ADS8866 16-Bit Analog-to-Digital Converters

ADS8866 16-Bit Analog-to-Digital Converters

Texas Instruments' ADS8866 is a 16-bit, 100 kSPS, single-ended input, analog-to-digital converter (ADC). The device operates with a 2.5 V to 5 V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD).

The device is SPI-compatible and supports daisy-chain operation for cascading multiple devices.

The device supports unipolar single-ended analog inputs in the range of -0.1 V to VREF +0.1 V.

Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS8866 excellent for lower-speed applications.

TI Design Link: Motor Monitoring Using Wireless Vibration Sensor Reference Design Enabling Preventive Maintenance

  • Sample rate: 100 kHz
  • No latency output
  • Unipolar, single-ended input range: 0 to +VREF
  • SPI-compatible with daisy-chain option
  • Low-power dissipation:
    • 0.7 mW at 100 kSPS
    • 70 µW at 10 kSPS
  • Power-down current (AVDD): 50 nA
  • Full-scale step settling to 16-bits: 1200 ns
  • Packages: MSOP-10 and SON-10
  • Excellent AC and DC performance:
    • SNR: 93 dB, THD: -108 dB
    • INL: ±1.0 LSB (typ.), ±2.0 LSB (max.)
    • DNL: ±1.0 LSB (max.), 16-bit NMC
  • Wide operating range:
    • AVDD: 2.7 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (independent of AVDD)
    • REF: 2.5 V to 5 V (independent of AVDD)
    • Operating temperature: -40°C to +85°C
  • Automation test equipment (ATE)
  • Instrumentation and process controls
  • Precision medical equipment
  • Low-power, battery-operated instruments