BGB101

The BGB101 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 out-of-band blocking performance, a TX/RX switch, TX and RX balans, 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 in BGB101, giving a cost-optimized solution. Demodulation is done in open-loop mode to reduce the effects of reference frequency breakthrough on reception quality. An advanced offset compensation circuit compensates for VCO drift and RF frequency errors during open-loop demodulation, under control by the baseband processor.

The circuit BGB101 is integrated on a ceramic substrate. It is connected to the main PCB through a LGA (Land Grid Array). 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 interfacing to the baseband processor of BGB101 is very simple, which leads to a low-power solution. Control of the module
operating mode is done through a 3-wire serial bus and one additional control signal.

TX and RX data I/O lines are analogue-mode interfaces.

A high-dynamic range RSSI output allows near-instantaneous assessment of radio link quality.Frequency selection is done internally by a conventional synthesizer. BGB101 is controlled by the same serial 3-wire bus.

The synthesizer of BGB101 accepts reference frequencies of 12 and 13. This reference frequency should be supplied by an external source. This can be a dedicated (temperature compensated) crystal oscillator or be part of the baseband controller.

The circuit of BGB101 is designed to operate from 3.0 V nominal supplies. Separate ground 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 is a leadless SOT750A package with a plastic cap.