ADX922QAQFN32

AnalogySemi
ADX920Q, AD921Q, AD922Q, AD923Q Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements 1. FEATURES ⚫ ⚫ 2. APPLICATONS Three low-noise PGAs and two high-resolution ADCs ⚫ Electroencephalogram (EEG) (ADX921Q, ADX922Q and ADX923Q) ⚫ Medical instrumentation (ECG) including: High Resolution mode and low power mode Patient monitoring: Holter, event, stress, and vital ...
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ADX920Q, AD921Q, AD922Q, AD923Q Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements 1. FEATURES ⚫ ⚫ 2. APPLICATONS Three low-noise PGAs and two high-resolution ADCs ⚫ Electroencephalogram (EEG) (ADX921Q, ADX922Q and ADX923Q) ⚫ Medical instrumentation (ECG) including: High Resolution mode and low power mode Patient monitoring: Holter, event, stress, and vital (ADX923Q, ADX923Q) signs including ECG, AED, and telemedicine High Resolution: 385uW/channel Personal care and fitness monitors (heart rate, Low Power: 320uW/channel respiration, and ECG, EEG) ⚫ Input-referred noise: 6μVPP (150Hz BW, G = 6) ⚫ Input bias current: 50pA ⚫ Data rate: 125SPS to 8kSPS ⚫ CMRR: 122dB; THD: 115dB 3. DESCRIPTION ⚫ Programmable gain: 1, 2, 3, 4, 6, 8, or 12 The ADX921Q, ADX922Q, and ADX923Q are multichannel, ⚫ Supplies: unipolar or bipolar 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 Built-in right leg drive amplifier, lead-off detection, test Integrated respiration impedance measurement Electrode Rotation mode (ERM) to implement timedivision multiplexing LEAD-I, LEAD-II, and LEAD-III ⚫ ⚫ oscillator. The ADX921Q, ADX922Q, and ADX923Q incorporate all features commonly required in portable, low-power medical electrocardiogram (ECG), sports, and fitness applications. measurements (ADX923Q) With high levels of integration and exceptional performance, Integrated digital AC Lead-Off measurement and the ADX921Q, ADX922Q, and ADX923Q enable the creation software AC Lead-Off measurement of scalable medical instrumentation systems at significantly Integrated analog PACE measurement (ADX921Q, reduced size, power, and overall cost. ADX922Q, ADX923Q) ⚫ Built-in oscillator and reference ⚫ Supply monitor, internal temp sensor, OSC fault detection, overrange detection ⚫ Flexible power-down, standby mode ⚫ SPI™-compatible serial interface, timeout reset ⚫ Cyclic redundancy check (CRC) on communications, checksum ⚫ acquisition Digital: 1.7V to 3.6V (ADX922Q and ADX923Q) ⚫ High-precision, simultaneous, multichannel data Analog: 2.7V to 5.5V signals ⚫ ⚫ Support ADC data FIFO with max depth 12 with 24 ECG samples. (ADX920Q, ADX923Q) ⚫ Support EFUSE ECC to improve the product life cycle ⚫ Functional safety features to support automotive application ⚫ Operating temperature range: –40°C to +125°C ⚫ AEC-Q100 © 2021 AnalogySemi Ltd. All Rights Reserved. The ADX921Q, ADX922Q, and ADX923Q have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADX921Q, ADX922Q, and ADX923Q operate at data rates up to 8kSPS. Lead-off detection can be implemented internal to the device, using the device internal excitation current sink or source. The ADX922Q and ADX923Q versions include a fully integrated respiration impedance measurement function. Operating temperature is specified from –40°C to +125°C. See Table1 for the device information. Page 1 of 8 PDF
Документация на ADX922QAQFN32 

Дата модификации: 09.06.2022

Размер: 313.1 Кб

8 стр.

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