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1. Description
The ADS1115IDGSR devices (ADS111x) are precision, low-power, 16-bit, I2Ccompatible, analog-to-digital converters (ADCs) offered in an ultra-small, leadless, X2QFN-10 package, and a VSSOP-10 package. The ADS111x devices incorporate a low-drift voltage reference and an oscillator. The ADS1114 and ADS1115 also incorporate a programmable gain amplifier (PGA) and a digital comparator. These features, along with a wide operating supply range, make the ADS111x well suited for power- and space-constrained, sensor measurement applications. The ADS111x perform conversions at data rates up to 860 samples per second (SPS). The PGA offers input ranges from ±256 mV to ±6.144 V, allowing precise large- and small-signal measurements. The ADS1115 features an input multiplexer (MUX) that allows two differential or four single-ended input measurements. Use the digital comparator in the ADS1114 and ADS1115 for under- and overvoltage detection. The ADS111x operate in either continuousconversion mode or single-shot mode. The devices are automatically powered down after one conversion in single-shot mode; therefore, power consumption is significantly reduced during idle periods.
2. Features
1. Ultra-Small X2QFN Package: 2 mm × 1.5 mm × 0.4 mm
2. Wide Supply Range: 2.0 V to 5.5 V
3. Low Current Consumption: 150 μA (Continuous-Conversion Mode)
4. Programmable Data Rate: 8 SPS to 860 SPS
5. Single-Cycle Settling
6. Internal Low-Drift Voltage Reference
7. Internal Oscillator
8. I²C Interface: Four Pin-Selectable Addresses
9. Four Single-Ended or Two Differential Inputs (ADS1115)
10. Programmable Comparator (ADS1114 and ADS1115)
11. Operating Temperature Range: –40°C to +125°C
3. Applications
1. Portable Instrumentation
2. Battery Voltage and Current Monitoring
3. Temperature Measurement Systems
4. Consumer Electronics
5. Factory Automation and Process Control
4. Pin Configuration
5. Pin Functions
6. Package outline
