Atmel ATR4262M1 - Manual

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