ADS8321 16-Bit, High-Speed, Micropower Sampling Analog-to-Digital Converter (ADC) | TI.com

ADS8321 (ACTIVE)

16-Bit, High-Speed, Micropower Sampling Analog-to-Digital Converter (ADC)

 

Description

The ADS8321 is a 16-bit sampling analog-to-digital converter (ADC) with tested specifications over a 4.75V to 5.25V supply range. It requires very little power even when operating at the full 100kHz data rate. At lower data rates, the high speed of the device enables it to spend most of its time in the power-down mode—the average power dissipation is less than 1mW at 10kHz data rate.

The ADS8321 also features a synchronous serial (SPI/SSI compatible) interface, and a differential input. The reference voltage can be set to any level within the range of 500mV to VCC/2.

Ultra-low power and small size make the ADS8321 ideal for portable and battery-operated systems. It is also a perfect fit for remote data acquisition modules, simultaneous multi-channel systems, and isolated data acquisition. The ADS8321 is available in an MSOP-8 package.

Features

  • BIPOLAR INPUT RANGE
  • 100kHz SAMPLING RATE
  • MICRO POWER:
  • 4.5mW at 100kHz
  • 1mW at 10kHz
  • POWER DOWN: 3&mirco;A max
  • MSOP-8 PACKAGE
  • PIN-COMPATIBLE TO ADS7816 AND ADS7822
  • SERIAL (SPI/SSI) INTERFACE
  • APPLICATIONS
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • SIMULTANEOUS SAMPLING, MULTI-CHANNEL SYSTEMS
    • INDUSTRIAL CONTROLS
    • ROBOTICS
    • VIBRATION ANALYSIS

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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
ADS8321 ADS8320 ADS8324 ADS8325
16     16     14     16    
100     100     50     100    
1     1     1     1    
Serial
SPI    
Serial
SPI    
Serial
SPI    
Serial
SPI    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
VSSOP | 8     VSSOP | 8     VSSOP | 8     SON | 8
VSSOP | 8    
5.15 | 1ku     5.75 | 1ku     4.15 | 1ku     6.60 | 1ku    
5.5     4.5     2.5     2.25    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     See datasheet (SON)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
SAR     SAR     SAR     SAR    
Differential
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential     Pseudo-Differential
Single-Ended    
   
   
   
   
Ext     Ext     Ext     Ext    
   
   
   
   
2.6     5.25     1.8     5.5    
-2.6     0     -1.8     0    
4.75     2.7     1.8     2.7    
5.25     5.25     3.6     5.5    
4.75     2.7     1.8     2.7    
5.25     5.25     3.6     5.5    
7.9     7.9     2     4    
84     84     78     91    
87     92     78     91    
-86     -86     -86     -106    
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