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ADX920 - 24-Bit Analog Front-End

General Description

The ADX920/1/2/3 devices are multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

Key Features

  • Three low-noise (ADX923) PGAs and two highresolution ADCs (ADX922/3).
  • Input-referred noise: 8.6μVPP (G = 6).
  • Input bias current: 100pA.
  • Data rate: 125SPS to 8kSPS.
  • CMRR: 117dB; THD:.
  • 107dB.
  • Programmable gain: 1, 2, 3, 4, 6, 8, or 12.
  • Supplies: unipolar or bipolar Analog: 2.7V to 5.5V Digital: 1.65V to 3.6V.
  • Built-in right leg drive amplifier, lead-off detection, test signals.
  • Integrated respiration impedanc.

📥 Download Datasheet

Datasheet Details

Part number ADX920
Manufacturer AnalogySemi
File Size 1.32 MB
Description 24-Bit Analog Front-End
Datasheet download datasheet ADX920 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
ADX920/ADX921/ADX922/ADX923 Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements 1. FEATURES • Three low-noise (ADX923) PGAs and two highresolution ADCs (ADX922/3) • Input-referred noise: 8.6μVPP (G = 6) • Input bias current: 100pA • Data rate: 125SPS to 8kSPS • CMRR: 117dB; THD: –107dB • Programmable gain: 1, 2, 3, 4, 6, 8, or 12 • Supplies: unipolar or bipolar Analog: 2.7V to 5.5V Digital: 1.65V to 3.