ADS1118 16-Bit, 860SPS, 4-Ch Delta-Sigma ADC With PGA, Oscillator, Vref, Temp Sensor, and SPI Interface | TI.com

ADS1118 (ACTIVE)

16-Bit, 860SPS, 4-Ch Delta-Sigma ADC With PGA, Oscillator, Vref, Temp Sensor, and SPI Interface

 

Description

The ADS1118 is a precision, low power, 16-bit analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals in an ultra-small, leadless X2QFN-10 package or a VSSOP-10 package. The ADS1118 integrates a programmable gain amplifier (PGA), voltage reference, oscillator and high-accuracy temperature sensor. These features, along with a wide power supply range from 2 V to 5.5 V, make the ADS1118 ideally suited for power- and space-constrained, sensor-measurement applications.

The ADS1118 can 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 both large and small signals to be measured with high resolution. An input multiplexer (MUX) allows to measure two differential or four single-ended inputs. The high-accuracy temperature sensor can be used for system-level temperature monitoring or cold-junction compensation for thermocouples.

The ADS1118 operates either in continuous-conversion mode, or in a single-shot mode that automatically powers down after a conversion. Single-shot mode significantly reduces current consumption during idle periods. Data are transferred through a serial peripheral interface (SPI). The ADS1118 is specified from –40°C to +125°C.

Features

  • Ultrasmall X2QFN Package:
    2 mm × 1.5 mm × 0.4 mm
  • Wide Supply Range: 2 V to 5.5 V
  • Low Current Consumption:
    • Continuous Mode: Only 150 µA
    • Single-Shot Mode: Automatic Power Down
  • Programmable Data Rate:
    8 SPS to 860 SPS
  • Single-Cycle Settling
  • Internal Low-Drift Voltage Reference
  • Internal Temperature Sensor:
    0.5°C (Maximum) Error: 0°C to 70°C
  • Internal Oscillator
  • Internal PGA
  • Four Single-Ended or Two Differential Inputs
  • APPLICATIONS
    • Temperature Measurement:
      • Thermocouple nMeasurement
      • Cold-Junction Compensation
      • Thermistor Measurement
    • Portable Instrumentation
    • Factory Automation and Process Controls

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

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
Number of input channels
Interface
Operating Temperature Range (C)
Package Group
Approx. price (US$)
Power Consumption (Typ) (mW)
Package Size: mm2:W x L (PKG)
Architecture
Input type
Multi-Channel Configuration
Reference Mode
Features
Input range (Max) (V)
Input range (Min) (V)
Analog voltage AVDD (Min) (V)
Analog voltage AVDD (Max) (V)
Digital supply (Min) (V)
Digital supply (Max) (V)
INL (Max) (+/-LSB)
Rating
ADS1118 ADS1018 ADS1113 ADS1114 ADS1115 ADS1119 ADS112C04
16     12     16     16     16     16     16    
0.86     3.3     0.86     0.86     0.86     1     4    
4     4     1     1     4     4     4    
SPI     SPI     I2C     I2C     I2C     I2C     I2C    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
TSSOP | 16
WQFN | 16    
TSSOP | 16
WQFN | 16    
2.30 | 1ku     1.15 | 1ku     1.95 | 1ku     2.15 | 1ku     2.30 | 1ku     2.30 | 1ku     3.15 | 1ku    
0.3     0.3     0.3     0.3     0.3     1     1.4    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WQFN: 9 mm2: 3 x 3 (WQFN | 16)    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Multiplexed     Multiplexed     N/A     N/A     Multiplexed     Multiplexed     Multiplexed    
Int     Int     Int     Int     Int     Ext
Int    
Ext
Int    
Oscillator
PGA
Temp Sensor
Small Size    
Oscillator
PGA
Temp Sensor
Small Size    
Oscillator
Small Size    
Comparator
Oscillator
PGA
Small Size    
Comparator
Oscillator
PGA    
50/60 Hz Rejection
Oscillator
PGA    
50/60 Hz Rejection
Excitation Current Sources (iDACs)
Oscillator
PGA
Temp Sensor
Small Size    
5.5     5.5     5.5     5.5     5.5     5.5     2.85
5.6    
0     0     0     0     0     0     -2.85
0    
2     2     2     2     2     2.3     -2.5
2.3    
5.5     5.5     5.5     5.5