ADS7230 Low-Power, 12-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface | TI.com

ADS7230 (ACTIVE) Low-Power, 12-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface

 

Description

The ADS7229 is a low-power, 12-bit, 1MSPS analog-to-digital converter (ADC) with a unipolar input. The device includes a 12-bit capacitor-based successive approximation register (SAR) ADC with inherent sample-and-hold.

The ADS7230 is based on the same core and includes a 2-to-1 input MUX with a programmable TAG bit output option. Both the ADS7229 and ADS7230 offer a high-speed, wide voltage serial interface and are capable of daisy-chain mode operation when multiple converters are used.

These devices 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:
    • ±0.15LSB Typ, ±0.5LSB Max INL
    • ±0.12LSB Typ, ±0.5LSB Max DNL
    • ±0.8mV Max Offset Error at 3V
    • ±1.25mV Max Offset Error at 5V
  • Excellent AC Performance at fi = 10kHz with 73.9dB SNR, 93.4dB SFDR, -88.5dB 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 (ADS7230)
  • APPLICATIONS
    • Communications
    • Transducer Interface
    • Medical Instruments
    • Magnetometers
    • Industrial Process Control
    • Data Acquisition Systems
    • Automatic Test Equipment

SPI is a trademark of Motorola, Inc.
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
ADS7230 Order now 12     1000     2     Serial     -40 to 85     QFN | 16
TSSOP | 16    
3.15 | 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    
Multiplexed     Ext     Daisy-Chainable
Oscillator    
5.5     0     2.7     5.5     1.65     5.5     0.5     73.9     -88.5     Catalog    
ADS7229 Samples not available 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     Catalog    
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    
ADS7280 Order now 14