2002 Jan 03
2
Philips Semiconductors
Preliminary specification
0 dBm TrueBlue radio module
BGB100
FEATURES
Plug-and-play Bluetooth class 2 radio module, needs
only external antenna and reference clock
Small dimensions (12.25 x 9.8 x 1.9 mm)
Fully compliant to Bluetooth Radio Specification v1.1
High sensitivity (typical
80 dBm)
Advanced DC offset compensation for improved
reception quality
RSSI with high dynamic range
Simple interfacing to baseband controller, control by
3-wire serial bus
Internal shielding for better EMI (Electro Magnetic
Interference) immunity.
APPLICATIONS
Bluetooth transceivers in:
Cellular phones
Laptop computers
Personal digital assistants
Consumer applications.
DESCRIPTION
The BGB100 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 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 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 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
impedance and
can be connected directly to an external antenna, with a
50
transmission line.
The interfacing to the baseband processor 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. It is controlled by the same serial 3-wire bus.
The synthesizer accepts reference frequencies of 12, 13,
16 and 26 MHz. 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 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 SOT649A package with a
plastic cap.
CAUTION
This product is supplied in anti-static packing to prevent damage caused by electrostatic discharge during transport
and handling. For further information, refer to Philips specs.: SNW-EQ-608, SNW-FQ-302A and SNW-FQ-302B.