ADS8481 18 Bit 1MSPS parallel ADC W/Ref | TI.com

ADS8481 (ACTIVE)

18 Bit 1MSPS parallel ADC W/Ref

 

Description

The ADS8481 is an 18-bit, 1-MSPS A/D converter with an internal 4.096-V reference and a pseudo-differential unipolar single-ended input. The device includes a 18-bit capacitor-based SAR A/D converter with inherent sample and hold. The ADS8481 offers a full 18-bit interface, a 16-bit option where data is read using two read cycles, or an 8-bit bus option using three read cycles.

The ADS8481 is available in a 7x7 QFN package and is characterized over the industrial -40°C to 85°C temperature range.

Features

  • 0 to 1 MSPS Sampling Rate
  • 18-Bit NMC Ensured Over Temperature
  • Low ±0.1 mV Offset Error
  • Low 0.2 ppm/°C Offset Error Temperature Drift
  • Low 0.6 ppm/°C Gain Error Temperature Drift
  • Zero Latency
  • Low Power: 220 mW at 1 MSPS
  • Unipolar Single-Ended Input Range: 0 V to Vref
  • Onboard Reference
  • Onboard Reference Buffer
  • High-Speed Parallel Interface
  • Wide Digital Supply 2.7 V ~ 5.25 V
  • 8-/16-/18-Bit Bus Transfer
  • 7x7 QFN Package
  • APPLICATIONS
    • Medical Instruments
    • Optical Networking
    • Transducer Interface
    • High Accuracy Data Acquisition Systems
    • Magnetometers

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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
ADS8481
18    
1000    
1    
Parallel    
-40 to 85    
VQFN | 48    
16.70 | 1ku    
220    
48VQFN: 49 mm2: 7 x 7 (VQFN | 48)    
SAR    
Pseudo-Differential
Single-Ended    
   
Ext
Int    
Oscillator    
4.1    
0    
4.75    
5.25    
2.7    
5.25    
3.5    
93    
94    
-112    
Catalog    

Design tool

WEBENCH® Designer ADS8481