ADS1118 16-bit 860-SPS 4-ch delta-sigma ADC with PGA, oscillator, VREF, temp sensor and SPI | TI.com

ADS1118
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16-bit 860-SPS 4-ch delta-sigma ADC with PGA, oscillator, VREF, temp sensor and SPI

 

Automotive AEC-Q100 Grade 1 qualified version available, see ADS1118-Q1.

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

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WEBENCH® Designer ADS1118

Sensor AFE Designer
 Thermocouple

Parametrics

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Part number Order 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 Order now 16     0.86     4     SPI     -40 to 125     VSSOP | 10
X2QFN | 10    
2.30 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
Delta-Sigma     Differential
Single-Ended    
Multiplexed     Int     Oscillator
PGA
Temp Sensor
Small Size    
5.5     0     2     5.5     2     5.5     1     Catalog    
ADS1018 Order now 12     3.3     4     SPI     -40 to 125     VSSOP | 10
X2QFN | 10    
1.15 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
Delta-Sigma     Differential
Single-Ended    
Multiplexed     Int     Oscillator
PGA
Temp Sensor
Small Size    
5.5     0     2     5.5     2     5.5     0.5     Catalog    
ADS1113 Order now 16     0.86     1     I2C     -40 to 125     VSSOP | 10
X2QFN | 10    
1.95 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
Delta-Sigma     Differential
Single-Ended    
    Int     Oscillator
Small Size    
5.5     0     2     5.5     2     5.5     1     Catalog    
ADS1114 Order now 16     0.86     1     I2C     -40 to 125     VSSOP | 10
X2QFN | 10    
2.15 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
Delta-Sigma     Differential
Single-Ended    
    Int     Comparator
Oscillator
PGA
Small Size    
5.5     0     2