Designers building Bluetooth Smart® devices or modules can accelerate project completion, maximize system performance, and minimize solution size using STMicroelectronics’ new integrated balun, the BALF-NRG-01D3.
As a companion chip to ST’s BlueNRG Bluetooth Smart wireless network processor, the BALF-NRG-01D3 integrates all the necessary external balancing and matching circuitry and ensures optimum performance: a challenge that usually demands considerable RF circuit-design skills. Its input impedance is matched to the BlueNRG device to maximize sensitivity and output power, with harmonic filtering to meet the regulatory standard. The BALF-NRG-01D3 replaces as many as 15 surface-mount components and has up to 75% smaller footprint compared to a discrete balun.
The BALF-NRG-01D3 is the latest member of ST’s Integrated Passive Device (IPD) family that implements RF front-end circuitry for applications such as mobile devices, wearable electronics, and Internet of Things (IoT) endpoints. The complete IPD family includes baluns, RF couplers, diplexers, and band-pass filters for RF applications at frequencies above 400 MHz, such as WLAN, Bluetooth®, ZigBee®, and LTE.
The BALF-NRG-01D3 is in full production, in a 1.4 mm × 0.85 mm 4-bump Wafer-Level Chip-Scale Package (WLCSP) only 0.67 mm high, priced at $0.15 for orders of 5000 units.
