ADS8558 730kSPS 12-Bit 6-Channel Simultaneous-Sampling ADC | TI.com

ADS8558
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730kSPS 12-Bit 6-Channel Simultaneous-Sampling ADC

 

Description

The ADS855x contains six low-power, 16-, 14-, or 12-bit, successive approximation register (SAR) based analog-to-digital converters (ADCs) with true bipolar inputs. Each channel contains a sample-and-hold circuit that allows simultaneous high-speed multi-channel signal acquisition.

The ADS855x supports data rates of up to 730 kSPS in parallel interface mode or up to 500 kSPS if the serial interface is used. The bus width of the parallel interface can be set to eight or 16 bits. In serial mode, up to three output channels can be activated.

The ADS855x is specified over the full industrial temperature range of –40°C to 125°C and is available in an LQFP-64 package.

Features

  • Family of 16-, 14-, 12-Bit, Pin- and
    Software-Compatible ADCs
  • Six SAR ADCs Grouped in Three Pairs
  • Maximum Data Rate Per Channel with Internal
    Conversion Clock and Reference:
    ADS8556: 630 kSPS (PAR) or 450 kSPS (SER)
    ADS8557: 670 kSPS (PAR) or 470 kSPS (SER)
    ADS8558: 730 kSPS (PAR) or 500 kSPS (SER)
  • Maximum Data Rate with External Conversion
    Clock and Reference:
    800 kSPS (PAR) or 530 kSPS (SER)
  • Pin-Selectable or Programmable Input Voltage
    Ranges: Up to ±12 V
  • Excellent Signal-to-Noise Performance:
    ADS8556: 91.5 dB, ADS8667: 85 dB,
    ADS8668: 73.9 dB
  • Programmable and Buffered Internal Reference:
    0.5 V to 2.5 V and 0.5 V to 3.0 V
  • Comprehensive Power-Down Modes:
    • Deep Power-Down (Standby Mode)
    • Partial Power-Down
    • Auto-Nap Power-Down
  • Selectable Parallel or Serial Interface
  • Operating Temperature Range: –40°C to 125°C

WEBENCH® Designer ADS8558



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
ADS8558 Order now 12     730     6     Parallel
SPI    
-40 to 125     LQFP | 64     7.16 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Daisy-Chainable
Oscillator    
12     -12     4.5     5.5     2.7     5.5     0.75     73.9     -89     Catalog    
ADS8556 Order now 16     630     6     Parallel
SPI    
-40 to 125     LQFP | 64     10.36 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Daisy-Chainable
Oscillator    
12     -12     4.5     5.5     2.7     5.5     3     91.5     -94     Catalog    
ADS8557 Order now 14     670     6     Parallel
SPI    
-40 to 125     LQFP | 64     8.76 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Daisy-Chainable
Oscillator    
12     -12     4.5     5.5     2.7     5.5     1     85     -91     Catalog