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ADS8328

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2.7V-to-5.5V 16-Bit 500kSPS Serial ADC With 2-to-1 Multiplexer

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Data sheet

ADS8328

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 2 Interface type SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 10.6 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 SNR (dB) 91 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
Resolution (Bits) 16 Sample rate (max) (ksps) 500 Number of input channels 2 Interface type SPI Architecture SAR Input type Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External Input voltage range (max) (V) 5.5 Input voltage range (min) (V) 0 Features Daisy-Chainable, Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 10.6 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 5.5 SNR (dB) 91 Digital supply (min) (V) 1.65 Digital supply (max) (V) 5.5
TSSOP (PW) 16 32 mm² 5 x 6.4 VQFN (RSA) 16 16 mm² 4 x 4
  • 2.7-V to 5.5-V Analog Supply, Low Power:
    • 10.6 mW (500 kHz, +VA = 2.7 V,
      +VBD = 1.8 V)
  • 500-kHz Sampling Rate
  • Excellent DC Performance
    • ±1.5 LSB Typ, ±2 LSB Max INL
    • ±0.6 LSB Typ, ±1 LSB Max DNL
    • 16-Bit NMC Over Temperature
    • ±0.5 mV Max Offset Error at 2.7 V
    • ±1 mV Max Offset Error at 5 V
  • Excellent AC Performance at fI = 10 kHz with 91 dB SNR, 100 dB SFDR, –96 dB THD
  • Built-In Conversion Clock (CCLK)
  • 1.65 V to 1.5×(+VA) I/O Supply
    • SPI/DSP Compatible Serial
    • SCLK up to 50 MHz
  • Comprehensive Power-Down Modes:
    • Deep Power-Down
    • Nap Power-Down
    • Auto Nap Power-Down
  • Unipolar Input Range: 0 V to VREF
  • Software Reset
  • Global CONVST (Independent of CS)
  • Programmable Status/Polarity EOC/INT
  • 16-Pin 4×4 QFN or 16-Pin TSSOP Packages
  • Multi-Chip Daisy Chain Mode
  • Programmable TAG Bit Output
  • Auto/Manual Channel Select Mode
  • APPLICATIONS
    • Communications
    • Transducer Interface
    • Medical Instruments
    • Magnetometers
    • Industrial Process Control
    • Data Acquisition Systems
    • Automatic Test Equipment
    • 2.7-V to 5.5-V Analog Supply, Low Power:
      • 10.6 mW (500 kHz, +VA = 2.7 V,
        +VBD = 1.8 V)
    • 500-kHz Sampling Rate
    • Excellent DC Performance
      • ±1.5 LSB Typ, ±2 LSB Max INL
      • ±0.6 LSB Typ, ±1 LSB Max DNL
      • 16-Bit NMC Over Temperature
      • ±0.5 mV Max Offset Error at 2.7 V
      • ±1 mV Max Offset Error at 5 V
    • Excellent AC Performance at fI = 10 kHz with 91 dB SNR, 100 dB SFDR, –96 dB THD
    • Built-In Conversion Clock (CCLK)
    • 1.65 V to 1.5×(+VA) I/O Supply
      • SPI/DSP Compatible Serial
      • SCLK up to 50 MHz
    • Comprehensive Power-Down Modes:
      • Deep Power-Down
      • Nap Power-Down
      • Auto Nap Power-Down
    • Unipolar Input Range: 0 V to VREF
    • Software Reset
    • Global CONVST (Independent of CS)
    • Programmable Status/Polarity EOC/INT
    • 16-Pin 4×4 QFN or 16-Pin TSSOP Packages
    • Multi-Chip Daisy Chain Mode
    • Programmable TAG Bit Output
    • Auto/Manual Channel Select Mode
  • APPLICATIONS
    • Communications
    • Transducer Interface
    • Medical Instruments
    • Magnetometers
    • Industrial Process Control
    • Data Acquisition Systems
    • Automatic Test Equipment

    The ADS8327 is a low power, 16-bit, 500-kSPS analog-to-digital converter with a unipolar input. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold.

    The ADS8328 is based on the same core and includes a 2-to-1 input MUX with programmable option of TAG bit output. Both the ADS8327 and ADS8328 offer a high-speed, wide voltage serial interface and are capable of chain mode operation when multiple converters are used.

    These converters are available in a 16-lead TSSOP or 4×4 QFN packages and are fully specified for operation over the industrial –40°C to +85°C temperature range.

    The ADS8327 is a low power, 16-bit, 500-kSPS analog-to-digital converter with a unipolar input. The device includes a 16-bit capacitor-based SAR A/D converter with inherent sample and hold.

    The ADS8328 is based on the same core and includes a 2-to-1 input MUX with programmable option of TAG bit output. Both the ADS8327 and ADS8328 offer a high-speed, wide voltage serial interface and are capable of chain mode operation when multiple converters are used.

    These converters are available in a 16-lead TSSOP or 4×4 QFN packages and are fully specified for operation over the industrial –40°C to +85°C temperature range.
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    Technical documentation

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    Top documentation Type Title Format options Date
    * Data sheet Low Power, 16-Bit, 500-kHz, Single/Dual Unipolar Input, ADC w/Serial I/F datasheet (Rev. E) 27 Jan 2011
    White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016
    E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
    Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011
    Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
    More literature Using the ADS8328 in Auto Trigger and Auto Channel Mode w/the C6713 DSP 14 Dec 2006

    Design & development

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    Simulation model

    ADS8328 IBIS Model

    SLAM097.ZIP (80 KB) - IBIS Model
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    Calculation tool

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    JITTER-SNR-CALC — Jitter and SNR calculator

    JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.

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    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.
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    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 (...)
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    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 (...)
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    TSSOP (PW) 16 Ultra Librarian
    VQFN (RSA) 16 Ultra Librarian
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