ATR2731-ILQY datasheet(1/26 Pages) ATMEL

Part #	ATR2731-ILQY

Description	DAB One-chip Front End

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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Features

• 8.5V Supply Voltage

• Voltage Regulator for Stable Operating Conditions

• Microprocessor-controlled Via a Simple Two-wire Bus

• Two Selectable Addresses

• Gain-controlled RF Amplifier with Two Inputs, Selectable Via a Simple Two-wire Bus

Control

• Balanced RF Amplifier Inputs

• Gain-controlled RF Mixer

• Four-pin Voltage-controlled Oscillator

• SAW Filter Driver With Differential Low-impedance Output

• AGC Voltage Generation for RF Section, Available at Charge-pump Output (Can Also

Be Used to Control a PIN Diode Attenuator)

• Gain-controlled IF Amplifier

• Balanced IF Amplifier Inputs

• Selectable Gain-controlled IF Mixer

• Single-ended IF Output

• AGC Voltage Generation for IF Section, Available at Charge-pump Output

• Separate Differential Input for the IF AGC Block

• All AGC Time Constants are Adjustable

• AGC Thresholds Programmable Via a Simple Two-wire Bus

• Three AGC Charge Pump Currents Selectable (Zero, Low, High)

• Reference Oscillator

• Programmable 9-bit Reference Divider

• Programmable 15-bit Counter 1:2048 to 1:32767 Effectively

• Tri-state Phase Detector with Programmable Charge Pump

• Superior Phase-noise Performance

• Programmable Deactivation of Tuning Output

• Three Switching Outputs (Open Collector)

• Three D/A Converters (Resolution: 8 Bits)

• Lock Status Indication (Open Collector)

DAB One-chip

Front End

ATR2731

Rev. 4904A–DAB–03/06

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ATR2731-ILQY Datasheet(PDF) 1 Page - ATMEL Corporation

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