BGB204 NXP Semiconductors, BGB204 Datasheet - Page 2

• Manufacturer Part Number: BGB204
• Manufacturer: NXP Semiconductors

Specifications of BGB204

• Lead Free Status / Rohs Status: Compliant

Offered by NXP Software, LifeVibes Voice software
enhancement algorithms are the result of extensive research.
By studying the abilities and limitations of human hearing,
audio perception, acoustical environments in everyday life,
and the emotional impact sounds has on us, NXP Software
has made great progress in, for example, determining how
we locate sound sources and how we distinguish between
simultaneous sounds. This know-how is designed into the
three LifeVibes Voice algorithms optimized for headsets and
carkit applications: Noise Void, Voice Clarity, and Hands Free.
Headset Applications
Noise Void solves the problem of not being understood
by removing stationary background noise while maintaining
the naturalness of human speech.
Voice echo, particularly in small headsets, can have a serious
impact on the quality of communications. Acoustical coupling
between the earpiece and the microphone can create
considerable time echo and can affect the overall quality of a
call. Noise Void includes full-duplex acoustic echo cancellation
that dramatically reduces echo in even the smallest of headsets.
Voice Clarity measures the amount of background noise and
automatically boosts the intelligibility of speech by making the
incoming voice more understandable. Voice Clarity requires
little processing power and low memory usage, so it has a
negligible effect on battery life. Voice Clarity, which focuses
on the earpiece and the speaker, complements Noise Void,
which primarily impacts the microphone.
NXP voice solution for handsets and carkits BGB203/4
www.nxp.com
Voice Codec
PCF87757
1.8V
3.0V LDO reg.
SA57000-30D
efficiency reg.
TPS62202
1.8V high
© 2007 NXP B.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and
reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use.
Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
on/off -
connect
Control
Voice
Clock
1.8V
24MHz
BGB203/204
Full module
56/49mm
Bluetooth
1.8V
Volume+
Volume -
Carkit Applications
In cars, sound is reproduced by the car’s speakers or by the
speakers of a carkit. Hands Free is optimized for use in carkits
and cancels the acoustical echo in full-duplex calls, so people
can have naturally flowing conversations without having
to repeat themselves. Hands Free also removes stationary
background noise, from the engine, for example, so the words
come through loud and clear.
Bluetooth 1.2 SiPs BGB203/4
The BGB203 and the BGB204 are complete, plug-and-play
Bluetooth 1.2 SiPs that integrate a Bluetooth baseband, a
full radio, and embedded memory. The BGB203 integrates
embedded Flash, while the BGB204 integrates embedded ROM.
The BGB203 and the BGB204 are complete, plug-and-play
Bluetooth 1.2 SiPs that offer superior performance in a very
small footprint.
The SiP approach increases integration while improving
performance, because active and passive components
are produced in the best technology for each subsystem.
The BGB203 integrates a Bluetooth baseband, a full radio,
and embedded Flash memory. The BGB204 is the same as
the BGB203, but replaces the Flash memory with ROM.
The two SiPs are footprint compatible.
Both SiPs deliver excellent RF performance, with a transmit
power of +5 dBm and a sensitivity of -88 dBm at the antenna
port. Using a 150-mAh battery, the BGB204 delivers up
to 10 hours of talk time and up to 25 days of standby time.
Only three external components are required for complete
operation, and both SiPs are designed to co-exist with
802.11 Wireless LAN.
1.8-V voice codec PCF87757
The PCF87757, a voice codec that offers low-power, low-noise
support for microphones and headphones, uses a 1.8-V supply
to support low-cost headset applications. Available in a tiny
HVQFN package that measures only 3x3 mm, it is one of the
smallest 1.8-V voice codecs available on the market today.
It is optimized for use with the BGB203 and BGB204.
Date of release: July 2007
Document order number: 9397 750 16111
Printed in the Netherlands