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ADX921 - 24-Bit Analog Front-End

Download the ADX921 datasheet PDF. This datasheet also covers the ADX920 variant, as both devices belong to the same 24-bit analog front-end family and are provided as variant models within a single manufacturer datasheet.

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

Note: The manufacturer provides a single datasheet file (ADX920-AnalogySemi.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number ADX921
Manufacturer AnalogySemi
File Size 1.32 MB
Description 24-Bit Analog Front-End
Datasheet download datasheet ADX921 Datasheet

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Other Datasheets by AnalogySemi

Part Number Description
ADX920 24-Bit Analog Front-End
ADX922 24-Bit Analog Front-End
ADX923 24-Bit Analog Front-End
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ADX111Q 16-Bit ADC

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.