ADS8509 16-Bit 250kHz CMOS Analog-to-Digital Converter With Serial Interface 2.5V Internal Reference | TI.com

ADS8509 (ACTIVE)

16-Bit 250kHz CMOS Analog-to-Digital Converter With Serial Interface 2.5V Internal Reference

 

Description

The ADS8509 is a complete 16-bit sampling analog-to-digital (A/D) converter using state-of-the-art CMOS structures. It contains a complete 16-bit, capacitor-based, successive approximation register (SAR) A/D converter with sample-and-hold, reference, clock, and a serial data interface. Data can be output using the internal clock or can be synchronized to an external data clock. The ADS8509 also provides an output synchronization pulse for ease of use with standard DSP processors.

The ADS8509 is specified at a 250-kHz sampling rate over the full temperature range. Precision resistors provide various input ranges including ±10 V and 0 V to 5 V, while the innovative design allows operation from a single +5-V supply with power dissipation under 100 mW.

The ADS8509 is available in 20-pin SO and 28-pin SSOP packages, both fully specified for operation over the industrial –40°C to 85°C temperature range.

Features

  • 250-kHz Sampling Rate
  • 4-V, 5-V, 10-V, ±3.33-V, ±5-V, and ±10-V Input Ranges
  • ±2 LSB Max INL
  • ±1 LSB Max DNL, 16-Bit No Missing Codes
  • SPI Compatible Serial Output with Daisy-Chain (TAG) Feature
  • Single 5-V Supply
  • Pin-Compatible with ADS7809 (Low Speed) and 12-Bit ADS8508/7808
  • Uses Internal or External Reference
  • 70-mW Typ Power Dissipation at 250 KSPS
  • 20-Pin SO and 28-Pin SSOP Packages
  • Simple DSP Interface
  • APPLICATIONS
    • Industrial Process Control
    • Data Acquisition Systems
    • Digital Signal Processing
    • Medical Equipment
    • Instrumentation

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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
ADS8509
16    
250    
1    
SPI    
-40 to 85    
SOIC | 20
SSOP | 28    
12.70 | 100u    
155    
20SOIC: 132 mm2: 10.3 x 12.8 (SOIC | 20)
28SSOP: 54 mm2: 5.3 x 10.2 (SSOP | 28)    
SAR    
Single-Ended    
   
Ext
Int    
Daisy-Chainable
Oscillator    
10    
-10    
4.75    
5.25    
4.75    
5.25    
2    
88    
88    
-98    
Catalog    

Design tool

WEBENCH® Designer ADS8509