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Anleitung Zusammenfassung
. Description The ATR4262M1 is a single-chip AM/FM and weather band tuner dedicated for digital IF solutions in car-radio applications. ATR4262M1 is produced using Atmel®’s advanced BICMOS2S technology and fulfills the automotive requirements. This part is suitable for HD Radio™ reception as well as for DRM solutions. The high flexibility allows to design high performance and cost optimized tuner solutions. Broadcast Radio Front-end IC for AM/FM/DRM/HD Radio NOTE: This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office. ATR4262M1 Summary Preliminary 4994BS–AUDR–05/08 2. 2. Figure 2-1. Pinning QFN48 AMIN1 AMIN2 AMCVC AMPIND SW1 FMPIND FMIN1 FMIN12 FMIN2 DAC1 DAC2 SW2 AMOUT1AMOUT2AMAGCTC1FMOUT1FMOUT2VSTIFIN1IFREFIFIN2VRTIFIN3AMAGCT2 FMAGCTCKAGCIFGCLIFGCMENABLESDASCLAFCCVRVCOVCOBVCOEGNDVCO 48 47 46 45 44 43 42 41 40 39 38 37 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 ATR4262M1 SW3 IFOUT1 IFOUT2 VSPLL REF1 REF2 VRPLL AMLF FMLF VTUNE GNDPLL VCOBUF Table 2-1. Pin Description Pin Symbol Function 1 AMIN1 AM mixer input 2 AMIN2 AM mixer input 3 AMCVC AM cascode voltage output 4 AMPIND AM pin diode output 5 SW1 SW1 switching output 6 FMPIND FM pin diode output 7 FMIN1 FM mixer input 1 8 FMIN12 FM mixer input 12 9 FMIN2 FM mixer input 2 10 DAC1 DAC tuning voltage output 1 11 DAC2 DAC tuning voltage output 2 12 SW2 SW2 switching output/external tuning voltage input 13 FMAGCTC RF AGC FM time constant 14 KAGC Keyed AGC input/SW7/lock detect/AFSAMPLE 15 IFGCL IF gain control LSB/SW4 16 IFGCM IF gain control MSB/SW5 17 ENABLE Control bus ENABLE/address select 18 SDA Two-wire control bus SDA 19 SCL Two-wire control bus SCL 2 ATR4262M1 [Preliminary] 4994BS–AUDR–05/08 ATR4262M1 [Preliminary] ATR4262M1 [Preliminary] Pin Symbol Function 20 AFCC AFC control input/SW6 switching output/lock detect/AFHOLD 21 VRVCO Reference voltage VCO 22 VCOB VCO resonator (base) 23 VCOE VCO resonator (emitter) 24 GNDVCO VCO ground 25 VCOBUF VCO buffer output/input 26 GNDPLL PLL ground 27 VTUNE Tuning voltage output 28 FMLF PLL loopfilter FM 29 AMLF PLL loopfilter AM 30 VRPLL Reference voltage digital 31 REF2 RefClockInput2/crystal oscillator 32 REF1 RefClockInput1/crystal oscillator 33 VSPLL Supply voltage digital input 34 IFOUT2 IF output 2 35 IFOUT1 IF output 1 36 SW3 SW3 switching output/lock detect/AFSAMPLE 37 AMAGCTC2 RF AGC AM time constant 2 38 IFIN3 IF amplifier input 39 VRT Reference voltage tuner 40 IFIN2 IF amplifier input 41 IFREF IF reference voltage 42 IFIN1 IF amplifier input 43 VST Supply voltage tuner 44 FMOUT2 FM mixer output 45 FMOUT1 FM mixer output 46 AMAGCTC1 RF AGC AM time constant 1 47 AMOUT2 AM mixer output/FM Mixer Output 4 48 AMOUT1 AM mixer output/FM Mixer Output 3 Die pad GNDT_PAD Tuner RF and IF Ground 4994BS–AUDR–05/08 Absolute Maximum Ratings Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Parameters Pin Group Min. Max. Unit Voltage Digital –0.5 +5.5 V Supply –0.5 +12 V Voltage references –0.5 +6.4 V SW1, SW3 –0.5 +12 V SW2 –0.5 VS + 0.5 V SW4, SW5, SW6, SW7 –0.5 + 5.5 V Mixer outputs –0.5 +16 V Analog –0.5 VS + 0.5 V Current Switches 0 2.7 mA Ambient temperature Tamb –40 +100 °C Storage temperature Tstg –40 +100 °C Junction temperature Tj +150 °C Power dissipation Ptot 1.4 W ESD HBM All pins –2 +2 kV ESD MM All pins –200 +200 V 4. Thermal Resistance Parameters Test Condition Symbol Value Unit Thermal resistance junction-ambient Soldered to PCB RthJA 30 K/W 5. Operating Range Parameters Symbol Value Unit Supply voltage VS 8 to 10 V Supply voltage for operation of control bus (data preservation in bus registers is guaranteed) VS 7 to 10 V Ambient temperature Tamb –40 to +90 °C 4 ATR4262M1 [Preliminary] 4994BS–AUDR–05/08 ATR4262M1 [Preliminary] 6. Functional Description The ATR4262M1 front end is designed for world-tuner applications. Due to its flexible divider arrangement, the tuner can be used for reception from 100 kHz to 163 MHz. The field of use covers all the common radio broadcast services from AM-LW to AM-SW (up to 30 MHz) and from FM-OIRT to US weatherband. The tuner application can be easily adapted to the requirements of DRM and HD-radio (IBOC). • FM section The ATR4262M1 contains a high performance FM image rejection mixer, which helps to reduce the demands and the cost of the front end application. The FM mixer output can be switched to an alternative pair of pins to allow different IF filter concepts for FM mode. Two selectable inputs can be used for independent FM front end sections. • AM section The AM section contains a de...