AFE4500

Name: AFE4500
Brand: TI
SKU: AFE4500
Price: 8.25 USD

활성

바이오-임피던스 분석 및 전기와 광학 바이오센싱용 통합 AFE(아날로그 프론트 엔드)

지금 주문

데이터 시트

document-pdfAcrobat AFE4500 Ultra-Small, Integrated AFE for Bio-Impedance Analysis, Electrical Bio-sensing and Optical Bio-sensing datasheet (영어) PDF | HTML

AFE4500

활성

데이터 시트

지금 주문

제품 상세 정보

Applications

1-lead ECG, Dry electrode ECG, Impedance spectroscopy, Optical-HRM

Number of input channels

Resolution (bps)

Number of LEDs

Interface type

SPI, I2C

Operating temperature range (°C)

-40 to 85

Rating

Catalog

Applications

1-lead ECG, Dry electrode ECG, Impedance spectroscopy, Optical-HRM

Number of input channels

Resolution (bps)

Number of LEDs

Interface type

SPI, I2C

Operating temperature range (°C)

-40 to 85

Rating

Catalog

DSBGA (YBG)

7.606386 mm² 2.997 x 2.538

Integrated signal chains for Bio-Z, EDA, ECG, PPG
Synchronized ECG, PPG enables PTT-based BP
Bio-Z signal chain
- Multi-frequency Body impedance Analysis (BIA) with frequency programmable up to 250 kHz
- Low frequency excitation mode for EDA/GSR
- Complex (I,Q) Tetrapolar impedance measurement
- Sine-wave excitation with a 7-bit DAC
- Calibration scheme compensates for electrode impedance to achieve accurate Bio-Z
- State machine for Automatic Calibration
ECG signal chain:
- 1-lead ECG signal acquisition up to 2 kHz
- INA gain programmable from 2-21
- RLD output to set body bias through third electrode
- Input noise (0.5-150 Hz): 0.75 µVrms at 1 kHz
- ± 0.6 V differential DC offset and ± 0.3 V CM range
- HPF with 0.4 Hz corner, quick saturation recovery
- >1 GΩ input impedance, CMRR > 100 dB
- Integrated 300 Hz anti-aliasing low pass filter
- AC, DC lead-off detect: 1.6-nA to 100-nA
PPG signal chain
- Supports acquisition of up to 24 PPG signals
- Flexible allocation of 8 LED, 4 PD in each phase
- Supports PPG sensors at different data rates
- Optical loopback SNR of 100-dB, extendable to 110-dB with on-chip filtering
- Low Current for Continuous Operation with a Typical Value: 15-µA for an LED, 15-µA for the Receiver
PPG Transmitter
- 8-Bit Programmable LED Current with range adjustable from 25 mA to 250 mA
- Programmable LED On-Time per-phase
- Support of 8 LEDs in Common Anode
PPG Receiver
- Supports 4 PDs, 2 parallel receive paths
- Noise filtering with programmable bandwidth
- Trans-impedance Gain: 3.7 kΩ to 1 MΩ
- 8-bit Ambient Offset Subtraction DAC with range from16-256 µA
- 8-bit LED Offset Subtraction DAC with range from 32 to 64 µA
- Automatic ambient & LED DC cancellation
- Supports external clock and internal oscillator modes
- FIFO with 256-sample Depth
- SPI^TM, I²C interfaces: Selectable by pin
- Supplies: Rx:1.7-1.9V (LDO Bypass); 1.9 V to -3.6 V (LDO Enabled), Tx: 3 V to 5.5 V, IO:1.7-RX_SUP

Integrated signal chains for Bio-Z, EDA, ECG, PPG
Synchronized ECG, PPG enables PTT-based BP
Bio-Z signal chain
- Multi-frequency Body impedance Analysis (BIA) with frequency programmable up to 250 kHz
- Low frequency excitation mode for EDA/GSR
- Complex (I,Q) Tetrapolar impedance measurement
- Sine-wave excitation with a 7-bit DAC
- Calibration scheme compensates for electrode impedance to achieve accurate Bio-Z
- State machine for Automatic Calibration
ECG signal chain:
- 1-lead ECG signal acquisition up to 2 kHz
- INA gain programmable from 2-21
- RLD output to set body bias through third electrode
- Input noise (0.5-150 Hz): 0.75 µVrms at 1 kHz
- ± 0.6 V differential DC offset and ± 0.3 V CM range
- HPF with 0.4 Hz corner, quick saturation recovery
- >1 GΩ input impedance, CMRR > 100 dB
- Integrated 300 Hz anti-aliasing low pass filter
- AC, DC lead-off detect: 1.6-nA to 100-nA
PPG signal chain
- Supports acquisition of up to 24 PPG signals
- Flexible allocation of 8 LED, 4 PD in each phase
- Supports PPG sensors at different data rates
- Optical loopback SNR of 100-dB, extendable to 110-dB with on-chip filtering
- Low Current for Continuous Operation with a Typical Value: 15-µA for an LED, 15-µA for the Receiver
PPG Transmitter
- 8-Bit Programmable LED Current with range adjustable from 25 mA to 250 mA
- Programmable LED On-Time per-phase
- Support of 8 LEDs in Common Anode
PPG Receiver
- Supports 4 PDs, 2 parallel receive paths
- Noise filtering with programmable bandwidth
- Trans-impedance Gain: 3.7 kΩ to 1 MΩ
- 8-bit Ambient Offset Subtraction DAC with range from16-256 µA
- 8-bit LED Offset Subtraction DAC with range from 32 to 64 µA
- Automatic ambient & LED DC cancellation
- Supports external clock and internal oscillator modes
- FIFO with 256-sample Depth
- SPI^TM, I²C interfaces: Selectable by pin
- Supplies: Rx:1.7-1.9V (LDO Bypass); 1.9 V to -3.6 V (LDO Enabled), Tx: 3 V to 5.5 V, IO:1.7-RX_SUP

The AFE4500 is a versatile signal acquisition system that supports three signal chains. An impedance measurement signal chain with integrated excitation and sense can be used for applications like Bio-impedance analysis (BIA), Electro-dermal analysis (EDA) and Impedance spectroscopy.

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기타 바이오센싱 AFE 찾기

다운로드 스크립트와 함께 비디오 보기 동영상

추가 정보 요청

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기술 자료

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10개 모두 보기

	유형	직함		날짜
*	Data sheet	AFE4500 Ultra-Small, Integrated AFE for Bio-Impedance Analysis, Electrical Bio-sensing and Optical Bio-sensing datasheet	PDF \| HTML	2021/04/07
	Product overview	Bioimpedance (Bio-Z) Applications Using Integrated Analog Front End (AFE)	PDF \| HTML	2023/10/30
	Product overview	ECG and Cuffless Blood Pressure Monitoring With Integrated AFE	PDF \| HTML	2023/10/30
	Product overview	Photoplethysmography (PPG) With Integrated AFE for Optical Biosensing	PDF \| HTML	2023/10/30
	Application brief	ECG Signal Acquisition on Wearables	PDF \| HTML	2022/11/15
	Application brief	Measuring Oxygen Saturation (SpO2) on Wearables	PDF \| HTML	2022/11/14
	Application brief	Optical Heart Rate Monitoring (OHRM) on Wearables	PDF \| HTML	2022/11/14
	Application brief	Cuffless Blood Pressure Monitoring on Wearables	PDF \| HTML	2022/11/09
	Application brief	Body Composition Measurement (BCM) for Wearables	PDF \| HTML	2022/11/07
	Application brief	Electrodermal Activity (EDA) for Wearable Devices	PDF \| HTML	2022/09/06

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