AFE4960
- Supports ECG and respiration impedance measurement; configurable as 2-channel ECG or 1-channel ECG + 1-channel Respiration
- Can be used in IEC 60601-2-47:2012/(R)2016 and IEC 60601-2-27:2011(R)2016 compliant systems
- 222 µA/channel while operating as 2-channel ECG
- Integrated Pace pulse detection on 1 channel
- Supports a 3-lead ECG, extendable to 5 leads or higher by operating two or more AFEs in parallel
- ECG signal chain:
- Single channel ECG acquisition up to 2.048 kHz
- 2 channel ECG acquisition up to 1.36 kHz/channel
- RLD output to set body bias through third electrode
- Programmable INA gain from 2~12
- >1 GΩ input impedance, CMRR > 100 dB
- Input noise (0.5-150 Hz): 13 µVpp at INA gain of 3; 5 µVpp at INA gain of 12
- Integrated 370 Hz anti-aliasing low pass filter
- Mode for Continuous lead on/off detection
- Mode for Lead impedance measurement
- Bio-Z signal chain:
- Measurement of Bio-impedance over excitation frequency from 30 kHz to 100 kHz
- Sine wave or square wave excitation
- Respiration impedance measurement: 45 mΩ-pp noise on a baseline impedance of 2 kΩ
- Dual channel ECG channel:
- Bio-Z receiver configurable as a 2nd ECG channel
- External clock and internal oscillator modes
- FIFO with 128-sample Depth, 24-bit word
- SPITM, I2C interfaces: Selectable by pin
- 2.6-mm × 2.6-mm DSBGA, 0.4-mm Pitch
- Supplies: Rx:1.7-1.9 V, IO:1.7-1.9 V
The AFE4960 can be configured as either a 2-channel ECG receiver or as a 1-channel ECG receiver and a respiration impedance channel. The AFE signal chains can interface in a flexible manner to up to 4 electrodes. A Right Leg Drive (RLD) amplifier output, can be used to set the body bias. The AFE has DC lead biasing for lead on/off detection, and AC lead biasing for measuring the lead impedance. Pacemaker pulse detection is supported on one channel.
All the signal chain outputs are converted by a single ADC in well-defined time slots and stored as 24-bit words in a 128-sample FIFO which can be read out using a SPI or an I2C interface.
The AFE4960 is a fully integrated solution to realize a 3-lead ECG system. Synchronized operation of two AFEs in parallel can be used to realize a 5-lead ECG.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | AFE4960 Two-Channel ECG, Respiration and Pace Pulse Detection Analog Front End (AFE) for Clinical Wearables datasheet (Rev. A) | PDF | HTML | 2022年 3月 7日 |
| Application brief | Wearable EEG (Electroencephalography) (Rev. B) | PDF | HTML | 2023年 10月 30日 | |
| Application brief | Remote Patient Monitoring | PDF | HTML | 2022年 11月 30日 | |
| Application brief | ECG Signal Acquisition on Wearables | PDF | HTML | 2022年 11月 15日 | |
| Application brief | Analog Front End for 3-Lead and 5-Lead ECG (Rev. A) | PDF | HTML | 2022年 4月 20日 |
設計與開發
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AFE4960EVM — 適用於具整合式呼吸及心率偵測的雙通道 ECG AFE 的 AFE4960 評估模組
AFE4960 評估模組 (EVM) 可用來評估 AFE4960 生物感測類比前端 (AFE) 的平台，支援心電圖 (ECG) 和生物阻抗訊號的同步訊號採集。
AFE4960 可以配置為雙通道 ECG 接收器，或做為單通道 ECG 接收器和呼吸阻抗通道。AFE 訊號鏈可彈性地介接至高達四個電極。右腳驅動 (RLD) 放大器輸出可用來設定本體偏差。AFE 具有用於偵測引線開/關的 DC 引線偏置，以及用於測量引線阻抗的 AC 引線偏置。
一個通道支援心律調節器脈搏偵測。兩個通道輸出的可編程抽取濾波器可降低輸出資料率。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| DSBGA (YBG) | 36 | 檢視選項 |
訂購與品質
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- MTBF/FIT 估算值
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- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
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