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

ADS8319 (ACTIVE)

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

 

Description

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 +VREF.

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.

Features

  • 500-kHz Sample Rate
  • 16-Bit Resolution
  • Zero Latency at Full Speed
  • Unipolar, Single-Ended Input Range: 0 V to VREF
  • 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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
Number of input channels
Interface
Operating temperature range (C)
Package Group
Approx. price (US$)
Power consumption (Typ) (mW)
Package size: mm2:W x L (PKG)
Architecture
Input type
Multi-channel configuration
Reference mode
Features
Input range (Max) (V)
Input range (Min) (V)
Analog voltage AVDD (Min) (V)
Analog voltage AVDD (Max) (V)
Digital supply (Min) (V)
Digital supply (Max) (V)
INL (Max) (+/-LSB)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADS8319
16    
500    
1    
SPI    
-40 to 85    
VSON | 10
VSSOP | 10    
4.95 | 1ku    
18    
10VSON: 9 mm2: 3 x 3 (VSON | 10)
10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
SAR    
Pseudo-Differential
Single-Ended    
   
Ext    
Daisy-Chainable
Small Size    
5.5    
0    
4.5    
5.5    
2.375    
5.5    
1.5    
93.8    
93.9    
-111    
Catalog    

Design tool

WEBENCH® Designer ADS8319