ADS114S06B (ACTIVE)

16-Bit, 4kSPS, 6-Ch Delta-Sigma ADC With PGA and Voltage Reference

 

Description

The ADS114S06B and ADS114S08B are precision, 16-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs) that offer low power consumption and many integrated features to reduce system cost and component count in applications measuring small-signal sensors.

These ADCs feature a digital filter that offers low-latency conversion results and 50-Hz or 60-Hz rejection for noisy industrial environments. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals for resistive bridge or thermocouple applications. Additionally, these devices integrate a low-drift, 2.5-V reference that reduces printed circuit board (PCB) area. Finally, two programmable excitation current sources (IDACs) allow for easy and accurate RTD biasing.

An input multiplexer supports 12 inputs for the ADS114S08B and six inputs for the ADS114S06B that can be connected to the ADC in any combination for design flexibility. In addition, these devices include features such as sensor burn-out detection, voltage bias for thermocouples, system monitoring, and four general-purpose I/Os.

The devices are offered in a leadless VQFN-32 or a TQFP-32 package.

Features

  • Low Power Consumption: As Low as 280 µA
  • Programmable Gain: 1 to 128
  • Programmable Data Rates: 2.5 SPS to 4 kSPS
  • Simultaneous 50-Hz and 60-Hz Rejection at
    ≤ 20 SPS With Low-Latency Digital Filter
  • Analog Multiplexer with 12 (ADS114S08B) or 6 (ADS114S06B) Independently Selectable Inputs
  • Dual-Matched Programmable Current Sources for Sensor Excitation: 10 µA to 2000 µA
  • Internal Reference: 2.5 V, 8 ppm/°C (typ) Drift
  • Internal Oscillator: 4.096 MHz, 2% Accuracy
  • Internal Temperature Sensor
  • Self Offset and System Calibration
  • Four General-Purpose I/Os
  • SPI-Compatible Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 3.6 V
  • Operating Temperature: –40°C to +125°C
  • Pin-Compatible With the ADS114S0x

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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
ADS114S06B ADS1120 ADS1147 ADS114S06
16    16    16    16   
4000    2000    2000    4000   
6    4    4    6   
Differential
Single-Ended   
Differential
Single-Ended   
Differential
Single-Ended   
Differential
Single-Ended   
1.75    1.4    2.3    1.75   
-2.625
0   
-2.85
0   
-2.125
0   
-2.625
0   
2.625
5.25   
2.85
5.6   
2.125
4.25   
2.625
5.25   
SPI    SPI    SPI    SPI   
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor   
50/60 Hz Rejection
Excitation Current Sources (iDACs)
Oscillator
PGA
Temp Sensor   
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor   
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor   
2.7    2.3    2.7    2.7   
5.25    5.5    5.25    5.25   
Delta-Sigma    Delta-Sigma    Delta-Sigma    Delta-Sigma   
-40 to 125    -40 to 125    -40 to 105    -50 to 125   
32TQFP
32VQFN   
16TSSOP
16VQFN   
20TSSOP    32TQFP
32VQFN   
Ext
Int   
Ext
Int
Supply   
Ext
Int   
Ext
Int   

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