ADS7828 12-Bit, 8-Channel SAR ADC with Internal Reference and I2C Interface | TI.com

ADS7828 (ACTIVE) 12-Bit, 8-Channel SAR ADC with Internal Reference and I2C Interface

 

Automotive qualified version available, see ADS7828-Q1.

Description

The ADS7828 is a single-supply, low-power, 12-bit data acquisition device that features a serial I2C interface and an 8-channel multiplexer. The Analog-to-Digital (A/D) converter features a sample-and-hold amplifier and internal, asynchronous clock. The combination of an I2C serial, 2-wire interface and micropower consumption makes the ADS7828 ideal for applications requiring the A/D converter to be close to the input source in remote locations and for applications requiring isolation. The ADS7828 is available in a TSSOP-16 package.

Features

  • 8-CHANNEL MULTIPLEXER
  • 50kHz SAMPLING RATE
  • NO MISSING CODES
  • 2.7V TO 5V OPERATION
  • INTERNAL 2.5V REFERENCE
  • I2C INTERFACE SUPPORTS:
    Standard, Fast, and High-Speed Modes
  • TSSOP-16 PACKAGE
  • APPLICATIONS
    • VOLTAGE-SUPPLY MONITORING
    • ISOLATED DATA ACQUISITION
    • TRANSDUCER INTERFACES
    • BATTERY-OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION

I2C is a trademark of Koninklijke Philps Electronics N.V. All other trademarks are the property of their respective owners.

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
ADS7828 Order now 12     50     8     I2C     -40 to 85     TSSOP | 16     3.58 | 1ku     0.675     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
    5.25     0     2.7     5.25     2.7     5.25     1     72     -82     Catalog    
ADC128D818 Order now 12     0.082     8     I2C     -40 to 125     TSSOP | 16     1.95 | 1ku     2     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     Delta-Sigma     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Oscillator
Temp Sensor    
5.5     0     3     5.5     3     5.5     1         Catalog    
ADS7028 Order now 12     1000     8     Enhanced SPI     -40 to 85     WQFN | 16     2.70 | 1ku       16WQFN: 9 mm2: 3 x 3 (WQFN | 16)     SAR     Single-Ended     Multiplexed     Supply     Digital Window Comparator
GPIO
Oscillator
Small Size    
5.5     0     2.35     5.5     1.65     5.5     2     69       Catalog    
ADS7038 Order now 12     1000     8     Enhanced SPI     -40 to 125     WQFN | 16