ADS8598S 18-Bit 200kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply | TI.com

ADS8598S (ACTIVE)

18-Bit 200kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply

18-Bit 200kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply - ADS8598S
 

Description

The ADS8598S 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 200 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 ADS8598S 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 ADS8598S 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:
    • 200-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 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
Sample Rate (Max) (MSPS)
ADS8598S ADS8588H ADS8588S ADS8598H
18     16     16     18    
200     500     200     500    
8     8     8     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 | 64     LQFP | 64     LQFP | 64     LQFP | 64    
15.50 | 1ku     15.00 | 1ku     13.00 | 1ku     18.00 | 1ku    
88.5     88.5     88.5     88.5    
64LQFP: 144 mm2: 12 x 12 (LQFP | 64)     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     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    
5.25     5.25     5.25     5.25    
2     0.5     1.5     2    
93.9     92.6     92.7     93.9    
94     92.6     92.7     94    
-107     -110     -114     -110    
Catalog     Catalog     Catalog     Catalog    
0.2     0.5     0.2     0.5