ADAS1000-3BSTZ-RL

Overview

The ADAS1000-3BSTZ-RL is a low-power, three-electrode electrocardiogram (ECG) analog front end manufactured by Analog Devices Inc. It features three acquisition channels and one driven lead, designed for biopotential signal digitization. The device supports AC and DC lead-off detection, internal pace detection algorithms, and thoracic impedance measurement. It operates within a supply voltage range of 3.15 V to 5.5 V for AVDD and 1.71 V to 1.89 V for ADCVDD/DVDD. Key electrical parameters include a 19-bit resolution at 2 kHz data rate, 100 dB signal-to-noise ratio, and power consumption as low as 15 mW with three leads enabled.

Feature Summary

• Three ECG acquisition channels with integrated right leg drive and selectable reference lead
• Supports AC and DC lead-off detection with programmable current sources
• Internal pace detection algorithm operating on all three leads
• Scalable noise versus power control architecture with multiple gain settings

Applications

• Bedside patient monitoring systems
• Portable telemetry and Holter monitors
• Automated external defibrillators (AED)
• Cardiac pacemaker programmers
• Ambulatory and stress testing equipment

Procurement Notes

Verify the ordering suffix RL indicates reel packaging when sourcing components. Confirm the BSTZ designation corresponds to the specific temperature grade and package variant required for the design. Ensure compatibility with the EVAL-ADAS1000SDZ evaluation board for initial development and validation of the analog front end performance.

Selection Notes

Select the ADAS1000-3BSTZ-RL for applications requiring three-channel ECG acquisition without respiration or pace detection features found in the ADAS1000-4 model. Consider the 64-lead LQFP package for easier prototyping if thermal constraints allow. Evaluate the power/noise scaling options to balance battery life against signal fidelity requirements for portable devices.

Part Context

This component belongs to the ADAS1000 family of biopotential analog front ends. It serves as a primary device that can be ganged with secondary devices like the ADAS1000-2 to expand channel counts. The ADAS1000-3 specifically excludes the respiration and pace detection hardware present in the ADAS1000-4, offering a simplified solution for standard ECG monitoring.

Replacement Considerations

The ADAS1000-4BSTZ-RL is a functional substitute that includes additional respiration and pace detection capabilities. The ADAS1000BSTZ-RL provides five channels instead of three. Verify pinout compatibility and register configuration differences when substituting these variants within the same product line.