AS7058-BWLM WLP LF T&R

Analog Front End (AFE) Overview

The AS7058 is an integrated multi-vital sign monitoring device by ams-OSRAM USA INC. It supports photoplethysmogram (PPG), electrocardiogram (ECG), body impedance (BioZ), and electrodermal activity (EDA) measurements. The PPG system includes up to eight LED outputs and eight photodiode inputs with two 20-bit ADCs. The ECG channel features high input impedance, low noise, and a 20-bit ADC compliant with IEC 60601-2-47. The BioZ channel shares the ADC and offers programmable gain and filtering. Supply voltages for digital, analog, and IO domains are 1.70 V to 1.98 V, while VCSEL supplies range from 1.75 V to 5.50 V. The device operates between -40 °C and 85 °C in a 42-ball WLCSP package.

Analog Front End (AFE) Feature Summary

• Integrated acquisition for PPG, ECG, BioZ, and EDA signals
• Up to 8 LED drivers and 8 photodiode inputs with Advanced Automatic Offset Control
• High-resolution 20-bit synchronized ADCs for all channels
• ECG compliance with IEC 60601-2-47 standards

Analog Front End (AFE) Applications

• Wearable vital sign monitors
• Smart watches and fitness bands
• Heart rate monitors and hearables
• Medical patches and pulse-oximetry devices
• Body impedance and skin water content measurement systems

Analog Front End (AFE) Procurement Notes

Verify the specific ordering code against the datasheet table. Standard delivery forms include tape & reel options of 500 pieces per reel or 10,000 pieces per tray. Confirm moisture sensitivity level 1 classification and lead-free matte tin finish requirements during procurement planning.

Analog Front End (AFE) Selection Notes

Select based on required signal channels; the AS7058 supports simultaneous ECG, BioZ/EDA, and dual PPG channels. Ensure supply voltage compatibility within the 1.70 V to 1.98 V range for digital/analog domains. Consider the 42-ball WLCSP package dimensions (2.82 x 2.55 mm) for space-constrained wearable designs.

Analog Front End (AFE) Part Context

The AS7058 belongs to the AS705x family of vital sign monitoring ICs. It serves as a specialized analog front-end solution for non-invasive health monitoring applications. The component integrates multiple physiological measurement capabilities into a single small-form-factor package, reducing external component count.

Analog Front End (AFE) Replacement Considerations

Datasheet lists AS7058A as a variant within the same package type. Verify pinout and marking differences if substituting between standard and 'A' suffix versions.