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ADS7066

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8-channel 250-kSPS 16-bit ADC with internal reference, GPIOs and SPI

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Product details

Parameters

Resolution (Bits) 16 Number of input channels 8 Sample rate (Max) (kSPS) 250 Interface type SPI Architecture SAR Input type Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5.5 Input range (Min) (V) 0 Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 4 Analog voltage AVDD (Min) (V) 3 SNR (dB) 86 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 4 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.5 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

DSBGA (YBH) 16 3 mm² 1.66 x 1.66 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • Small solution size:
    • 1.62-mm × 1.62-mm WCSP
    • Space-saving, capless, 2.5-V internal reference
  • 8 channels configurable as any combination of:
    • Up to 8 analog inputs, digital inputs, or digital outputs
  • Programmable averaging filters:
    • Programmable sample size for averaging
    • Averaging with internal conversions
    • 20-bit resolution for average output
  • Low-leakage multiplexer with channel sequencer:
    • Manual mode
    • On-the-fly mode
    • Auto-sequence mode
  • Excellent AC and DC performance:
    • SNR: 86 dB, THD: –100 dB
    • Improved SNR with programmable averaging filters
    • INL: ±1 LSB, 16-bit no missing codes
    • Internal calibration improves offset and drift
    • High sample rate with no latency output:
      • 250 kSPS
  • Wide operating range:
    • ADC input range: 0 V to VREF and 2 x VREF
    • Analog supply: 3 V to 5.5 V
    • Digital supply: 1.65 V to 5.5 V
    • Temperature range: –40°C to +125°C
  • Enhanced-SPI digital interface:
    • High-speed, 60-MHz SPI interface
    • Achieve full throughput with > 4.5-MHz SPI

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Description

The ADS7066 is a small, 16-bit, 8-channel, high-precision successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS7066 has an integrated capless reference and a reference buffer that helps reduce the overall solution size by requiring fewer external components. The wafer-level-chip-scale package and fewer external components make this device suitable for space-constrained applications.

The ADS7066 features built-in offset calibration for improved accuracy over wide operating conditions of the system. The programmable averaging filters enable higher resolution measurement. The eight channels of the ADS7066 can be individually configured as analog inputs, digital inputs, or digital outputs that enable smaller system size and simplify circuit design for mixed signal feedback and digital control.

The enhanced-SPI enables the ADS7066 in achieving high throughput at lower clock speeds, thereby simplifying the board layout and lowering system cost. The ADS7066 features a cyclic redundancy check (CRC) for data read and write operations and the power-up configuration.




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Technical documentation

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Type Title Date
* Datasheet ADS7066 Small, 8-Channel, 16-Bit SAR ADC With GPIOs datasheet (Rev. A) Jun. 26, 2020
More literature ADS7066EVM-PDK EU Declaration of Conformity (DoC) Jun. 12, 2020
User guides ADS7066EVM-PDK Evaluation Module User's Guide (Rev. A) May 15, 2020
Application notes Resolution-Boosting ADS7066 Using Programmable Averaging Filter Apr. 27, 2020

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS7066 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS7066 successive approximation register (SAR) analog-to-digital converter (ADC)

The ADS7066EVM-PDK provides power and a communications card complete with a graphical user (...)

Features
  • Hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS7066 SAR ADC
  • USB powered; no external power supply required
  • Includes precision ADC motherboard (PAMBoard) development kit that provides a convenient communication interface over a USB for power (...)

Design tools & simulation

SIMULATION MODELS Download
SBAM441.ZIP (71 KB) - IBIS Model
SIMULATION TOOLS 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
  • (...)
SIMULATION TOOLS 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 TOOLS 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 TOOLS 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
  • (...)
CALCULATION TOOLS Download
SBAR007.ZIP (36 KB)

CAD/CAE symbols

Package Pins Download
DSBGA (YBH) 16 View options

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