ADS8331 (ACTIVE)

2.7V~5.5V, 16 Bit 500KSPS Low Power Serial ADC

2.7V~5.5V, 16 Bit 500KSPS Low Power Serial ADC - ADS8331
 

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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
# 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)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Sample Rate (Max) (MSPS)
ADS8331 ADS8168 ADS8332 ADS8344
16    16    16    16   
500    1000    500    100   
4    8    8    8   
SPI    SPI    SPI    Serial   
-40 to 85    -40 to 125    -40 to 85    -40 to 85   
TSSOP
VQFN   
VQFN    TSSOP
VQFN   
SSOP
SSOP   
5.25 | 1ku    12.67 | 1ku    5.00 | 1ku    8.40 | 1ku   
14.2    30    14.2    3.2   
24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP)
24VQFN: 16 mm2: 4 x 4(VQFN)   
32VQFN: 25 mm2: 5 x 5(VQFN)    24TSSOP: 50 mm2: 6.4 x 7.8(TSSOP)
24VQFN: 16 mm2: 4 x 4(VQFN)   
20SSOP: 52 mm2: 6 x 8.65(SSOP)
20SSOP: 56 mm2: 7.8 x 7.2(SSOP)   
SAR    SAR    SAR    SAR   
Pseudo-Differential
Single-Ended   
Pseudo-Differential
Single-Ended   
Pseudo-Differential
Single-Ended   
Pseudo-Differential
Single-Ended   
Multiplexed    Multiplexed    Multiplexed    Multiplexed   
Ext    Ext
Int   
Ext    Ext   
Daisy-Chainable    Comparator    Daisy-Chainable    N/A   
4.2    5    4.2    5.25   
0    0    0    0   
2.7    3    2.7    2.7   
5.5    5.5    5.5    5.25   
1.65    1.65    1.65    2.7   
5.5    5.5    5.5    5.25   
2    0.3    2    6   
91    92    91    86   
91.5    92    91.5    89   
-101    -110    -101    -90   
0.5    1    0.5    0.1   

WEBENCH® Designer ADS8331