MT1467 Datasheet, PDF (1/2 Pages) Microtune,Inc – RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS

MT1467 AM/FM DOUBLE
TUNER MODULE
PRODUCT BRIEF
The MT1467 tuner modules are designed
for high-end automobile radios and
entertainment system.
MT1467 Tuner Module
RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
The MT1467 AM/FM Double Tuner
Module is designed specifically for
high-end automotive radio and
entertainment systems. It is optimized
to meet the performance, market and
pricing demands of automotive
customers.
To maximize sensitivity and
minimize dropouts due to multipath
interference, the MT1467 module
incorporates one AM tuner and two
independent FM tuner sections to
support a high-performance phase
diversity function. The 10.7 MHz IF
output can interface readily with a
dedicated DSP (e.g. Philips SAF
7730) to form a DSP-based digital
AM/FM radio system.
While both FM tuners receive the
same frequency in “phase diversity”
mode, the FM tuners can also be
set to different frequencies to
receive a RDS channel in the
background while listening to
another station. An AF sample-and-
hold interface for the external DSP
enables inaudible checking of
alternative frequencies within the
RDS network.
The MT1467 module provides a RF
AGC with a closed loop control and
adjustable thresholds. A keyed AGC
function is implemented to prevent
receiver desensitization due to
erroneous AGC response. The IF
AGC is controlled by the external
DSP. Furthermore the module
features automatic alignment for the
tracking filters and the image rejection
filters. All tuner functions and
parameters can be controlled via a
serial bus interface.
HD Radio™ (IBOC) capability is
optional. Versions for special AM
(LW/MW/SW) and FM bands
(Europe, USA, Japan) are also
available. The MT1467 module is
designed specifically for typical
automotive operating conditions. It
fully complies with RoHS
requirements.
APPLICATIONS
• High-end automotive
entertainment system
requiring digital IF
• HD Radio
FEATURES
FM
• VCO switch for phase diversity
applications
• Passive FM pre-stage with
auto aligned tracking filter
• Supports inaudible RDS
updating
• Image reject mixers
• Keyed AGC selectable
• Digital auto alignment of
tracking filters
AM
• Up-conversion
• AM Dual AGC (Cascode and
PIN)
• 1^st stage ceramic filtering
GENERAL
• All functions controlled by
serial bus
• Balanced IF outputs
• High integration and fully
shielded housing
• On-board EEPROM
• Variable IF output gain
• Lead-free and RoHS compliant