BAL-NRF02D3

Balun Overview

The STMicroelectronics BAL-NRF02D3 is an ultraminiature balun designed for RF signal conditioning. It integrates a matching network and harmonics filter to optimize performance in compact designs. The device features a nominal input impedance of 50 Ω and provides a conjugate match specifically tailored for Nordic Semiconductor nRF51822-CEAA circuits. Operating within the 2400 MHz to 2.5 GHz frequency range, it exhibits a maximum insertion loss of 1.9 dB. The component supports surface mount installation with a minimum operating temperature of -40°C and a maximum of 105°C.

Balun Feature Summary

• Integrates matching network and harmonics filter for optimized RF performance
• Provides conjugate match specifically customized for Nordic Semiconductor nRF51822-CEAA circuits
• Utilizes IPD technology on a non-conductive glass substrate

Balun Applications

• Signal conditioning for Nordic Semiconductor nRF51822-CEAA wireless systems
• Integration into nRF2723 and nRF2752 nRFgo modules
• Compact RF front-end design requiring harmonic suppression

Balun Procurement Notes

Verify that the specific application utilizes the Nordic Semiconductor nRF51822-CEAA variant, as the BAL-NRF02D3 is conjugately matched to this specific build code. Ensure the design accommodates the 4-pin CSPG package dimensions. Confirm that the operating environment remains within the specified -40°C to 105°C temperature range to maintain performance integrity.

Balun Selection Notes

Select the BAL-NRF02D3 when designing for the nRF51822-CEAA chip to ensure optimal impedance matching without external components. This part is suitable for applications requiring low insertion loss and harmonic filtering in a small footprint. It is not interchangeable with variants matched to other Nordic chips like the nRF24LE1 or nRF51822-QFAA, which require different balancing networks.

Balun Part Context

This component belongs to STMicroelectronics' ultraminiature balun series, utilizing IPD technology. It is distinct from the BAL-NRF01D3, which matches different Nordic chips such as the nRF24LE1 and nRF51822-QFAA. The BAL-NRF02D3 is specifically engineered for the nRF51822-CEAA, offering a dedicated solution for 2.4 GHz ISM band applications with integrated filtering capabilities.

Balun Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.