ADS7822 12-Bit, 200kSPS Micro Power Sampling Analog-To-Digital Converter | TI.com

ADS7822 (ACTIVE)

12-Bit, 200kSPS Micro Power Sampling Analog-To-Digital Converter

 

Description

The ADS7822 is a 12-bit sampling analog-to-digital (A/D) converter with ensured specifications over a 2.7V to 5.25V supply range. It requires very little power even when operating at the full 200kHz rate. At lower conversion rates, the high speed of the device enables it to spend most of its time in the power-down mode—the power dissipation is less than 60µW at 7.5kHz.

The ADS7822 also features operation from 2.0V to 5V, a synchronous serial interface, and a pseudo-differential input. The reference voltage can be set to any level within the range of 50mV to VCC.

Ultra low power and small size make the ADS7822 ideal for battery-operated systems. It is also a perfect fit for remote data-acquisition modules, simultaneous multichannel systems, and isolated data acquisition. The ADS7822 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.

Features

  • 200kHz Sampling Rate
  • microPower:
      1.6mW at 200kHz
      0.54mW at 75kHz
      0.06mW at 7.5kHz
  • Power Down: 3µA max
  • Mini-DIP-8, SO-8, and MSOP-8 Packages
  • Pseudo-Differential Input
  • Serial Interface
  • APPLICATIONS
    • Battery-Operated Systems
    • Remote Data Acquisition
    • Isolated Data Acquisition
    • Simultaneous Sampling,Multichannel Systems

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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
ADS7822 ADS1286 ADS7816 ADS7817 ADS7822-Q1 ADS7826 ADS7827 ADS7829
12     12     12     12     12     10     8     12    
200     20     200     200     200     200     250     125    
1     1     1     1     1     1     1     1    
Serial     SPI     Serial     Serial     Serial     SPI     I2C     SPI    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
SOIC | 8
VSSOP | 8    
SOIC | 8     SOIC | 8
VSSOP | 8    
SOIC | 8
VSSOP | 8    
VSSOP | 8     SON | 8     SON | 8     SON | 8    
1.63 | 1ku     2.94 | 1ku     2.31 | 1ku     2.05 | 1ku     1.91 | 1ku     1.68 | 1ku     1.00 | 1ku     1.50 | 1ku    
1.6     1.25     1.9     2.3     0.6     0.8     0.6     0.6    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)     8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8SOIC: 29 mm2: 6 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     See datasheet (SON)     See datasheet (SON)     See datasheet (SON)    
SAR     SAR     SAR     SAR     SAR     SAR     SAR     SAR    
Pseudo-Differential
Single-Ended    
Differential     Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
Pseudo-Differential
Single-Ended    
   
   
   
   
   
   
   
   
Ext     Ext     Ext     Ext     Ext     Ext     Ext     Ext    
   
   
   
   
   
   
   
   
5.25