, making it ideal for space-constrained applications.
- Wide Supply Range: Operates from a supply voltage of 2.0V to 5.5V, providing flexibility in system design.
- Low Current Consumption: Consumes only 150 μA in continuous-conversion mode, suitable for battery-powered devices.
- Programmable Data Rate: Data rates can be programmed from 8 SPS to 860 SPS, allowing for adjustable performance based on application needs.
- Internal Components: Includes a low-drift voltage reference, an internal oscillator, and a programmable gain amplifier (PGA) for precise measurements.
- Input Multiplexer (MUX): Allows for two differential or four single-ended input measurements, enhancing the device's versatility.
- Digital Comparator: Provides under- and overvoltage detection capabilities.
- I2C Interface: Features an I2C-compatible serial interface with four pin-selectable addresses for easy communication.
Applications
- Portable Instrumentation: Ideal for handheld devices and portable measurement tools due to its low power consumption and small size.
- 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 and low power consumption.
- Consumer Electronics: Applicable in a wide range of consumer electronics where space and power efficiency are crucial.
- Factory Automation and Process Control: Useful in industrial automation for precise and reliable sensor measurements.
Q & A
- What is the resolution of the ADS1115IRUGR?
The ADS1115IRUGR has a resolution of 16 bits.
- What are the available data rates for the ADS1115IRUGR?
The data rates can be programmed from 8 SPS to 860 SPS.
- What is the supply voltage range for the ADS1115IRUGR?
The device operates from a supply voltage of 2.0V to 5.5V.
- How much current does the ADS1115IRUGR consume in continuous-conversion mode?
The device consumes 150 μA in continuous-conversion mode.
- What types of input channels does the ADS1115IRUGR support?
The device supports four single-ended or two differential input channels.
- What are the input ranges of the programmable gain amplifier (PGA) in the ADS1115IRUGR?
The PGA input ranges are from ±256 mV to ±6.144 V.
- Does the ADS1115IRUGR have an internal oscillator and voltage reference?
Yes, the device includes an internal low-drift voltage reference and an internal oscillator.
- What type of interface does the ADS1115IRUGR use for communication?
The device uses an I2C-compatible serial interface with four pin-selectable addresses.
- What is the operating temperature range of the ADS1115IRUGR?
The operating temperature range is from –40°C to +125°C.
- What are some common applications of the ADS1115IRUGR?
The device is commonly used in portable instrumentation, battery voltage and current monitoring, temperature measurement systems, consumer electronics, and factory automation and process control.
