1FEATURES

2The LMX5453 is a drop in replacement for the

LMX5452. The LMX5453 has new features

added:

• eSCO

• eSCO over USB HCI transport

• Enhanced scatternet

• Interlaced scan

• Flushing

• Audio PCM slave mode support

• Generic PCM configuration

• Compliant with the Bluetooth 2.0 Core

Specification

• Better than -80 dBm input sensitivity

• Class 2 operation

• Low power consumption:

• Accepts external clock or crystal input:

– Clocking option 12/13 MHz with PLL bypass

mode for power reduction

– 10-20 MHz external clock or crystal network

– Secondary 32.768 kHz oscillator for low-

power modes

– Advanced power management features

• High integration:

– Implemented in 0.18 μm CMOS technology to–

RF includes on-chip antenna filter and

switch

• On-chip firmware with complete HCI

• Embedded ROM (200K) and Patch RAM (16.6K)

memory

• Up to 7 Asynchronous Connection Less (ACL)

links

• Support for two simultaneous voice or

Extended Synchronous Connection Oriented

(eSCO) and Synchronous Connection Oriented

(SCO) and links.

• Enhanced scatternet

• Interlaced scan

• Flushing

• Audio PCM slave mode support

• Generic PCM configuration

• Fractional-N Sigma/Delta modulator

• Operating voltage range 2.5–3.6V

• I/O voltage range 1.6–3.6V

• 60-pad micro-module BGA package (6.1 mm ×

9.1 mm × 1.2 mm)

APPLICATIONS

• Mobile Handsets

• USB Dongles

• Stereo Headsets

• Personal Digital Assistants

• Personal Computers

• Automotive Telematics

DESCRIPTION

The LMX5453 is a highly integrated Bluetooth 2.0 compliant solution. The integrated baseband

controller and 2.4 GHz radio combine to form a

complete, small form-factor (6.1 mm × 9.1 mm × 1.2

mm) Bluetooth node.

The on-chip memory, ROM, and Patch RAM provide

lowest cost and minimize design risk with the

flexibility of firmware upgrades.

The firmware supplied in the on-chip ROM supports a

complete Bluetooth Link Manager and HCI with communication through a UART or USB interface.

This firmware features point-to-point and point-to–

multipoint link management, supporting data rates up

to 723 kbps.

The radio employs an integrated antenna filter and

switch to minimize the number of external

components.

The radio has a heterodyne receiver architecture with

a low intermediate frequency (IF), which enables the

IF filters to be integrated on-chip. The transmitter uses direct IQ-modulation with Gaussian-filtered bit-

stream data, a voltage-controlled oscillator (VCO)

buffer, and a power amplifier.

The LMX5453 module is lead free and RoHS (Restriction of Hazardous Substances) compliant. For

more information on those quality standards, please

visit our green compliance website at **

http://www.national.com/quality/green/