Atmel ATR4262M1 User Manual

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NOTE: This is a summary document.
The complete document is available
under NDA. For more information,
please contact your local Atmel sales
office.
Features
World Tuner Application Due to Integrated VCO Dividers
RF Input for Weather Band Applications
AM Reception 100 kHz Up to 30 MHz
AM Up/Down Conversion Depending on Reception Frequency
VCO Slave Mode for Phase Diversity Applications
FM Image Rejection Mixer
Selectable High-side/Low-side Injection for FM Mode
Selectable FM Mixer Output
RF-AGC Wideband Threshold Programmable for AM and FM
RF-AGC Inband Threshold Programmable
Cascode Control Voltage for AM FET Pre-stage
Integrated Pin-diode Drivers for AM and FM
Three Selectable IF Amplifier Inputs
Fractional PLL with Fast Lock Time
Small Frequency Steps for AM
Excellent SNR for DRM Applications
Differential Reference Frequency Input for PLL Down to 9 kHz or Integrated XCO Driver
Available
Two Wire Interface (TWI) with Two Selectable Bus Addresses
Digital Electronic Alignment of Up to Two External Filter Stages
Flexible and Economic IF Filter Concept
Control Inputs for IF Gain, Reception Frequency and Keyed AGC
Integrated State-machine for Optional Control of Alternative Frequency Check
Only One Power Supply Voltage Necessary
1. 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
ATR4262M1
Summary
Preliminary
4994BS–AUDR–05/08
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Summary of Contents

Page 1 - 1. Description

NOTE: This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office. Fe

Page 2

104994BS–AUDR–05/08ATR4262M1 [Preliminary] 12. Package Information11. Ordering InformationExtended Type Number Package RemarksATR4262M1-PLQW QFN48 - 7

Page 3

114994BS–AUDR–05/08ATR4262M1 [Preliminary]13. Revision HistoryPlease note that the following page numbers referred to in this section refer to the spe

Page 4

4994BS–AUDR–05/08Headquarters InternationalAtmel Corporation2325 Orchard ParkwaySan Jose, CA 95131USATel: 1(408) 441-0311Fax: 1(408) 487-2600Atmel Asi

Page 5

24994BS–AUDR–05/08ATR4262M1 [Preliminary] 2. Pin ConfigurationFigure 2-1. Pinning QFN48 AMIN1AMIN2AMCVCAMPINDSW1FMPINDFMIN1FMIN12FMIN2DAC1DAC2SW2SW3IF

Page 6

34994BS–AUDR–05/08ATR4262M1 [Preliminary]20 AFCC AFC control input/SW6 switching output/lock detect/AFHOLD21 VRVCO Reference voltage VCO22 VCOB VCO re

Page 7

44994BS–AUDR–05/08ATR4262M1 [Preliminary] 3. Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent

Page 8

54994BS–AUDR–05/08ATR4262M1 [Preliminary]6. Functional DescriptionThe ATR4262M1 front end is designed for world-tuner applications. Due to its flexibl

Page 9

64994BS–AUDR–05/08ATR4262M1 [Preliminary] • Alternative frequency checkAn optional state machine can control the alternative frequency check sequence

Page 10 - ATR4262M1 [Preliminary]

74994BS–AUDR–05/08ATR4262M1 [Preliminary]7. VCO and AM Prescaler SettingsTable 7-1 gives an example of the VCO divider and AM Prescaler settings and t

Page 11

84994BS–AUDR–05/08ATR4262M1 [Preliminary] 9. IF Filter Stage ConceptThere are several different IF filter concepts possible depending on the broadcast

Page 12 - Product Contact

94994BS–AUDR–05/08ATR4262M1 [Preliminary]10. Double Tuner ApplicationFigure 10-1. Double Tuner Operation 10.1 Two-Wire Interface-Bus Address ModesTo a

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