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

16-Bit 8-Channel Simultaneous-Sampling Bipolar-Input SAR ADC - ADS8568
 

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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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)
Rating
Sample Rate (Max) (MSPS)
ADS8568 ADS8528 ADS8548 ADS8584S ADS8588H ADS8588S
16     12     14     16     16     16    
500     650     600     330     500     200    
8     8     8     4     8     8    
Parallel
SPI    
Parallel
SPI    
Parallel
SPI    
Byte-Wide
Parallel
SPI    
Byte-Wide
Parallel
SPI    
Byte-Wide
Parallel
SPI    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
LQFP
VQFN    
LQFP
VQFN    
LQFP
VQFN    
LQFP     LQFP     LQFP    
11.75 | 1ku     4.75 | 1ku     10.00 | 1ku     8.00 | 1ku     15.00 | 1ku     13.00 | 1ku    
335     335     335     54.5     88.5     88.5    
64LQFP: 144 mm2: 12 x 12(LQFP)
64VQFN: 81 mm2: 9 x 9(VQFN)    
64LQFP: 144 mm2: 12 x 12(LQFP)
64VQFN: 81 mm2: 9 x 9(VQFN)    
64LQFP: 144 mm2: 12 x 12(LQFP)
64VQFN: 81 mm2: 9 x 9(VQFN)    
64LQFP: 144 mm2: 12 x 12(LQFP)     64LQFP: 144 mm2: 12 x 12(LQFP)     64LQFP: 144 mm2: 12 x 12(LQFP)    
SAR     SAR     SAR     SAR     SAR     SAR    
Single-Ended     Single-Ended     Single-Ended     Single-Ended     Single-Ended     Single-Ended    
Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling     Simultaneous Sampling    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Daisy-Chainable
Oscillator    
Daisy-Chainable
Oscillator    
Daisy-Chainable
Oscillator    
Oscillator
Over-Voltage Protection
PGA    
Oscillator
Over-Voltage Protection
PGA    
Oscillator
Over-Voltage Protection
PGA    
12     12     12     10     10     10    
-12     -12     -12     -10     -10     -10    
4.5     4.5     4.5     4.75     4.75     4.75    
5.5     5.5     5.5     5.25     5.25     5.25    
2.7     2.7     2.7     2.3     2.3     2.3    
5.5     5.5     5.5     5.25     5.25     5.25    
3