AFE4404YZPR

Analog Front End (AFE) Overview

The AFE4404YZPR is a Texas Instruments analog front-end (AFE) integrated circuit designed for wearable applications. It features a single-channel, 24-bit Sigma-Delta ADC with a sampling rate of 1 kS/s and a signal-to-noise ratio of 100 dB. The device operates on an analog supply voltage ranging from 2 V to 3.6 V and supports digital logic levels between 1.8 V and 5.25 V. Communication is handled via Serial or I2C interfaces. Housed in a DSBGA-15 package, it functions within a temperature range of -20°C to +70°C.

Analog Front End (AFE) Feature Summary

• Single-channel 24-bit resolution with 100 dB SNR
• Sigma-Delta architecture supporting 1 kS/s sampling
• Dual power domain: 2–3.6 V analog, 1.8–5.25 V digital
• Compact DSBGA-15 surface-mount package

Analog Front End (AFE) Applications

• Wearable health monitoring devices
• Pulse oximetry systems
• Heart rate monitors

Analog Front End (AFE) Procurement Notes

Verify the suffix 'YZPR' corresponds to the reel packaging configuration when ordering. Confirm that the required development environment includes the AFE4404EVM evaluation module for initial testing. Ensure input signals match the differential input specifications of the component.

Analog Front End (AFE) Selection Notes

Select this part for applications requiring high-resolution optical sensing in space-constrained wearables. The 1.8 V minimum digital supply allows compatibility with low-power microcontrollers. Verify that the external reference requirements align with the system design, as the device utilizes an external reference type.

Analog Front End (AFE) Part Context

This component belongs to the AFE4404 series of analog front-ends. It shares core electrical specifications with variants such as the AFE4404YZPT, differing primarily in packaging quantities and reel configurations rather than functional performance.

Analog Front End (AFE) Replacement Considerations

The AFE4404YZPT is a verified substitute within the same series, offering identical electrical characteristics but potentially different packaging quantities.