Description
ADX920/ADX921/ADX922/ADX923 Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements 1..
The ADX920/1/2/3 devices are multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in program.
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
Applications
* Medical instrumentation (ECG) including: Patient monitoring: Holter, event, stress, and vital signs including ECG, AED, and telemedicine Personal care and fitness monitors (heart rate, respiration, and ECG)
* High-precision, simultaneous, multichannel data acquisition
3. DESCRIPTIO