ADS8166 16-bit, 250-kSPS, 8-ch SAR ADC with VREF, VREF buffer and direct sensor interface | TI.com

ADS8166 (ACTIVE)

16-bit, 250-kSPS, 8-ch SAR ADC with VREF, VREF buffer and direct sensor interface

 

Description

The ADS816x is a family of 16-bit, 8-channel, high-precision successive approximation register (SAR) analog-to-digital converters (ADCs) operating from a single 5-V supply with a 1-MSPS (ADS8168),
500-kSPS (ADS8167), and 250-kSPS (ADS8166) total throughput.

The input multiplexer supports extended settling time, which makes driving the analog inputs easier. The output of the multiplexer and ADC analog inputs are available as device pins. This configuration allows one ADC driver op amp to be used for all eight analog inputs of the multiplexer. The ADS816x simplifies data processing with an enhanced channel sequencer that reduces software complexity.

The ADS816x features a digital window comparator with programmable high and low alarm thresholds with hysteresis per analog input channel. The single op-amp solution with programmable alarm thresholds enables low power, low cost, and smallest form-factor applications.

Features

  • Compact Low-Power Data Acquisition System:
    • MUX Breakout Enables Single External Driver Amplifier
    • Single-Supply Operation
    • 16-Bit SAR ADC
    • Low Drift Integrated Reference and Buffer
    • 0.5 × VREF Output for Analog Input DC Biasing
  • Excellent AC and DC Performance:
    • SNR: 92-dB, THD: –110-dB
    • INL: ±0.3-LSB, 16-Bit No Missing Codes
  • Low Leakage Multiplexer With Sequencer:
    • Multiple Channel Sequencing Options:
      • Manual Mode, On-the-Fly Mode, Auto Sequence Mode, Custom Channel Sequencing
    • Early Switching Enables Direct Sensor Interface
    • Fast Response Time With On-the-Fly Mode
  • System Monitoring Features:
    • Per Channel Programmable Window Comparator
    • Alert Output for MCU Interrupt
    • False Trigger Avoidance With Programmable Hysteresis
  • Enhanced-SPI Digital Interface:
    • 1-MSPS Throughput With 16-MHz SCLK
    • High-Speed, 70-MHz Digital Interface
  • Wide Temperature Range: –40°C to +125°C

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Parametrics

Compare all products in Precision ADCs (<=10MSPS) Email Download to Excel
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) SNR (dB) THD (Typ) (dB) Rating
ADS8166 Order now 16     250     8     Enhanced SPI
SPI    
-40 to 125     VQFN | 32     4.05 | 1ku     15     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Comparator     5     0     3     5.5     1.65     5.5     0.8     92     -110     Catalog    
ADS8167 Order now 16     500     8     Enhanced SPI
SPI    
-40 to 125     VQFN | 32     6.55 | 1ku       32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Comparator     5     0     3     5.5     1.65     5.5     0.8     92     -110     Catalog    
ADS8168 Order now 16     1000     8     SPI     -40 to 125     VQFN | 32     9.95 | 1ku     30     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Comparator     5     0     3     5.5     1.65     5.5     0.8     92     -110     Catalog    
ADS8331 Order now 16     500     4     SPI     -40 to 85