AFE4400RHAT

Analog Front End (AFE) Overview

The AFE4400RHAT is a single-channel analog front-end (AFE) integrated circuit manufactured by Texas Instruments, designed specifically for heart rate monitors and pulse oximeters. It features a 22-bit resolution with a sampling rate of 1.3 kS/s. The device operates on an analog supply voltage ranging from 2 V to 3.6 V and supports serial SPI interface communication. Packaged in a 40-pin VQFN format, it has a maximum power dissipation of 2.84 mW and functions within a temperature range of 0°C to +70°C.

Analog Front End (AFE) Feature Summary

• Integrated 22-bit ADC with 1.3 kS/s sampling rate for high-precision biometric sensing
• Low power consumption with 2.84 mW typical power dissipation
• Single-channel architecture optimized for heart rate and oximetry applications
• SPI serial interface for digital control and data output

Analog Front End (AFE) Applications

• Heart rate monitor systems
• Pulse oximeter devices
• Wearable health monitoring electronics

Analog Front End (AFE) Procurement Notes

Verify the specific suffix RHAT corresponds to the required tape-and-reel packaging configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ESD handling protocols are followed due to humidity sensitivity classification. Cross-reference the Mouser part number 595-AFE4400RHAT for accurate distributor identification.

Analog Front End (AFE) Selection Notes

Select this component when a single-channel, low-power solution for optical biometric sensing is required. The 22-bit resolution suits applications demanding high signal-to-noise ratio for weak photoplethysmography signals. Compare against the AFE4400RHAR variant if different packaging options are needed. Ensure system design accommodates the 2 V to 3.6 V analog supply range.

Analog Front End (AFE) Part Context

The AFE4400RHAT belongs to the AFE4400 series of analog front-ends from Texas Instruments. This series integrates necessary components for optical heart rate and SpO2 monitoring into a compact form factor. The RHAT suffix indicates a specific reel-based packaging variant suitable for automated surface-mount assembly processes.

Analog Front End (AFE) Replacement Considerations

The AFE4400RHAR is a documented alternative within the same family, potentially differing in packaging or reel specifications. Verify pinout compatibility and electrical parameter equivalence before substitution.