Integrated Impedance Matching with ESD Protection for Simplified Space-Saving Design in GNSS Receivers

27 January 2021 - 0 Comments

STMicroelectronics' BPF8089-01SC6 RF front-end IC — BPF8089-01SC6 RF front-end IC from STMicroelectronics

STMicroelectronics has announced that the BPF8089-01SC6 RF front-end for Global Navigation Satellite System (GNSS) receivers are using the impedance matching and electrostatic-discharge (ESD) protection circuitry for simplifying design and save real-estate. The BPF8089-01SC6 offers 50Ω matched interface between the receiver’s antenna and low-noise amplifier (LNA) and is ready to plug-and-play with ST’s STA8089 and STA8090 LNAs.

The new integrated device can replace a matching network that involves up to five capacitors, resistors, and inductors, as well as two discrete protection devices. The integrated ESD complies with IEC 61000-4-2 (C = 150pF, R = 330Ω) and exceeds level 4: 8kV for contact discharge and 15kV for air discharge. The device also withstand 2kV pulse voltage in accordance with MIL-STD 883C (C = 100pF, R = 1.5kΩ).

The BPF8089-01SC6 can be used in portable satellite receivers for GPS, Galileo, GLONASS, BeiDou, and QZSS constellations, which may be used in a number of applications including consumer satellite navigation, radio base stations, drones, and tracking of assets or livestock. Packed in a SOT23-6L package the BPF8089-01SC6 is in production priced from $0.198 for orders of 1000 pieces.

Features of BPF8089-01SC6 RF front-end IC

Companion chip of STA8089 and STA8090 (GNSS receiver)
Compatible with GPS / Galileo / GLONASS / BeiDou / QZSS
Designed to match STA8089 and STA8090 LNA to 50 Ω
Protection of LNA input against ESD on the antenna connector
IEC 61000-4-2, C = 150 pF, R = 330 Ω, exceeds level 4: 8 kV (contact discharge) and 15 kV (air discharge)

Note: More technical information can be found in the BPF8089-01SC6 datasheet linked at the bottom of this page and on the BPF8089-01SC6 RF front-end IC product page.