ADS7279 Low-Power, 14-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface | TI.com

ADS7279 (ACTIVE)

Low-Power, 14-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface

 

Description

The ADS7279 is a low-power, 14-bit, 1MSPS analog-to-digital converter (ADC) with a unipolar input. The device includes a 14-bit, capacitor-based successive approximation register (SAR) ADC with inherent sample-and-hold.

The ADS7280 is based on the same core and includes a 2-to-1 input MUX with a programmable TAG bit output option. Both the ADS7279 and ADS7280 offer a high-speed, wide voltage serial interface, and are capable of daisy-chain mode operation when multiple converters are used.

These converters are available in 4 × 4 QFN and TSSOP-16 packages, and are fully specified for operation over the industrial -40°C to +85°C temperature range.

Features

  • 2.7V to 5.5V Analog Supply, Low Power:
    • 13.7mW (1MHz, +VA = 3V, +VBD = 1.8V)
  • 1MHz Sampling Rate 3V ≤ +VA ≤ 5.5V,
    900kHz Sampling Rate 2.7V ≤ +VA ≤ 3V
  • Excellent DC Performance:
    • ±0.4LSB Typ, ±1.0LSB Max INL
    • ±0.4LSB Typ, ±1.0LSB Max DNL
    • ±0.8mV Max Offset Error at 3V
    • ±1.25mV Max Offset Error at 5V
  • Excellent AC Performance at fi = 10kHz with 85.9dB SNR, 105.3dB SFDR, -100.1dB THD
  • Built-In Conversion Clock (CCLK)
  • 1.65V to 5.5V I/O Supply:
    • SPI/DSP-Compatible Serial Interface
    • SCLK up to 50MHz
  • Comprehensive Power-Down Modes:
    • Deep Power-Down
    • Nap Power-Down
    • Auto Nap Power-Down
  • Unipolar Input Range: 0V to VREF
  • Software Reset
  • Global CONVST (Independent of CS)
  • Programmable Status/Polarity EOC/INT
  • 4 × 4 QFN-16 and TSSOP-16 Packages
  • Multi-Chip Daisy-Chain Mode
  • Programmable TAG Bit Output
  • Auto/Manual Channel Select Mode (ADS7280)
  • APPLICATIONS
    • Communications
    • Transducer Interface
    • Medical Instruments
    • Magnetometers
    • Industrial Process Control
    • Data Acquisition Systems
    • Automatic Test Equipment

WEBENCH® Designer ADS7279



Parametrics

Compare all products in Precision ADCs (<=10MSPS) Email Download to Excel
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
ADS7279 Order now 14     1000     1     Serial     -40 to 85     QFN | 16
TSSOP | 16    
4.20 | 1ku     13.7     16QFN: 16 mm2: 4 x 4 (QFN | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
SAR     Pseudo-Differential
Single-Ended    
   
Ext     Daisy-Chainable
Oscillator    
5.5     0     2.7     5.5     1.65     5.5     1     85.9     -100.1     Catalog    
ADS7056 Order now 14     2500     1     SPI     -40 to 125     X2QFN | 8     2.00 | 1ku     3.5     8X2QFN: 2 mm2: 1.5 x 1.5 (X2QFN | 8)     SAR     Single-Ended    
   
Supply     Small Size     3.6     0     2.35     3.6     1.65     3.6     3     74.9     -85     Catalog    
ADS7229 Order now 12     1000     1     Serial     -40 to 85     QFN | 16
TSSOP | 16    
2.30 | 1ku     13.7     16QFN: 16 mm2: 4 x 4 (QFN | 16)
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    
SAR     Pseudo-Differential
Single-Ended    
   
Ext     Daisy-Chainable
Oscillator    
5.5     0     2.7     5.5     1.65     5.5     0.5     73.9     -88.5