Overview
The BALF-SPI2-01D3 is an ultra-miniature balun transformer produced by STMicroelectronics. This component is designed to optimize RF performance and is particularly suited for use with the ATSAMR21E18 and similar microcontrollers. It utilizes STMicroelectronics' IPD (Integrated Passive Device) technology on a non-conductive glass substrate, which enhances its RF characteristics. The BALF-SPI2-01D3 integrates a matching network and a harmonics filter, making it an essential component for wireless communication systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Frequency Range | 779 - 956 MHz | MHz |
| Impedance - Unbalanced / Balanced | 50 Ω | Ω |
| Insertion Loss (Rx) | 0.95 - 1.15 dB | dB |
| Insertion Loss (Tx High Power) | 0.9 - 1.25 dB | dB |
| Insertion Loss (Tx Low Power) | 0.95 - 1.25 dB | dB |
| Return Loss (Rx) | 14 - 17 dB | dB |
| Return Loss (Tx High Power) | 19 - 22 dB | dB |
| Return Loss (Tx Low Power) | 14 - 17 dB | dB |
| Operating Temperature | -40 to +105 °C | °C |
| Package Type | Flip-Chip |
Key Features
- Ultra-miniature design using STMicroelectronics' IPD technology on non-conductive glass substrate for optimized RF performance.
- Integrates matching network and harmonics filter.
- 50 Ω nominal input and conjugate match balun.
- Deep Tx rejection harmonic filter.
- Low insertion loss.
- Small footprint and low profile (≤ 630 μm after reflow).
- High RF performance.
- RF BOM and area reduction.
- ECOPACK®2 compliant component.
Applications
- STM32WL Sub-GHz Wireless Microcontrollers.
- LPWAN-compliant radio solutions, enabling modulations such as LoRa®, (G)FSK, (G)MSK, and BPSK.
- Wireless communication systems requiring high RF performance and harmonic filtering.
Q & A
- What is the frequency range of the BALF-SPI2-01D3?
The frequency range of the BALF-SPI2-01D3 is from 779 MHz to 956 MHz.
- What type of impedance does the BALF-SPI2-01D3 offer?
The BALF-SPI2-01D3 offers a 50 Ω nominal input and conjugate match balun.
- What are the key features of the BALF-SPI2-01D3?
The key features include an ultra-miniature design, integrated matching network and harmonics filter, low insertion loss, and high RF performance.
- What is the operating temperature range of the BALF-SPI2-01D3?
The operating temperature range is from -40 °C to +105 °C.
- What type of package does the BALF-SPI2-01D3 use?
The BALF-SPI2-01D3 uses a Flip-Chip package.
- Is the BALF-SPI2-01D3 environmentally compliant?
Yes, the BALF-SPI2-01D3 is ECOPACK®2 compliant.
- What are the typical applications of the BALF-SPI2-01D3?
Typical applications include STM32WL Sub-GHz Wireless Microcontrollers and LPWAN-compliant radio solutions.
- How does the BALF-SPI2-01D3 optimize RF performance?
The BALF-SPI2-01D3 optimizes RF performance using STMicroelectronics' IPD technology on a non-conductive glass substrate.
- What are the insertion loss values for the BALF-SPI2-01D3?
The insertion loss values are 0.95 - 1.15 dB for Rx, 0.9 - 1.25 dB for Tx High Power, and 0.95 - 1.25 dB for Tx Low Power.
- How does the BALF-SPI2-01D3 handle harmonic rejection?
The BALF-SPI2-01D3 includes a deep Tx rejection harmonic filter to handle harmonic rejection effectively.
