BALF-ATM-01E3

Overview

The BALF-ATM-01E3 is an integrated RF balun manufactured by STMicroelectronics, designed for the 2.4GHz to 2.5GHz frequency range. It features a 50/50 Ohm impedance transformation between unbalanced and balanced ports. The component incorporates a matching network within a monolithic glass substrate, eliminating external components. Key electrical specifications include a maximum insertion loss of 1.3dB, a minimum return loss of 15dB, and a phase difference of 9 degrees. It is housed in a compact 6-SMD, no-lead package suitable for surface mount assembly.

Feature Summary

• Integrates a matching network within a monolithic glass substrate
• Provides balanced-to-unbalanced signal conversion
• Includes an integrated harmonic filter
• Designed for conjugate matching with specific transceivers

Applications

• Wireless LAN modules operating at 2.4GHz
• Bluetooth low energy (BLE) transceivers
• Zigbee and IEEE 802.15.4 compliant devices
• IoT sensor nodes requiring compact RF front ends

Procurement Notes

Verify that the ordered part number matches BALF-ATM-01E3 exactly, as suffixes may indicate different packaging or tape-and-reel quantities. Confirm RoHS3 compliance status if required by project specifications. Ensure ESD handling protocols are followed during storage and assembly due to the sensitive nature of RF components. Cross-reference the manufacturer's latest datasheet for any updates on recommended land patterns or soldering profiles.

Selection Notes

Select this component when a small form factor is critical for 2.4GHz applications. The integrated matching network reduces board space and simplifies design compared to discrete solutions. Verify compatibility with the target transceiver's output impedance requirements. Consider the 6-SMD package constraints for PCB layout density. This device is suitable for high-volume production environments requiring consistent RF performance.

Part Context

This balun belongs to STMicroelectronics' BALF series, which focuses on integrated solutions for wireless connectivity. These components are engineered to replace traditional discrete baluns and matching networks. The series supports various frequency bands, with this specific model targeting the ISM 2.4GHz band commonly used in short-range wireless communications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult STMicroelectronics directly for potential alternatives or updated product line information.