MT1502EDC Datasheet, PDF (1/2 Pages) Microtune,Inc – DAB/DMB TUNER

RF SILICON AND SUBSYSTEMS SOLUTIONS
FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MT1502EDC
DAB/DMB TUNER
PRODUCT BRIEF
The MT1502EDC is a high-end
automotive tuner module with an
integrated analog to digial converter for
terrestrial digital audio (DAB) or video
services (DMB).
MT1502EDC DAB/DMB Tuner
The MT1502EDC is a tuner
module for reception in VHF Band
III and L-Band, compliant to the
DAB EUREKA 147 standard. It
performs a down conversion and
filtering of the RF signal before it is
provided into an integrated 12 bit
analog to digital converter (ADC).
The output signal is a digital
intermediate frequency (IF) suitable
for further signal processing with a
generic or an application-specific
DSP.
In order to minimize interferences
and distortion caused by undesired
signals in adjacent channels, the
tuner section of the module features
digitally aligned tracking filters and
an integrated IF SAW filter.
Moreover an automatic gain control
(AGC) is implemented which
attenuates large RF input signals in
order to keep distortion at very low
levels. A WAGC pin provides the
possibility to freeze this AGC during
the null symbol of the DAB signal to
prevent the tuner from
overamplifying as the transmission
re-continues.
For clock synchronization
between the analog to digital
converter (ADC) and the DAB
backend (DSP) the MT1502EDC
offers a clock output. Incorrect
samples which may result from a
distorted input signal are indicated
at the OTR pin. Through another
pin connector the ADC can be shut
down completely to save energy.
The MT1502EDC has been
optimized to meet the specific
requirements of automotive
applications and provides reliable
performance even under harsh
environmental conditions like
temperatures from -40°C to +85°C.
Active antenna systems as
commonly used for automotive
applications can be fed with 12V_DC
phantom power which is routed
from a pin connector to the antenna
input. The module is lead free and fully
compliant with RoHS requirements of
the European Union.
APPLICATIONS
• High-end automotive infotainment
systems featuring digital audio
(DAB) or video services (DMB)
according to the EUREKA 147
standard
FEATURES TUNER SECTION
• Double down-conversion for L-
Band, Single down-conversion for
VHF Band III reception
• 50 Ω antenna input matching
• Integrated AGCs for RF and IF
• Gain controlled LNAs for both bands
• Selectable RF and IF AGC
threshold levels
• Tunable preselection filter
• IF SAW filter
FEATURES ADC
• 12 bit sampling
• Parallel data output
• Out-of-range indicator (OTR)
• Power down function
• Clock output for DAB backend
(DSP)
OVERALL FEATURES
• Compact form factor
• Shielded metal housing
• SPI bus interface for control
functions
• Integrated EEPROM to store
alignment and traceability data
• Extended parametric temperature
range of -40° to +85°C
• Single input for Band III and L-Band
antenna
• 12 V phantom power feeding for an
active antenna
• Lead free and RoHS compliant
• Qualified according to automotive
requirements