ADS8588H - 16-Bit 500kSPS 8-Channel Simultaneous-Sampling ADC With Bipolar Inputs on a Single Supply

The ADS8588H device is an 8-channel, integrated data acquisition(DAQ) system based on a 16-bit successive approximation (SAR) analog-to-digital converter (ADC).All input channels are simultaneously sampled to achieve a maximum throughput of 500 kSPS perchannel. The device features a complete analog front-end for each channel, including a programmablegain amplifier (PGA) with a high input impedance of 1 MΩ, an input clamp, low-pass filter, and anADC input driver. The device also features a low-drift, precision reference with a buffer to drivethe ADC. A flexible digital interface supporting serial, parallel, and parallel byte communicationenables the device to be used with a variety of host controllers.

The ADS8588H can be configured to accept ±10-V or ±5-V true bipolar inputs using a single 5-V supply. The high input impedanceallows direct connection with sensors and transformers, thus eliminating the need for externaldriver circuits. The high performance and accuracy, along with zero-latency conversions offered bythis device, also means the ADS8588H meets the strict design requirements formany industrial automation and control applications.

• 16-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
• Performance:
  • 500-kSPS Max Throughput on All Channels
  • DNL: ±0.3 LSB Typ; INL: ±0.5 LSB Typ
  • SNR: 92.7 dB Typ; THD: −110 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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