ADS8422 16 Bit 4MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input | TI.com

ADS8422 (ACTIVE)

16 Bit 4MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input

 

Description

The ADS8422 is a 16-bit, 4-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based multi-bit SAR A/D converter with inherent sample and hold. This converter includes a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary.

The ADS8422 has a fully differential, pseudo-bipolar input. It is available in a 48-lead TQFP package and is characterized over the industrial -40°C to +85°C temperature range.

Features

  • Fully Differential Input with Pseudo-Bipolar Input Range -4 V to +4 V
  • 16-Bit NMC at 4 MSPS
  • 1 LSB INL Typ
  • 92dB SNR, -102dB THD Typ with 100-kHz Input
  • Internal 4.096-V Reference and Reference Buffer
  • REFIN/2 Available for Setting Analog Input Common-Mode Voltage
  • Zero Latency
  • High-Speed Parallel Interface
  • Single Supply Operation Capability
  • Low Power: 155 mW at 4 MHz Typ,Flexible Power-Down Scheme
  • Pin-Out Similar to ADS8412/8402
  • 48-Pin 9×9 TQFP Package
  • APPLICATIONS
    • DWDM
    • Instrumentation
    • High-Speed, High-Resolution, Zero Latency Data Acquisition Systems
    • Transducer Interface
    • Medical Instruments
    • Spectrum Analysis
    • ATE

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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
ADS8422
16    
4000    
1    
Parallel    
-40 to 85    
TQFP | 48    
25.63 | 1ku    
155    
48TQFP: 81 mm2: 9 x 9 (TQFP | 48)    
SAR    
Differential    
   
Ext
Int    
Oscillator    
4.1    
4.1    
4.75    
5.25    
2.7    
5.25    
2    
92.5    
93    
-114    
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