ADS8578S (ACTIVE)

14-Bit High-Speed 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply

14-Bit High-Speed 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply - ADS8578S
 

Description

The ADS8578S device is an 8-channel, integrated data acquisition (DAQ) system based on a 14-bit successive approximation (SAR) analog-to-digital converter (ADC). All input channels are simultaneously sampled to achieve a maximum throughput of 200 kSPS per channel. The device features a complete analog front-end for each channel, including a programmable gain amplifier (PGA) with high input impedance of 1 MΩ, input clamp, low-pass filter, and an ADC input driver. The device also features a low-drift, precision reference with a buffer to drive the ADC. A flexible digital interface supporting serial, parallel, and parallel byte communication enables the device to be used with a variety of host controllers.

The ADS8578S can be configured to accept ±10-V or ±5-V true bipolar inputs using a single 5-V supply. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The high performance and accuracy, along with zero-latency conversions offered by this device, also make the ADS8578S a great choice for many industrial automation and control applications.

Features

  • 14-Bit ADC With Integrated Analog Front-End
  • Simultaneous Sampling: 8 Channels
  • Pin-Programmable Bipolar Inputs: ±10 V and ±5 V
  • High Input Impedance: 1 MΩ
  • 5-V Analog Supply: 2.3-V to 5-V Digital Supply
  • Overvoltage Input Clamp With 7-kV ESD
  • Low-Drift, On-Chip Reference (2.5 V) and Buffer
  • Excellent Performance:
    • 200-kSPS Max Throughput per Channels
    • DNL: ±0.2 LSB; INL: ±0.2 LSB
    • SNR: 85.8 dB; THD: −109 dB
  • Overtemperature Performance:
    • Max Offset Drift: 3 ppm/°C
    • Gain Drift: 6 ppm/°C
  • On-Chip Digital Filter for Oversampling
  • Flexible Parallel, Byte, and Serial Interface
  • Temperature Range: –40°C to +125°C
  • Package: 64-Pin LQFP

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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)
ADS8578S ADS8584S ADS8586S ADS8588S
14    16    16    16   
200    330    250    200   
8    4    6    8   
Byte-Wide
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   
LQFP    LQFP    LQFP    LQFP   
10.50 | 1ku    8.00 | 1ku    10.00 | 1ku    13.00 | 1ku   
88.5    54.5    73    88.5   
64LQFP: 144 mm2: 12 x 12(LQFP)    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   
Single-Ended    Single-Ended    Single-Ended    Single-Ended   
Simultaneous Sampling    Simultaneous Sampling    Simultaneous Sampling    Simultaneous Sampling   
Ext
Int   
Ext
Int   
Ext
Int   
Ext
Int   
Oscillator
Over-Voltage Protection
PGA   
Oscillator
Over-Voltage Protection
PGA   
Oscillator
Over-Voltage Protection
PGA   
Oscillator
Over-Voltage Protection
PGA   
10    10    10    10   
-10    -10    -10    -10   
4.75    4.75    4.75    4.75   
5.25    5.25    5.25    5.25   
2.3    2.3    2.3    2.3   
5    5.25    5.25    5.25   
0.45    1.5    1.5    1.5   
85.4    92.7    92.7    92.7   
85.8    92.7    92.7    92.7   
-114    -114    -114    -114   
0.2    0.2    0.2    0.2