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| 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 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-andhold 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 RadioTM (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) 1st 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 MT1467 A M /F M DOUBL E TU N ER MODUL E PRODUCT BRIEF RECOMMENDED OPERATING CONDITIONS PARAMETER 8.5 V Power Supply Current AM mode Current FM mode Voltage 5 V Power Supply Current AM mode Current FM mode Voltage Operating temperature range Storage temperature ELECTRICAL CHARACTERISTICS* MAX UNIT mA mA V mA mA V C C MIN TYP 65 58 8.5 40 30 5 PARAMETER MIN TYP MAX 1.720 107.9 1.602 108 UNIT kHz MHz kHz MHz dBV dB dB dB dBV dB dB dB dB % dBV -40 -40 85 95 INPUT/OUTPUT CHARACTERISTICS PARAMETER Antenna Input AM mode Input Capacitance, AGC inactive Input Conductance, AGC inactive Input Conductance, AGC active Antenna Input FM mode Input Impedance, AGC inactive VSWR, AGC inactive Input Resistance, AGC active AGC Buffer Output Keyed AGC Input SDA SCL Intermediate Frequency Output Max. balanced output Voltage Output resistance AF Sample Output* AF Hold Output* Bus enable LOW-level input voltage HIGH-level input voltage MIN TYP 60 1 MAX UNIT pF mS mS 3.3 50 4 10 Receiving frequency range (depends on version) AM mode USA 520 FM mode USA 87.9 AM MW mode Europe 531 FM mode Europe 87.5 AM Parameters Sensitivity: RF level for 26dB S+N/N 30 S+N/N at RF input = 60dBV 54 IF rejection (10.7MHz) 75 Image rejection IF1 = tuned 80 frequency + 21.4MHz FM Parameters Sensitivity: RF level for 26dB S+N/N -2 S+N/N (Mono) at RF input = 62 60dBV IF rejection (10.7MHz) 100 Image rejection IF1 = tuned 55 frequency + 21.4 MHz AM suppression 70 Distortion at RF level = 60dBV 0.05 Selectivity 200 kHz 65 *Electrical characteristics measured with Philips backend DSP SAF7730 and antenna dummy keyed AGC A 0.4 1.4 V SDA and SCL HIGH and LOW levels are specified according to a 3.3V serial bus. The bus pins also tolerate thresholds of a 5 V bus. 10.7 MHz 1.4 V 500 1.2 mA 1.2 mA 500 -0.3 2 1 5.3 V V MT1467 AM/FM Antenna Main AM/FM Tuner Sub FM Tuner FM Antenna EEPROM PLL PLL EEPROM keyed AGC Power Supply I2C Bus Interface I 2C Bus Interface Power Supply * Open collector output with maximum sink current; no internal pull up resistor 8.5/5V SCL SDA IF Out 8.5/5V DIMENSIONS* PARAMETER Length Width Heigth MT1467 BlockDSP Car Diagram MEASUREMENT 88 48 13 UNIT mm mm mm (e.g. Philips SAF7730) *All inputs/outputs via pins; number of pins is 2x16; pin grid is 2.54 mm MT1467 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 office locations, 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, ClearTune, 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: 5,625,325; 5,648,744; 5,717,730; 5,737,035; 5,739,730; 5,805,988; 5,847,612; 6,100,761; 6,104,242; 6,163,684; 6,169,569; 6,172,378; 6,177,964; 6,211,745; 6,218,899; 6,268,778; 6,310,387; 6,323,736; 6,355,537; 6,429,502; 6,462,327; 6,535,068; 6,580,313; 6,608,522; 6,631,257; 6,714,776; 6,725,463; 6,744,308; 6,771,124; 6,784,945; 6,804,099; 6,888,406; 6,891,435; 6,906,594; 6,909,886; 6,919,774; 6,920,182; 6,922,556; 6,963,478; 6,973,288; 6,993,310; 7,035,614; 7,078,960; 7,079,195; 7,164,899; 7,171,176; D469,742 and additional patents pending or filed. Entire contents Copyright (c) 1996 - 2007 Microtune, Inc. 013007 MT1467 PB-00143 -- Rev 1.0 February 2007 |
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