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

 

Automotive qualified version available, see ADS7822-Q1.

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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WEBENCH® Designer ADS7822



Parametrics

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Part number Order 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) SNR (dB) THD (Typ) (dB) Rating
ADS7822 Order now 12     200     1     Serial     -40 to 85     SOIC | 8
VSSOP | 8    
1.66 | 1ku     1.6     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
SAR     Pseudo-Differential
Single-Ended    
    Ext         5.25     0     4.75     5.25     4.75     5.25     0.75     71     -82     Catalog    
ADS1286 Samples not available 12     20     1     SPI     -40 to 85     SOIC | 8     3.23 | 1ku     1.25     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)     SAR     Differential         Ext         5.25     0     4.5     5.25     4.5     5.25     2     72     -85     Catalog    
ADS7816 Samples not available 12     200     1     Serial     -40 to 85     SOIC | 8
VSSOP | 8    
2.36 | 1ku     1.9     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
SAR     Pseudo-Differential
Single-Ended    
    Ext         5.25     0     4.5     5.25     4.5     5.25     2     72     -84     Catalog    
ADS7817 Order now 12     200     1