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ADS9817

ACTIVE

Eight-channel, 18-bit, 2-MSPS/ch dual simultaneous-sampling ADC with integrated analog front end

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Data sheet

ADS9817

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 18 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type Enhanced SPI, Serial CMOS Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 12 Input voltage range (min) (V) -12 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 220 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 92.3 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
Resolution (Bits) 18 Sample rate (max) (ksps) 2000 Number of input channels 8 Interface type Enhanced SPI, Serial CMOS Architecture SAR Input type Differential, Single-ended Multichannel configuration Multiplexed Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 12 Input voltage range (min) (V) -12 Features Over-Voltage Protection, PGA Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 220 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 92.3 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
VQFN (RSH) 56 49 mm² 7 x 7
  • 8-channel, 18-bit ADC with analog front-end:
    • Dual, simultaneous sampling: 4 × 1 channels
    • Constant 1MΩ input impedance front-end
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • ±12V common-mode voltage range
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 21kHz and 400kHz
  • Integrated low-drift precision references
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.5LSB, INL: ±0.8LSB
    • SNR: 92dB, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C
  • 8-channel, 18-bit ADC with analog front-end:
    • Dual, simultaneous sampling: 4 × 1 channels
    • Constant 1MΩ input impedance front-end
  • Programmable analog input ranges:
    • ±12V, ±10V, ±7V, ±5V, ±3.5V, and ±2.5V
    • Single-ended and differential inputs
    • ±12V common-mode voltage range
    • Input overvoltage protection: Up to ±18V
  • User-selectable analog input bandwidth:
    • 21kHz and 400kHz
  • Integrated low-drift precision references
    • ADC reference: 4.096V
    • 2.5V reference output for external circuits
  • Excellent AC and DC performance at full-throughput:
    • DNL: ±0.5LSB, INL: ±0.8LSB
    • SNR: 92dB, THD: –113dB
  • Power supply:
    • Analog and digital: 5V and 1.8V
    • Digital interface: 1.2V to 1.8V
  • Temperature range: –40°C to +125°C

The ADS981x is an 8-channel data acquisition (DAQ) system based on a dual, simultaneous-sampling, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS981x features a complete analog front-end for each channel with an input clamp protection circuit, 1MΩ input impedance, and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The ADS981x can be configured to accept unipolar or bipolar inputs with up to a ±12V common-mode voltage.

The device also features a 4.096V reference for the ADC and a 2.5V reference output for use with external circuits. A digital interface supporting 1.2V to 1.8V operation enables the ADS981x to be used without external voltage level translators.

The ADS981x is an 8-channel data acquisition (DAQ) system based on a dual, simultaneous-sampling, 18-bit successive approximation register (SAR) analog-to-digital converter (ADC). The ADS981x features a complete analog front-end for each channel with an input clamp protection circuit, 1MΩ input impedance, and a programmable gain amplifier (PGA) with user-selectable bandwidth options. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The ADS981x can be configured to accept unipolar or bipolar inputs with up to a ±12V common-mode voltage.

The device also features a 4.096V reference for the ADC and a 2.5V reference output for use with external circuits. A digital interface supporting 1.2V to 1.8V operation enables the ADS981x to be used without external voltage level translators.
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* Data sheet ADS981x 18-Bit, 2-MSPS/Ch, Dual, Simultaneous-Sampling ADC With Integrated Analog Front-End datasheet (Rev. B) PDF | HTML 10 Oct 2024
Application brief Measurement Cards for Semiconductor Automatic Test Equipment (ATE) PDF | HTML 28 Apr 2025
Application brief Precision ADC for Measuring Analog Outputs of Parametric Measurement Unit (PMU) (Rev. B) PDF | HTML 14 Jan 2025
Technical article 如何監控自動化測試儀和編碼器 PDF | HTML 14 May 2024
Technical article 자동화된 테스터 및 인코더를 모니터링하는 방법 PDF | HTML 14 May 2024
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