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M
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RF SILICON AND SUBSYSTEMS SOLUTIONS FOR BROADBAND COMMUNICATIONS AND AUTOMOTIVE ELECTRONICS
MT7402 HYBRID CAR TV TUNER MODULE FOR AUTOMOTIVE APPLICATIONS
PRODUCT BRIEF
The MT7402 is a high-end tuner for terrestrial analog and digital TV reception. It's designed to meet the stringent requirements of mobile applications.
MT7402 Tuner Module
The MT7402 Hybrid Car TV Tuner Module is specifically designed to meet the demanding performance targets of automotive customers, at an attractive price. This tuner is compatible with both analog TV standards as well as with the digital DVB-T standard, enabling customers to realize a highly integrated, high-performance, cost-effective hybrid car TV receiver solution. The MT7402 Tuner Module converts the RF signal into an IF signal. It combines a low noise figure with high gain and offers an operational frequency of 45 MHz to 860 MHz divided into VHF low, VHF high and UHF bands. Signal paths for the three different bands are realized separately, providing excellent performance. The RF AGC can be controlled either externally via the RF AGC voltage input or automatically via the internal AGC loop control, with programmable parameters for threshold and time constant. The address select function enables the use of up to four MT7402 tuners to realize high performance functions like tuner diversity, frequency diversity, or blending between analog TV and DVB-T reception. The analog TV section provides a balanced IF output capable of directly driving an external surface acoustical wave (SAW) filter. The external demodulation can cover all analog TV standards, provided that the picture carrier is fixed at 38.9 MHz and the filtering of the tone carrier is done accordingly. The digital TV section contains a switchable (7/8 MHz) SAW filter for excellent adjacent channel performance, an IF amplifier for filter loss compensation, and offers a balanced IF output to directly drive an external DVB-T demodulator. The IF gain can be controlled externally via the IF AGC voltage input. Band selection, tuning, and several tuner functions are controlled via I2C serial bus. The MT7402 Tuner Module combines very small size with high performance in harsh environments, making them especially suitable for automotive and mobile applications.
APPLICATIONS
* * Hybrid (analog and digital) car TV receivers Set-top box applications
FEATURES
ANALOG
*
*
Compatible with receiving standards B/G, D/K, L/L, M/N and I (PC fixed at 38.9 MHz) Balanced IF output drives an external SAW filter directly Balanced IF output (36 MHz) with integrated switchable (7/8 MHz) SAW filter and integrated IF amplifier Excellent phase noise
DIGITAL
*
MICROTUNE
*
GENERAL
* * * * * * * Single conversion hyperband tuner Input frequency range: 45 MHz to 860 MHz Common antenna input via pin Excellent large-signal behavior Low noise figure Very high gain Selectable RF AGC (externally or internally controlled) Externally controlled IF AGC Address select input allows control of up to four MT7402 modules Conforms to DBP, EN, and VDE Functions controlled by I2C bus Horizontal housing with very small form factor Designed and qualified according to automotive requirements
* *
* * *
*
M T74 02 HYB RID C AR TV TUNER MODULE
PRODUCT BRIEF
OPERATING CHARACTERISTICS
PARAMETER
5V power supply voltage Current Voltage 33V power supply voltage Current Voltage Temperature range Operating temperature in slowly moving air Storage temperature
ELECTRICAL CHARACTERISTICS
TYP
5
MIN
4.75
MAX
160 5.25 2 36.65 +75 +85
UNIT
mA V mA V C C
PARAMETER
Analog receiving frequency range (referred to picture carrier) VHF low VHF high UHF Digital receiving frequency range (referred to center frequnecy) VHF low VHF high UHF Tuning resolution Analog mode Digital mode Voltage gain Analog mode (VHF / UHF) Digital mode (VHF / UHF) Noise figure VHF low / VHF high UHF VSWR RF AGC dynamic range VHF low VHF high UHF IF AGC dynamic range IF rejection Image rejection VHF low / VHF high UHF Phase noise (f = 1 kHz) VHF low VHF high UHF
MIN
TYP
MAX
UNIT
31.35 -20 -40
33
45.25 157.25 471.25
154.25 463.25 863.25
MHz MHz MHz
48.5 160.5 474.0 62.5 166.67 48 / 47 87 / 87 5.5 / 4.5 6 2 55 50 45 50 60 70 / 70 60 87 83 80
157.0 466.0 866.0
MHz MHz MHz kHz kHz dB dB dB dB
INPUT/OUTPUT CHARACTERISTICS
PARAMETER
Antenna input (common VHF/UHF) Input impedance RF AGC voltage input Control voltage IF AGC voltage input Control voltage Address select input (I2C bus) Voltage Quantity of selections SCL (I2C bus) Low voltage High voltage Frequency SDA (I2C bus) Low voltage High voltage IF digital output (balanced) Frequency Bandwidth switchable IF analog output (balanced) Frequency picture carrier
MIN
TYP
75
MAX
UNIT
0.5 0.5 0
4 4 5 4 1.5
V V V
2.3 100 400 1.5 2.3 36.0 7 or 8 38.9
V V kHz V V MHz MHz MHz
dB dB dB dB dB dB dB -dBc/Hz -dBc/Hz -dBc/Hz
MECHANICAL CHARACTERISTICS
PARAMETER
Horizontal housing Length Width Height
MEASUREMENT
53.5 39.8 9.3
UNIT
mm mm mm
Analog Demodulation (Filtering, Audio/Video Multistandard Demodulation, Tuner Diversity, Frequency Scanning Diversity)
IF Analog
Audio/Video Signal
Switching Antenna Diversity and Antenna Amplifier
MT 7402 (up to 4 tuners)
Signal Multiplexer (Analog/Digital Blend)
Audio/Video Signal
IF Digital
Digital Demodulation (COFDM Demodulator, Tuner Diversity, MPEG Decoder)
Audio/Video Signal
Microprocessor
MT7402 Block Diagram
Microtune, Inc., 2201 Tenth Street, Plano, TX 75074, USA Tel: +1-972-673-1600, Fax: +1-972-673-1602, E-mail: sales@microtune.com, Web site: www.microtune.com For a detailed list of design centers, sales offices, and sales representatives, visit our Web site at www.microtune.com.
The information in this document is believed to be accurate and reliable. Microtune assumes no responsibility for any consequences arising from the use of this information, nor from any infringement of patents or the rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or other rights of Microtune. The information in this publication replaces and supersedes all information previously supplied, and is subject to change without notice. The customer is responsible for assuring that proper design and operating safeguards are observed to minimize inherent and procedural hazards. Microtune assumes no responsibility for applications assistance or customer product design. The devices described in this document are not authorized for use in medical, life-support equipment, or any other application involving a potential risk of severe property or environmental damage, personal injury, or death without prior express written approval of Microtune. Any such use is understood to be entirely at the user's risk. Microtune is a registered trademark of Microtune, Inc. MicroTuner, MicroStreamer, VideoCaster, DataCaster, and the Microtune logo are trademarks of Microtune, Inc. All other trademarks belong to their respective companies. Microtune's products are protected by one or more of the following U.S. patents: DE10011662; GB1026825; ES1026825; DE19628727; DE19904588.7; DE348698; FR348698; GB348698; IT348698; DE3821716; US5,933,946; DE50000802.7; DE552624 and additional patents pending or filed. Entire contents Copyright (c) 1996 - 2005 Microtune, Inc. 041105
MT7402 PB-00054 -- Rev 1.1
April 2005

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