BGB110

The BGB110 TrueBlue Bluetooth radio module is a short-range radio transceiver for wireless links operating in the globally available ISM band, between 2402 and 2480 MHz. It is composed of a fully integrated, state-of-the-art near-zero-IF transceiver chip, an antenna filter for improved out-of-band blocking performance, a TX/RX switch, TX and RX baluns, the VCO resonator and a basic amount of supply decoupling. The device is a "Plug-and Play" module that needs no external components for proper operation. Robust design allows for untrimmed components, giving a cost-optimized solution.

Demodulation of BGB110 is done in open-loop mode to reduce the effects of reference frequency breakthrough on reception quality. An advanced AFC circuit compensates for VCO drift and RF frequency errors during open-loop demodulation.

The circuit BGB110 is integrated on a ceramic substrate. It is connected to the main PCB through a LGA (Land Grid Array). A metal cap suppresses the effects of EMI (Electro Magnetic Interference). The RF port has a normalized 50 Ω impedance and can be connected directly to an external antenna, with a 50 Ω transmission line.

The control interface of BGB110 is compatible whith BlueRF unidirectional JTAG RXMODE 2. The connection to Philips Semiconductors VW2600X family of Bluetooth baseband processors is straightforward.

Frequency selection is done internally by a conventional synthesizer. The synthesizer of BGB110 accepts a reference frequency of 13 MHz. This reference frequency should either be stabilised by an external crystal or be supplied by en external source. The 13 MHz clock signal is also made available as a system clock to the baseband processor. It can be switched off for power saving. In that case, a 3.2 kHz clock is provided for wake-up timing.

A 1 MHz reference, derived from the 13 MHz system clock, is available externally to clock out the transmit data from the baseband processor. The BGB110 also provides a 2.048 MHz clock for PCM voice codecs

The circuit BGB110 is designed to operate from 3.0 V nominal supplies. Separate ground and supply connections are provided for reduced parasitic coupling between different stages of the circuit. There is a basic amount of RF supply decoupling incorporated into the circuit.

The envelope of BGB110 is a leadless SOTtbdA package with a metal cap.