ADS8568 16-Bit 8-Channel Simultaneous-Sampling Bipolar-Input SAR ADC | TI.com

ADS8568 (ACTIVE)

16-Bit 8-Channel Simultaneous-Sampling Bipolar-Input SAR ADC

 

Description

The ADS85x8 contain eight low-power, 12-, 14-, or 16-bit, successive approximation register (SAR)-based analog-to-digital converters (ADCs) with true bipolar inputs. These channels are grouped in four pairs, thus allowing simultaneous high-speed signal acquisition of up to 650 kSPS.

The devices support selectable parallel or serial interface with daisy-chain capability. The programmable reference allows handling of analog input signals with amplitudes up to ±12 V.

The ADS85x8 family supports an auto-sleep mode for minimum power dissipation and is available in both 64-pin VQFN and LQFP packages. The entire family is specified over a temperature range of –40°C to +125°C.


Features

  • Family of 12-, 14-, and 16-Bit, Pin- and Software-Compatible ADCs
  • Maximum Data Rate per Channel:
    • ADS8528: 650 kSPS (PAR) or
      480 kSPS (SER)
    • ADS8548: 600 kSPS (PAR) or
      450 kSPS (SER)
    • ADS8568: 510 kSPS (PAR) or
      400 kSPS (SER)
  • Excellent AC Performance:
    • Signal-to-Noise Ratio:
      ADS8528: 73.9 dB, ADS8548: 85 dB, ADS8568: 91.5 dB
    • Total Harmonic Distortion:
      ADS8528: –89 dB, ADS8548: –91 dB, ADS8568: –94 dB
  • Programmable, Buffered Internal Reference:
    0.5 V–2.5 V or 0.5 V–3.0 V Supports Input Voltage Ranges up to ±12 V
  • Selectable Parallel or Serial Interface
  • Scalable Low-Power Operation Using Auto-Sleep Mode: Only 32 mW at 10 kSPS
  • Fully Specified Over Extended Industrial Temperature Range

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WEBENCH® Designer ADS8568



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
ADS8568 Order now 16     500     8     Parallel
SPI    
-40 to 125     LQFP | 64
VQFN | 64    
11.75 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)
64VQFN: 81 mm2: 9 x 9 (VQFN | 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    
ADS8528 Order now 12     650     8     Parallel
SPI    
-40 to 125     LQFP | 64
VQFN | 64    
4.75 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)
64VQFN: 81 mm2: 9 x 9 (VQFN | 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    
ADS8548 Order now 14     600     8     Parallel
SPI    
-40 to 125     LQFP | 64
VQFN | 64    
10.00 | 1ku     335     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)
64VQFN: 81 mm2: 9 x 9 (VQFN | 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    
ADS8584S Order now 16     330