ADS8319 - Precision 16-Bit SAR Analog-to-Digital Converter (ADC) With SPI Interface

The ADS8319 device is a 16-bit, 500-kSPS, analog-to-digital converter (ADC) that operates with a 2.25-V to 5.5-V external reference. The device includes a capacitor-based, successive-approximation register (SAR) ADC with inherent sample and hold.

The device includes a 50-MHz, SPI-compatible serial interface. The interface is designed to support daisy-chaining or cascading of multiple devices. Furthermore, a Busy Indicator makes synchronizing with the digital host easy.

The device unipolar, single-ended input range supports an input swing of 0 V to +V_REF.

Device operation is optimized for very-low power operation and the power consumption directly scales with speed. This feature makes the device attractive for lower-speed applications. The device is available in 10-pin VSSOP and VSON packages.

• 500-kHz Sample Rate
• 16-Bit Resolution
• Zero Latency at Full Speed
• Unipolar, Single-Ended Input Range: 0 V to V_REF
• SPI-Compatible Serial Interface With Daisy-Chain Option
• Excellent Performance:
  • 93.6-dB SNR (Typical) at 10-kHz Input
  • –106-dB THD (Typical) at 10-kHz Input
  • ±1.5-LSB (Maximum) INL
  • ±1-LSB (Maximum) DNL
• Low Power Dissipation: 18 mW (Typical) at 500 kSPS
• Power Scales Linearly with Speed: 3.6 mW / 100 kSPS
• Power Dissipation During Power-Down State: 0.25 µW (Typical)
• 10-Pin VSSOP and VSON Packages