ADS1018 12-Bit 3.3kSPS 4-Ch Delta-Sigma ADC With PGA, Oscillator, VREF, Temp Sensor, and SPI | TI.com

ADS1018 (ACTIVE)

12-Bit 3.3kSPS 4-Ch Delta-Sigma ADC With PGA, Oscillator, VREF, Temp Sensor, and SPI

 

Automotive AEC-Q100 Grade 1 qualified version available, see ADS1018-Q1.

Description

The ADS1018 is a precision, low-power, 12-bit, noise-free, analog-to-digital converter (ADC) that provides all features necessary to measure the most common sensor signals in an ultrasmall, leadless, X2QFN-10 or VSSOP-10 package. The ADS1018 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 ADS1018 ideally suited for power- and space-constrained, sensor-measurement applications.

The ADS1018 performs conversions at data rates up to 3300 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 measurement of two differential or four single-ended inputs. The high-accuracy temperature sensor is used for system-level temperature monitoring, or cold-junction compensation for thermocouples.

The ADS1018 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™).

Features

  • Ultrasmall X2QFN Package
    2 mm × 1.5 mm × 0.4 mm
  • 12-Bit Noise-Free Resolution
  • 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: 128 SPS to 3300 SPS
  • Single-Cycle Settling
  • Internal Low-Drift Voltage Reference
  • Internal Temperature Sensor:
    2°C (max) Error
  • Internal Oscillator
  • Internal PGA
  • Four Single-Ended or Two Differential Inputs
  • Specified Temperature: –40°C to +125°C

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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
ADS1018 ADC128D818 ADS1013 ADS1014 ADS1015 ADS1118
12     12     12     12     12     16    
3.3     0.082     3.3     3.3     3.3     0.86    
4     8     1     1     4     4    
SPI     I2C     I2C     I2C     I2C     SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
VSSOP | 10
X2QFN | 10    
TSSOP | 16     VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
VSSOP | 10
X2QFN | 10    
1.15 | 1ku     1.95 | 1ku     0.95 | 1ku     1.05 | 1ku     1.15 | 1ku     2.30 | 1ku    
0.3     2     0.3     0.3     0.3     0.3    
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)
10X2QFN: 3 mm2: 2 x 1.5 (X2QFN | 10)    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Differential
Single-Ended    
Multiplexed     Multiplexed    
   
   
Multiplexed     Multiplexed    
Int     Ext
Int    
Int     Int     Int     Int    
Oscillator
PGA
Temp Sensor
Small Size    
Oscillator
Temp Sensor    
Oscillator
Small Size    
Comparator
Oscillator
PGA
Small Size    
Comparator
Oscillator
PGA
Small Size    
Oscillator
PGA
Temp Sensor
Small Size    
5.5     5.5     5.5     5.5     5.5     5.5    
0     0     0     0     0     0    
2     3     2     2     2     2    
5.5     5.5     5.5     5.5     5.5     5.5    
2     3     2     2     2     2    
5.5     5.5     5.5     5.5     5.5     5.5    
0.5     1     0.5