ADS8331 2.7V-to-5.5V 16-Bit 500kSPS Low-Power Serial Analog-to-Digital Converter (ADC) | TI.com

ADS8331 (ACTIVE) 2.7V-to-5.5V 16-Bit 500kSPS Low-Power Serial Analog-to-Digital Converter (ADC)

 

Description

The ADS8331 is a low-power, 16-bit, 500-k samples-per-second (SPS) analog-to-digital converter (ADC) with a unipolar, 4-to-1 multiplexer (mux) input. The device includes a 16-bit capacitor-based successive approximation register (SAR) ADC with inherent sample and hold.

The ADS8332 is based on the same core and includes a unipolar 8-to-1 input mux. Both devices offer a high-speed, wide-voltage serial interface and are capable of daisy-chain operation when multiple converters are used.

These converters are available in 24-pin, 4 × 4 QFN and 24-pin TSSOP packages and are fully specified for operation over the industrial –40°C to 85°C temperature range.

Features

  • Low-Power, Flexible Supply Range:
    • 2.7-V to 5.5-V Analog Supply
    • 8.7 mW (250 kSPS in Auto-NAP Mode,
      VA = 2.7 V, VBD = 1.65 V)
    • 14.2 mW (500 kSPS, VA = 2.7 V,
      VBD = 1.65 V)
  • Up to 500-kSPS Sampling Rate
  • Excellent DC Performance:
    • ±1.2 LSB Typical, ±2 LSB Maximum INL at
      2.7 V
    • ±0.6 LSB Typical, –1/1.5 LSB Maximum DNL
      at 2.7 V
    • 16-Bit NMC Over Temperature
  • Excellent AC Performance at 5 V, fIN = 1 kHz:
    • 91.5-dB SNR, 101-dB SFDR, –100-dB THD
  • Flexible Analog Input Arrangement:
    • On-Chip 4-/8-Channel Mux With Breakout
    • Auto/Manual Channel Select and Trigger
  • Other Hardware Features:
    • On-Chip Conversion Clock (CCLK)
    • Software/Hardware Reset
    • Programmable Status/Polarity EOC/INT
    • Daisy-Chain Mode
    • Global CONVST (Independent of CS)
    • Deep, Nap, and Auto-NAP Powerdown Modes
    • SPI™/DSP Compatible Serial Interface
    • Separate I/O Supply: 1.65 V to VA
    • SCLK up to 40 MHz (VA = VBD = 5 V)
  • 24-Pin 4-mm × 4-mm VQFN and 24-Pin TSSOP
    Packages

WEBENCH® Designer ADS8331



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
ADS8331 Order now 16     500     4     SPI     -40 to 85     TSSOP | 24
VQFN | 24    
5.25 | 1ku     14.2     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext     Daisy-Chainable     4.2     0     2.7     5.5     1.65     5.5     2     91.5     -101     Catalog    
ADS8166 Order now 16     250     8     Enhanced SPI
SPI    
-40 to 125     VQFN | 32     4.05 | 1ku     15     32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Comparator     5     0     3     5.5     1.65     5.5     0.8     92     -110     Catalog    
ADS8167 Order now 16     500     8     Enhanced SPI
SPI    
-40 to 125     VQFN | 32     6.55 | 1ku       32VQFN: 25 mm2: 5 x 5 (VQFN | 32)     SAR     Pseudo-Differential
Single-Ended    
Multiplexed     Ext
Int    
Comparator     5     0     3     5.5     1.65     5.5     0.8     92     -110     Catalog    
ADS8168 Order now 16     1000     8     Enhanced SPI
SPI