ADS8598H 18-Bit 500kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply | TI.com

ADS8598H (ACTIVE)

18-Bit 500kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply

 

Description

The ADS8598H device is an 8-channel, integrated data acquisition (DAQ) system based on a 18-bit successive approximation (SAR) analog-to-digital converter (ADC). All input channels are simultaneously sampled to achieve a maximum throughput of 500 kSPS per channel. The device features a complete analog front-end (AFE) 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 ADS8598H 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 makes the ADS8598H a great choice for many industrial automation and control applications.

Features

  • 18-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 I/O Supply
  • Overvoltage Input Clamp With 9-kV ESD
  • Low-Drift, On-Chip Reference (2.5 V) and Buffer
  • Excellent Performance:
    • 500-kSPS Max Throughput on All Channels
    • DNL: ±0.5 LSB Typ; INL: ±2.0 LSB Typ
    • SNR: 94 dB Typ; THD: −109 dB Typ
  • Over Temperature 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: LQFP-64

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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
ADS8598H Order now 18     500     8     Byte-Wide
Parallel
SPI    
-40 to 125     LQFP | 64     18.00 | 1ku     88.5     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Oscillator
Over-Voltage Protection
PGA    
10     -10     4.75     5.25     2.3     5.25     2     94     -110     Catalog    
ADS8588H Order now 16     500     8     Byte-Wide
Parallel
SPI    
-40 to 125     LQFP | 64     15.00 | 1ku     88.5     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Oscillator
Over-Voltage Protection
PGA    
10     -10     4.75     5.25     2.3     5.25     0.5     92.6     -110     Catalog    
ADS8588S Order now 16     200     8     Byte-Wide
Parallel
SPI    
-40 to 125     LQFP | 64     13.00 | 1ku     88.5     64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     SAR     Single-Ended     Simultaneous Sampling     Ext
Int    
Oscillator
Over-Voltage Protection
PGA    
10     -10     4.75     5.25     2.3     5.25     1.5     92.7     -114     Catalog    
ADS8598S Order now 18     200     8     Byte-Wide
Parallel
SPI    
-40 to 125     LQFP | 64     15.50 | 1ku     88.5