ADS8598S 8-Channel Simultaneous-Sampling ADC

Texas Instruments' ADS8598S is an 18-bit 200 kSPS 8-channel simultaneous-sampling ADC with bipolar inputs on a single supply

Image of Texas Instruments' ADS8598S 8-Channel Simultaneous-Sampling ADCTexas Instruments' ADS8598S device is an 8-channel, integrated data acquisition (DAQ) system based on an 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.

  • 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
  • On-chip digital filter for oversampling
  • Flexible parallel, byte, and serial interface
  • 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.
  • Overtemperature performance:
    • Max offset drift: 3 ppm/°C
    • Gain drift: 6 ppm/°C
  • Temperature range: -40°C to +125°C
  • Package: LQFP-64
  • Monitoring and control for power grids
  • Protection relays
  • Multi-phase motor controls
  • Industrial automation and controls
  • Multichannel data acquisition systems

ADS8598S 8-Channel Simultaneous-Sampling ADC

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Published: 2018-01-29