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ADS7066

ACTIVE

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

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Data sheet

ADS7066

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Sample rate (max) (ksps) 250 Number of input channels 8 Interface type SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Daisy-Chainable, GPIO, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 4 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 5.5 SNR (dB) 86 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 250 Number of input channels 8 Interface type SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Daisy-Chainable, GPIO, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 4 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 5.5 SNR (dB) 86 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
WQFN (RTE) 16 9 mm² (3 mm × 3 mm) DSBGA (YBH) 16 2.56 mm² (0 mm × 0 mm)
  • Small solution size:
    • DSBGA and WQFN packages
    • 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, and auto-sequence mode
  • Excellent AC and DC performance:
    • SNR: 91.9 dB, THD: –100 dB
    • Improved SNR with programmable averaging filters
    • INL: ±1 LSB, 16-bit no missing codes
    • Internal calibration improves offset and drift
    • 250 kSPS sample rate with no latency
  • Wide operating range:
    • ADC input range: 0 V to V REF and 2 × V REF
    • 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
  • Small solution size:
    • DSBGA and WQFN packages
    • 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, and auto-sequence mode
  • Excellent AC and DC performance:
    • SNR: 91.9 dB, THD: –100 dB
    • Improved SNR with programmable averaging filters
    • INL: ±1 LSB, 16-bit no missing codes
    • Internal calibration improves offset and drift
    • 250 kSPS sample rate with no latency
  • Wide operating range:
    • ADC input range: 0 V to V REF and 2 × V REF
    • 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

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 device family includes the ADS7067 (800 kSPS) and the ADS7066 (250 kSPS) speed variants.

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 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.

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 device family includes the ADS7067 (800 kSPS) and the ADS7066 (250 kSPS) speed variants.

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 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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ADS7067 ACTIVE Eight-channel, 800-kSPS, 16-bit SAR analog-to-digital converter (ADC) with GPIOs and SPI ADS7067 is a higher-speed variant of ADS7066.

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ADS7066 Small, 8-Channel, 16-Bit, 250-kSPS SAR ADC With GPIOs datasheet (Rev. C) PDF | HTML Sep 15, 2023
Application note A Simple, Java-Based CRC Calculator PDF | HTML Mar 4, 2026
Product overview High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End PDF | HTML Apr 10, 2025
Application brief Implementation of CRC for ADS7066 PDF | HTML Aug 20, 2020
Application brief Resolution-Boosting ADS7066 Using Programmable Averaging Filter PDF | HTML Apr 27, 2020

Design & development

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

Evaluation board

ADS7066EVM-PDK — ADS7066 performance demonstration kit for eight-channel, 250-kSPS, 16-bit, internal-reference ADC

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 (...)

User guide: PDF
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Support software

ADS7066-C-EXAMPLE-CODE — ADS7066 example C code

Expedite your embedded design using this example C code for the ADS7066 product family
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Simulation model

ADS7066 IBIS Model

SBAM441.ZIP (71 KB) - IBIS model
Supported products & hardware
Simulation model

ADS7066 TINA-TI Reference Design

SBAM445.TSC (22 KB) - TINA-TI reference design
Supported products & hardware
Calculation tool

ANALOG-ENGINEER-CALC — PC software 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 operational-amplifier (...)

Supported products & hardware
Calculation tool

SBAR007 — ADS7066 CRC Calculator

Supported products & hardware
Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

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 reference voltage, and the tool will list up to two voltage reference recommendations.
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
WQFN (RTE) 16 Ultra Librarian
DSBGA (YBH) 16 Ultra Librarian
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