AFE4404YZPT

Analog Front End (AFE) Overview

The AFE4404YZPT is an integrated analog front-end (AFE) designed for wearable photoplethysmography (PPG) applications. Manufactured by Texas Instruments, this component features a single-channel architecture with a 24-bit resolution Sigma-Delta ADC. It supports sampling rates up to 1 kS/s and communicates via Serial I2C interfaces. The device operates on supply voltages ranging from 1.8 V to 5.25 V, with analog supplies between 2 V and 3.6 V. Housed in a DSBGA-15 package suitable for surface mount technology, it functions within a temperature range of -20°C to +70°C.

Analog Front End (AFE) Feature Summary

• Integrated 24-bit Sigma-Delta ADC with 100 dB SNR
• Single-channel differential input configuration
• I2C serial interface support
• DSBGA-15 ultra-small package

Analog Front End (AFE) Applications

• Wearable health monitoring devices
• Portable vital signs monitors
• Smart wristbands and watches

Analog Front End (AFE) Procurement Notes

Verify the specific suffix YZPT against the manufacturer datasheet SLAS927F to confirm package type and temperature grade. Ensure compatibility with I2C bus requirements and voltage levels before integration. Cross-reference the Mouser part number 595-AFE4404YZPT for accurate sourcing details.

Analog Front End (AFE) Selection Notes

Select this component when a single-channel PPG solution with high resolution is required for space-constrained wearables. The 24-bit resolution and 100 dB SNR are critical for low-noise signal acquisition. Verify that the system design accommodates the DSBGA-15 footprint and the specified operating voltage range of 1.8 V to 5.25 V.

Analog Front End (AFE) Part Context

The AFE4404 belongs to the AFE4404 series of analog front-ends optimized for optical heart rate sensors. It integrates LED drivers, transimpedance amplifiers, and ADCs into a single chip, reducing bill-of-materials complexity compared to discrete solutions.

Analog Front End (AFE) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the TI AFE4404 datasheet for family-compatible alternatives or updated revisions.