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ADS7066 ACTIVE Eight-channel, 250-kSPS, 16-bit analog-to-digital converter with internal reference, GPIOs and SPI Small size

Product details

Resolution (Bits) 16 Number of input channels 8 Sample rate (Max) (kSPS) 250 Interface type SPI, Enhanced SPI Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5 Input range (Min) (V) 0 Features Comparator Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 15 Analog voltage AVDD (Min) (V) 3 SNR (dB) 92 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 0.8 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.5
Resolution (Bits) 16 Number of input channels 8 Sample rate (Max) (kSPS) 250 Interface type SPI, Enhanced SPI Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5 Input range (Min) (V) 0 Features Comparator Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 15 Analog voltage AVDD (Min) (V) 3 SNR (dB) 92 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 0.8 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.5
VQFN (RHB) 32 25 mm² 5 x 5
  • Compact low-power data acquisition system:
    • MUX breakout enables single external driver amplifier
    • 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
  • Multiplexer with channel 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
    • False trigger avoidance with programmable hysteresis
  • Enhanced-SPI digital interface:
    • 1-MSPS throughput with 16-MHz SCLK
    • High-speed, 70-MHz digital interface
  • Wide operating range:
    • External VREF input range: 2.5 V to 5 V
    • AVDD from 3 V to 5.5 V
    • DVDD from 1.65 V to 5.5 V
    • –40°C to +125°C temperature range
  • Compact low-power data acquisition system:
    • MUX breakout enables single external driver amplifier
    • 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
  • Multiplexer with channel 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
    • False trigger avoidance with programmable hysteresis
  • Enhanced-SPI digital interface:
    • 1-MSPS throughput with 16-MHz SCLK
    • High-speed, 70-MHz digital interface
  • Wide operating range:
    • External VREF input range: 2.5 V to 5 V
    • AVDD from 3 V to 5.5 V
    • DVDD from 1.65 V to 5.5 V
    • –40°C to +125°C temperature range

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

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

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Technical documentation

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Type Title Date
* Data sheet ADS816x 8-Channel, 16-Bit, 1-MSPS, SAR ADC With Direct Sensor Interface datasheet (Rev. C) 05 Nov 2019
Application note Designing a Cost-Optimized DAQ Solution (Rev. B) 24 Jun 2019

Design & development

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

Evaluation board

ADS8168EVM-PDK — ADS8168 8-channel 16-bit 1MSPS SAR ADC evaluation module performance demonstration kit (PDK)

The ADS8168 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS8168 successive-approximation register (SAR) analog-to-digital converter (ADC). The ADS8168EVM-PDK includes the ADS8168EVM board, the precision host interface (PHI) (...)

Simulation model

ADS8166 IBIS Model

SBAM392.ZIP (45 KB) - IBIS Model
Simulation model

ADS8166 TINA-TI Transient Spice Model

SBAM393.ZIP (10 KB) - TINA-TI Spice Model
Simulation model

ADS8166 TINA-TI Transient Reference Design

SBAM394.TSC (391 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 (...)
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Design tool

ADC-TO-VREF-SELECT — ADC to series voltage reference selection tool

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired input voltage, and the tool will list the top three voltage reference recommendations. There is also an option to use (...)
Package Pins Download
VQFN (RHB) 32 View options

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