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ADS8866

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16-Bit, 100-kSPS, 1-Ch SAR ADC with Single-Ended Input, SPI Interface and Daisy-Chain

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16-Bit, 100-kSPS, 1-Ch SAR ADC with Single-Ended Input, SPI Interface and Daisy-Chain

ADS8866

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Data sheet Order now

Product details

Parameters

Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 100 Interface type SPI Architecture SAR Input type Single-Ended Multi-channel configuration — Rating Catalog Reference mode Ext Input range (Max) (V) 5 Input range (Min) (V) 0 Features Daisy-Chainable, Oscillator, Small Size Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 0.7 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 93 Analog voltage AVDD (Max) (V) 3.6 INL (Max) (+/-LSB) 2 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 3.6 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3 x 3 VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • Sample rate: 100 kHz
  • No latency output
  • Unipolar, single-ended input range:
    0 to +VREF
  • SPI™-compatible serial interface with
    daisy-chain option
  • Excellent AC and DC performance:
    • SNR: 93 dB, THD: –108 dB
    • INL: ±1.0 LSB (typ), ±2.0 LSB (max)
    • DNL: ±1.0 LSB (max), 16-bit NMC
  • Wide operating range:
    • AVDD: 2.7 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V
      (independent of AVDD)
    • REF: 2.5 V to 5 V (independent of AVDD)
    • Operating temperature: –40°C to +85°C
  • Low-power dissipation:
    • 0.7 mW at 100 kSPS
    • 70 µW at 10 kSPS
  • Power-down current (AVDD): 50 nA
  • Full-scale step settling to 16 Bits: 1200 ns
  • Packages: VSSOP-10 and VSON-10

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Description

The ADS8866 is a 16-bit, 100-kSPS, single-ended input, analog-to-digital converter (ADC). The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD).

The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices.

The device supports unipolar single-ended analog inputs in the range of –0.1 V to VREF + 0.1 V.

Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS8866 excellent for lower-speed applications.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet ADS8866 16-bit, 100-kSPS, serial interface, micropower, miniature, single-ended input, SAR analog-to-digital converter datasheet (Rev. C) Mar. 25, 2019
Application note Circuit for protecting low-voltage SAR ADC from electrical overstress with minim May 25, 2019
White paper Voltage-reference impact on total harmonic distortion Aug. 01, 2016
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
Description

The ADS8860 evaluation module (EVM) performance demonstration kit (PDK) is an platform for evaluating the ADS8860 product, which is a successive approximation register (SAR) analog-to-digital converter (ADC).

The evaluation kit includes the ADS8860 evaluation board, precision host interface (PHI (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS8860 ADC
  • No external power supply required
  • Ships with PHI controller board, which provides convenient interface to the EVM over USB 2.0 (or higher) for power delivery and digital (...)
View details
EVALUATION BOARD Download
document-generic User guide
499
Description

PLABS-SAR-EVM-PDK is an experimental platform used in conjunction with TI Precision Labs videos to gain a deeper understanding of successive approximation register (SAR) analog-to-digital converter (ADC) circuits. The evaluation module (EVM) platform contains two channels for common SAR (...)

Features
  • Intuitive setup – PCB overlay shows the schematic
  • No external power supply required
  • Includes several coupon boards with different driving amplifier RC filters to facilitate experimentation
  • Ships with PHI controller - provides convenient interface to EVM over USB 2.0 (or higher) for power delivery (...)
View details

Design tools & simulation

SIMULATION MODEL Download
SBAM172.ZIP (35 KB) - IBIS Model
SIMULATION MODEL Download
SBAM179.ZIP (157 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
CALCULATION TOOL Download
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC — ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
CALCULATION TOOL Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Motor Monitoring Using Wireless Vibration Sensor Reference Design Enabling Preventive Maintenance
TIDA-01469 — This reference design is a low-power wireless subsystem solution that monitors motors using vibration sensing to determine if preventative maintenance is necessary. An FFT of the vibration data can be sent out to another device using either Bluetooth low energy or sub-1GHz wireless protocols. The (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options
VSSOP (DGS) 10 View options

Ordering & quality

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  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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