ADS1299-4PAGR

Analog Front End (AFE) Overview

The ADS1299-4PAGR is a low-noise, 4-channel, 24-bit analog-to-digital converter (ADC) designed for biopotential measurements. It integrates four simultaneous-sampling delta-sigma ADCs with programmable gain amplifiers (PGAs), right-leg drive (RLD) drives, and bias drives. The device operates with an analog supply voltage range of 4.75 V to 5.25 V and a digital supply voltage of 1.8 V. It features a serial peripheral interface (SPI) for communication and supports sampling rates up to 16 kSPS per channel. The component is housed in a TQFP-64 package and is RoHS compliant.

Analog Front End (AFE) Feature Summary

• Four simultaneous-sampling 24-bit delta-sigma ADCs
• Integrated programmable gain amplifiers (PGAs) with gains from 1 to 12
• Built-in right-leg drive (RLD) and bias drives for noise reduction
• Low power consumption of 42 mW at maximum data rate

Analog Front End (AFE) Applications

• Electroencephalography (EEG) systems
• Electromyography (EMG) applications
• Electrocardiography (ECG) monitoring devices
• Portable medical instrumentation

Analog Front End (AFE) Procurement Notes

Verify the suffix 'AGR' indicates tape-and-reel packaging when ordering. Confirm the specific revision level against the latest Texas Instruments datasheet to ensure compatibility with existing firmware or hardware designs. Check for lead time variations as this is an active component.

Analog Front End (AFE) Selection Notes

Select the ADS1299-4PAGR when four channels of high-resolution biopotential acquisition are required. Compare with the ADS1299-6PAGR if six channels are needed, or the ADS1299IPAG for an 8-channel configuration. Ensure the system design accommodates the 4.75 V to 5.25 V analog supply requirement.

Analog Front End (AFE) Part Context

This part belongs to the ADS1299-x family of analog front-ends specifically optimized for biomedical signal acquisition. The '-4' designation specifies the number of integrated ADC channels, while 'PA' denotes the TQFP-64 package type, and 'GR' indicates the reel quantity and packaging method.

Analog Front End (AFE) Replacement Considerations

Direct pin-compatible replacements within the same family include the ADS1299-6PAGR and ADS1299IPAG, though channel counts differ. For single-channel needs, the ADS1294 series may be considered, but interface and PGA configurations should be verified.