16-Bit 860SPS 4-Ch Delta-Sigma ADC With PGA, Oscillator, VREF, Comparator, and I2C - ADS1115

ADS1115 (ACTIVE)

16-Bit 860SPS 4-Ch Delta-Sigma ADC With PGA, Oscillator, VREF, Comparator, and I2C

 

Description

The ADS1113, ADS1114, and ADS1115 devices (ADS111x) are precision, low-power, 16-bit, I2C-compatible, 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 continuous-conversion 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.

Features

  • 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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Interface
Features
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Architecture
Operating Temperature Range (C)
Pin/Package
Reference Mode
ADS1115 ADS1015 ADS1018 ADS1118
16    12    12    16   
860    3300    3300    860   
4    4    4    4   
Differential
Single-Ended   
Differential
Single-Ended   
Differential
Single-Ended   
Differential
Single-Ended   
0.3    0.3    0.3    0.3   
0    0    0    0   
5.5    5.5    5.5    5.5   
I2C    I2C    SPI    SPI   
Comparator
Oscillator
PGA   
Comparator
Oscillator
PGA   
Oscillator
PGA
Temp Sensor   
Oscillator
PGA
Temp Sensor   
2    2    2    2   
5.5    5.5    5.5    5.5   
Delta-Sigma    Delta-Sigma    Delta-Sigma    Delta-Sigma   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
10VSSOP
10X2QFN   
10VSSOP
10X2QFN   
10VSSOP
10X2QFN   
10VSSOP
10X2QFN   
Int    Int    Int    Int   

Other qualified versions of ADS1115

Version Part Number Definition
Automotive ADS1115-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects