AFE159P4RGZR

Analog Front End (AFE) Overview

The AFE159P4RGZR is a low-power, 4-channel analog front-end (AFE) designed for electrocardiogram (ECG) applications. It integrates four simultaneous sampling delta-sigma ADCs with programmable gain instrumentation amplifiers, an internal reference, and an on-chip PLL. The device supports digital heart rate pulse detection and thoracic impedance measurement. It operates with dual power supplies: 1.7 V to 1.9 V for the analog section and 3.15 V to 5.25 V for the digital interface. Key electrical parameters include a 24-bit resolution, a maximum sampling rate of 128 kS/s per channel, and SPI communication. It is housed in a DSBGA-49 package.

Analog Front End (AFE) Feature Summary

• Four-channel simultaneous sampling with 24-bit resolution and 128 kS/s data rate
• Integrated programmable gain instrumentation amplifiers and internal voltage reference
• Supports digital heart rate pulse detection and thoracic impedance measurement
• Low-power operation with dual supply rails (1.7–1.9 V analog, 3.15–5.25 V digital)

Analog Front End (AFE) Applications

• Electrocardiogram (ECG) monitoring systems
• Holter monitors and wearable cardiac devices
• Portable medical diagnostic equipment

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'RGZR' against the manufacturer's official datasheet to confirm the tape-and-reel packaging quantity and moisture sensitivity level. Ensure compatibility with the required operating temperature range of -20°C to +85°C. Cross-reference the part number with the latest Texas Instruments documentation to confirm current production status and RoHS compliance details before procurement.

Analog Front End (AFE) Selection Notes

Select this component when a multi-channel ECG solution with integrated signal conditioning and digitization is required. The AFE159P4RGZR is suitable for designs needing high-resolution simultaneous sampling without external ADCs or references. Consider the DSBGA-49 package size constraints and the need for dual voltage domains during PCB layout. Verify that the system architecture can support the SPI interface timing requirements.

Analog Front End (AFE) Part Context

This part belongs to the AFE159x family of analog front-ends from Texas Instruments. The family includes variants with different channel counts and feature sets, such as the AFE1594 and AFE159P4. These devices are designed to reduce system complexity and cost in medical imaging and monitoring applications by integrating multiple functions into a single chip.

Analog Front End (AFE) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's selection guide for compatible alternatives within the AFE159x family or other TI medical AFE series.