1 Features 1• Ultra-Small X2QFN Package: 2 mm × 1.5 mm × 0.4 mm • Wide Supply Range: 2.0 V to 5.5 V • Low Current Consumption: 150 μA (Continuous-Conversion Mode) • Programmable Data Rate: 8 SPS to 860 SPS • Single-Cycle Settling • Internal Low-Drift Voltage Reference • Internal Oscillator • I2C Interface: Four Pin-Selectable Addresses • Four Single-Ended or Two Differential Inputs (ADS1115) • Programmable Comparator (ADS1114 and ADS1115) • Operating Temperature Range: –40°C to +125°C
2 Applications • Portable Instrumentation • Battery Voltage and Current Monitoring • Temperature Measurement Systems • Consumer Electronics • Factory Automation and Process Control
3 Description The ADS1113, ADS1114, and ADS1115 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.
