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

ADS8558 (ACTIVE)

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

View more

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

 
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)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADS8558 ADS8556 ADS8557
12     16     14    
730     630     670    
6     6     6    
Parallel
SPI    
Parallel
SPI    
Parallel
SPI    
-40 to 125     -40 to 125     -40 to 125    
LQFP | 64     LQFP | 64     LQFP | 64    
7.16 | 1ku     10.36 | 1ku     8.76 | 1ku    
335     335     335    
64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)    
SAR     SAR     SAR    
Single-Ended     Single-Ended     Single-Ended    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Ext
Int    
Ext
Int    
Ext
Int    
Daisy-Chainable
Oscillator    
Daisy-Chainable
Oscillator    
Daisy-Chainable
Oscillator    
12     12     12    
-12     -12     -12    
4.5     4.5     4.5    
5.5     5.5     5.5    
2.7     2.7     2.7    
5.5     5.5     5.5    
0.75     3     1    
73.8     89.5     84    
73.9     91.5     85    
-89     -94     -91    
Catalog     Catalog     Catalog    

Design tool

WEBENCH® Designer ADS8558