Overview
The BALF-SPI-02D3 is an ultra-miniature balun designed by STMicroelectronics, optimized for use with the SPIRIT1 transceiver. This component integrates a matching network and harmonic filter, specifically tailored for 434 MHz frequency applications. It utilizes STMicroelectronics' IPD (Integrated Passive Device) technology on a non-conductive glass substrate, which enhances RF performance. The balun is characterized by its low insertion loss, low amplitude and phase imbalance, and a very small footprint, making it ideal for compact and high-performance RF designs.
Key Specifications
| Parameter | Value | Unit | Min. | Typ. | Max. |
|---|---|---|---|---|---|
| Frequency Range | 434 MHz | - | - | - | - |
| Input Power (RFIN) | - | dBm | - | - | 20 |
| Operating Temperature (TOP) | - | °C | -40 | - | 85 |
| Nominal Differential RX Balun Impedance (ZRX) | - | Ω | - | - | - |
| Insertion Loss (S21RX-ANT) | - | dB | -2.3 | - | -3.2 |
| Input Return Loss (S11ANT) | - | dB | -20 | - | -10.5 |
| Output Phase Imbalance (ɸimb) | - | ° | -30 | 10 | 30 |
| Output Amplitude Imbalance (Aimb) | - | dB | -3.5 | - | 2 |
| Harmonic Levels (Att) | - | dBm | -40 | - | -44 |
| Package Type | Flip-Chip 6 bumps | - | - | - | - |
| Package Dimensions | 1.4 mm x 2.0 mm | - | - | - | - |
Key Features
- 50 Ω Nominal Input / Conjugate Match: Optimized for the SPIRIT1 transceiver.
- Low Insertion Loss: Minimizes signal attenuation.
- Low Amplitude and Phase Imbalance: Ensures high signal integrity.
- Integrated Harmonic Filter: Complies with major EMC regulations like CCC, FCC, ETSI, and ARIB.
- Small Footprint: Very low profile (< 670 μm after reflow) and compact dimensions (1.4 mm x 2.0 mm).
- High RF Performance: Utilizes IPD technology on a non-conductive glass substrate.
- Environmental Compliance: Available in ECOPACK® packages meeting various environmental standards.
Applications
- 434 MHz Impedance Matched Balun Filter: Specifically designed for the SPIRIT1 transceiver.
- Wireless Connectivity: Suitable for Sigfox, ZigBee, Bluetooth Low Energy, LoRa, 802.15.4 OpenThread, and ISM Radio SubGHz applications.
- Human Machine Interface (HMI): Used in various HMI applications requiring reliable RF communication.
- WM-BUS and Other SubGHz Applications: Optimized for use in wireless metering and other sub-gigahertz frequency applications.
Q & A
- What is the BALF-SPI-02D3 used for?
The BALF-SPI-02D3 is a balun used to match the impedance and filter harmonics for the SPIRIT1 transceiver at 434 MHz.
- What technology does the BALF-SPI-02D3 use?
The BALF-SPI-02D3 uses STMicroelectronics' IPD technology on a non-conductive glass substrate.
- What are the key specifications of the BALF-SPI-02D3?
Key specifications include a frequency range of 434 MHz, low insertion loss, low amplitude and phase imbalance, and a small footprint of 1.4 mm x 2.0 mm.
- What are the benefits of using the BALF-SPI-02D3?
Benefits include high RF performance, reduced RF complexity, and compliance with major EMC regulations.
- What is the package type of the BALF-SPI-02D3?
The BALF-SPI-02D3 comes in a Flip-Chip 6 bumps package.
- What are the operating temperature limits of the BALF-SPI-02D3?
The operating temperature range is from -40°C to +85°C.
- What applications is the BALF-SPI-02D3 suitable for?
It is suitable for wireless connectivity applications such as Sigfox, ZigBee, Bluetooth Low Energy, LoRa, and ISM Radio SubGHz.
- How does the BALF-SPI-02D3 contribute to EMC compliance?
The integrated harmonic filter helps comply with major EMC regulations like CCC, FCC, ETSI, and ARIB.
- What is the typical insertion loss of the BALF-SPI-02D3?
The typical insertion loss is between -2.3 dB and -3.2 dB.
- What is the output phase imbalance of the BALF-SPI-02D3?
The output phase imbalance is between -30° and 30°.
